./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_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_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/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_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/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_dada42bb-44a4-4138-9120-99f4d94247e4/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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:33:16,228 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:33:16,386 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf
[2023-11-19 07:33:16,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:33:16,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:33:16,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:33:16,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:33:16,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:33:16,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:33:16,449 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:33:16,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:33:16,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:33:16,451 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:33:16,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:33:16,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:33:16,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:33:16,454 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:33:16,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:33:16,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:33:16,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:33:16,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:33:16,457 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:33:16,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:33:16,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:33:16,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:33:16,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:33:16,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:33:16,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:33:16,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:33:16,461 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:33:16,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:33:16,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:33:16,463 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:33:16,463 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:33:16,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:33:16,463 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:33:16,463 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_dada42bb-44a4-4138-9120-99f4d94247e4/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7
[2023-11-19 07:33:16,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:33:16,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:33:16,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:33:16,841 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:33:16,841 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:33:16,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i
[2023-11-19 07:33:19,970 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:33:20,607 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:33:20,608 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i
[2023-11-19 07:33:20,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/data/b137dcc54/45ca0e567aa04c5980ece29d7b316402/FLAG8e5db4280
[2023-11-19 07:33:20,683 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/data/b137dcc54/45ca0e567aa04c5980ece29d7b316402
[2023-11-19 07:33:20,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:33:20,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:33:20,694 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:33:20,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:33:20,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:33:20,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:20" (1/1) ...
[2023-11-19 07:33:20,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e7640fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:20, skipping insertion in model container
[2023-11-19 07:33:20,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:20" (1/1) ...
[2023-11-19 07:33:20,862 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:33:21,207 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_dada42bb-44a4-4138-9120-99f4d94247e4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506]
[2023-11-19 07:33:21,217 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_dada42bb-44a4-4138-9120-99f4d94247e4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566]
[2023-11-19 07:33:22,559 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:22,560 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:22,561 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:22,563 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:22,564 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:22,581 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:22,582 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:22,585 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:22,585 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,148 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n
[2023-11-19 07:33:23,150 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n
[2023-11-19 07:33:23,151 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n
[2023-11-19 07:33:23,152 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n
[2023-11-19 07:33:23,154 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add
[2023-11-19 07:33:23,156 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub
[2023-11-19 07:33:23,157 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or
[2023-11-19 07:33:23,158 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and
[2023-11-19 07:33:23,159 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor
[2023-11-19 07:33:23,160 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence
[2023-11-19 07:33:23,623 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,624 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,648 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:33:23,686 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:33:23,700 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_dada42bb-44a4-4138-9120-99f4d94247e4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506]
[2023-11-19 07:33:23,701 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_dada42bb-44a4-4138-9120-99f4d94247e4/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566]
[2023-11-19 07:33:23,737 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,738 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,738 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,739 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,740 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,748 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,749 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,750 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,751 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,785 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n
[2023-11-19 07:33:23,786 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n
[2023-11-19 07:33:23,787 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n
[2023-11-19 07:33:23,788 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n
[2023-11-19 07:33:23,790 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add
[2023-11-19 07:33:23,790 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub
[2023-11-19 07:33:23,791 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or
[2023-11-19 07:33:23,792 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and
[2023-11-19 07:33:23,792 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor
[2023-11-19 07:33:23,793 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence
[2023-11-19 07:33:23,885 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588]
[2023-11-19 07:33:23,887 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,888 WARN L1588 CHandler]: Possible shadowing of function index
[2023-11-19 07:33:23,903 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:33:24,298 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,299 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,299 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,301 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,301 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,302 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,302 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,302 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,302 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,302 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,302 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,303 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,303 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,304 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,304 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,304 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,304 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler.
[2023-11-19 07:33:24,312 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:33:24,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24 WrapperNode
[2023-11-19 07:33:24,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:33:24,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:33:24,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:33:24,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:33:24,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,577 INFO L138 Inliner]: procedures = 680, calls = 2274, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 390
[2023-11-19 07:33:24,577 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:33:24,578 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:33:24,578 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:33:24,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:33:24,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:33:24,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:33:24,689 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:33:24,689 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:33:24,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (1/1) ...
[2023-11-19 07:33:24,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:33:24,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:33:24,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:33:24,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:33:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str
[2023-11-19 07:33:24,788 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str
[2023-11-19 07:33:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid
[2023-11-19 07:33:24,788 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid
[2023-11-19 07:33:24,788 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length
[2023-11-19 07:33:24,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length
[2023-11-19 07:33:24,789 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool
[2023-11-19 07:33:24,789 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool
[2023-11-19 07:33:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:33:24,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2023-11-19 07:33:24,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2023-11-19 07:33:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2023-11-19 07:33:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:33:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2023-11-19 07:33:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:33:24,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:33:24,793 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc
[2023-11-19 07:33:24,794 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc
[2023-11-19 07:33:24,794 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-11-19 07:33:24,795 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-11-19 07:33:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2023-11-19 07:33:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator
[2023-11-19 07:33:24,795 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator
[2023-11-19 07:33:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t
[2023-11-19 07:33:24,795 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t
[2023-11-19 07:33:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:33:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:33:25,115 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:33:25,118 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:33:25,680 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:33:25,690 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:33:25,690 INFO L302 CfgBuilder]: Removed 1 assume(true) statements.
[2023-11-19 07:33:25,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:25 BoogieIcfgContainer
[2023-11-19 07:33:25,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:33:25,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:33:25,707 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:33:25,711 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:33:25,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:20" (1/3) ...
[2023-11-19 07:33:25,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c364e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:25, skipping insertion in model container
[2023-11-19 07:33:25,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:24" (2/3) ...
[2023-11-19 07:33:25,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c364e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:25, skipping insertion in model container
[2023-11-19 07:33:25,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:25" (3/3) ...
[2023-11-19 07:33:25,716 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_harness.i
[2023-11-19 07:33:25,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:33:25,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 07:33:25,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:33:25,800 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;@59e172ec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:33:25,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-11-19 07:33:25,806 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-11-19 07:33:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-11-19 07:33:25,817 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:33:25,818 INFO L195 NwaCegarLoop]: trace histogram [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]
[2023-11-19 07:33:25,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:33:25,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:33:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1676862830, now seen corresponding path program 1 times
[2023-11-19 07:33:25,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:33:25,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521477991]
[2023-11-19 07:33:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:33:25,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:33:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:33:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:33:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2023-11-19 07:33:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:26,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2023-11-19 07:33:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-11-19 07:33:26,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:33:26,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521477991]
[2023-11-19 07:33:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521477991] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:33:26,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:33:26,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:33:26,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795152616]
[2023-11-19 07:33:26,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:33:26,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-11-19 07:33:26,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:33:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-11-19 07:33:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-11-19 07:33:26,495 INFO L87 Difference]: Start difference. First operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-11-19 07:33:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:33:26,536 INFO L93 Difference]: Finished difference Result 205 states and 281 transitions.
[2023-11-19 07:33:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-11-19 07:33:26,541 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36
[2023-11-19 07:33:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:33:26,556 INFO L225 Difference]: With dead ends: 205
[2023-11-19 07:33:26,557 INFO L226 Difference]: Without dead ends: 101
[2023-11-19 07:33:26,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 07:33:26,575 INFO L413 NwaCegarLoop]: 136 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, 136 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 07:33:26,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:33:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-11-19 07:33:26,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2023-11-19 07:33:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2023-11-19 07:33:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions.
[2023-11-19 07:33:26,658 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 36
[2023-11-19 07:33:26,659 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:33:26,659 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions.
[2023-11-19 07:33:26,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2023-11-19 07:33:26,660 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions.
[2023-11-19 07:33:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2023-11-19 07:33:26,663 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:33:26,663 INFO L195 NwaCegarLoop]: trace histogram [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]
[2023-11-19 07:33:26,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:33:26,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:33:26,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:33:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash -12080912, now seen corresponding path program 1 times
[2023-11-19 07:33:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:33:26,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236777195]
[2023-11-19 07:33:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:33:26,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:33:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:33:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:33:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2023-11-19 07:33:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2023-11-19 07:33:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2023-11-19 07:33:27,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:33:27,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236777195]
[2023-11-19 07:33:27,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236777195] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:33:27,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:33:27,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-11-19 07:33:27,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882298053]
[2023-11-19 07:33:27,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:33:27,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:33:27,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:33:27,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:33:27,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-11-19 07:33:27,238 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2023-11-19 07:33:27,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:33:27,317 INFO L93 Difference]: Finished difference Result 148 states and 186 transitions.
[2023-11-19 07:33:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2023-11-19 07:33:27,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36
[2023-11-19 07:33:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:33:27,322 INFO L225 Difference]: With dead ends: 148
[2023-11-19 07:33:27,322 INFO L226 Difference]: Without dead ends: 101
[2023-11-19 07:33:27,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 07:33:27,325 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 6 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 07:33:27,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 374 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:33:27,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-11-19 07:33:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2023-11-19 07:33:27,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 66 states have internal predecessors, (76), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2023-11-19 07:33:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions.
[2023-11-19 07:33:27,351 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 36
[2023-11-19 07:33:27,352 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:33:27,352 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions.
[2023-11-19 07:33:27,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4)
[2023-11-19 07:33:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions.
[2023-11-19 07:33:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2023-11-19 07:33:27,355 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:33:27,356 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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]
[2023-11-19 07:33:27,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:33:27,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:33:27,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:33:27,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2108660913, now seen corresponding path program 1 times
[2023-11-19 07:33:27,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:33:27,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410617107]
[2023-11-19 07:33:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:33:27,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:33:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:33:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:33:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2023-11-19 07:33:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2023-11-19 07:33:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 07:33:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2023-11-19 07:33:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2023-11-19 07:33:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:27,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2023-11-19 07:33:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2023-11-19 07:33:28,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:33:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410617107]
[2023-11-19 07:33:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410617107] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:33:28,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:33:28,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-11-19 07:33:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210332055]
[2023-11-19 07:33:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:33:28,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-11-19 07:33:28,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:33:28,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-11-19 07:33:28,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-11-19 07:33:28,021 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9)
[2023-11-19 07:33:28,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:33:28,552 INFO L93 Difference]: Finished difference Result 138 states and 169 transitions.
[2023-11-19 07:33:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2023-11-19 07:33:28,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 64
[2023-11-19 07:33:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:33:28,556 INFO L225 Difference]: With dead ends: 138
[2023-11-19 07:33:28,556 INFO L226 Difference]: Without dead ends: 101
[2023-11-19 07:33:28,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132
[2023-11-19 07:33:28,558 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 65 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-11-19 07:33:28,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 449 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-11-19 07:33:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-11-19 07:33:28,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2023-11-19 07:33:28,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 66 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2023-11-19 07:33:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions.
[2023-11-19 07:33:28,574 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 64
[2023-11-19 07:33:28,575 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:33:28,575 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions.
[2023-11-19 07:33:28,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9)
[2023-11-19 07:33:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions.
[2023-11-19 07:33:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2023-11-19 07:33:28,578 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:33:28,579 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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]
[2023-11-19 07:33:28,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-11-19 07:33:28,579 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:33:28,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:33:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash -63104247, now seen corresponding path program 1 times
[2023-11-19 07:33:28,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:33:28,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979083313]
[2023-11-19 07:33:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:33:28,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:33:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:28,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:33:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:28,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2023-11-19 07:33:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2023-11-19 07:33:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2023-11-19 07:33:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 07:33:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2023-11-19 07:33:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43
[2023-11-19 07:33:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:29,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2023-11-19 07:33:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2023-11-19 07:33:29,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:33:29,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979083313]
[2023-11-19 07:33:29,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979083313] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:33:29,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:33:29,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-11-19 07:33:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352473416]
[2023-11-19 07:33:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:33:29,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-11-19 07:33:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:33:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-11-19 07:33:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:33:29,126 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2023-11-19 07:33:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:33:29,463 INFO L93 Difference]: Finished difference Result 159 states and 199 transitions.
[2023-11-19 07:33:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:33:29,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65
[2023-11-19 07:33:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:33:29,466 INFO L225 Difference]: With dead ends: 159
[2023-11-19 07:33:29,466 INFO L226 Difference]: Without dead ends: 101
[2023-11-19 07:33:29,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-11-19 07:33:29,468 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 43 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-11-19 07:33:29,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 244 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-11-19 07:33:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-11-19 07:33:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2023-11-19 07:33:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2023-11-19 07:33:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions.
[2023-11-19 07:33:29,481 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 65
[2023-11-19 07:33:29,482 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:33:29,482 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions.
[2023-11-19 07:33:29,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)
[2023-11-19 07:33:29,482 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions.
[2023-11-19 07:33:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2023-11-19 07:33:29,486 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:33:29,487 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:33:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:33:29,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:33:29,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:33:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1726009102, now seen corresponding path program 1 times
[2023-11-19 07:33:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:33:29,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747176267]
[2023-11-19 07:33:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:33:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:33:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:33:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2023-11-19 07:33:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 07:33:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2023-11-19 07:33:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 07:33:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2023-11-19 07:33:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2023-11-19 07:33:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2023-11-19 07:33:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2023-11-19 07:33:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2023-11-19 07:33:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2023-11-19 07:33:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87
[2023-11-19 07:33:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked.
[2023-11-19 07:33:30,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:33:30,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747176267]
[2023-11-19 07:33:30,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747176267] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:33:30,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:33:30,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2023-11-19 07:33:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635476752]
[2023-11-19 07:33:30,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:33:30,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2023-11-19 07:33:30,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:33:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2023-11-19 07:33:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272
[2023-11-19 07:33:30,877 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14)
[2023-11-19 07:33:31,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:33:31,787 INFO L93 Difference]: Finished difference Result 138 states and 167 transitions.
[2023-11-19 07:33:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2023-11-19 07:33:31,788 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) Word has length 99
[2023-11-19 07:33:31,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:33:31,790 INFO L225 Difference]: With dead ends: 138
[2023-11-19 07:33:31,790 INFO L226 Difference]: Without dead ends: 101
[2023-11-19 07:33:31,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506
[2023-11-19 07:33:31,792 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 68 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-11-19 07:33:31,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 703 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-11-19 07:33:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-11-19 07:33:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2023-11-19 07:33:31,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2023-11-19 07:33:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions.
[2023-11-19 07:33:31,806 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 99
[2023-11-19 07:33:31,807 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:33:31,807 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions.
[2023-11-19 07:33:31,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14)
[2023-11-19 07:33:31,807 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions.
[2023-11-19 07:33:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118
[2023-11-19 07:33:31,812 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:33:31,812 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:33:31,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:33:31,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:33:31,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:33:31,813 INFO L85 PathProgramCache]: Analyzing trace with hash -151358824, now seen corresponding path program 1 times
[2023-11-19 07:33:31,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:33:31,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333964676]
[2023-11-19 07:33:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:33:31,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:33:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:33:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2023-11-19 07:33:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 07:33:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2023-11-19 07:33:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 07:33:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2023-11-19 07:33:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2023-11-19 07:33:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2023-11-19 07:33:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2023-11-19 07:33:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2023-11-19 07:33:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2023-11-19 07:33:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85
[2023-11-19 07:33:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 07:33:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105
[2023-11-19 07:33:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked.
[2023-11-19 07:33:32,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:33:32,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333964676]
[2023-11-19 07:33:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333964676] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:33:32,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553980406]
[2023-11-19 07:33:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:33:32,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:33:32,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:33:32,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:33:32,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 07:33:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:33,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-11-19 07:33:33,072 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:33:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked.
[2023-11-19 07:33:33,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:33:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553980406] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:33:33,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 07:33:33,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15
[2023-11-19 07:33:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111097814]
[2023-11-19 07:33:33,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:33:33,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-11-19 07:33:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:33:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-11-19 07:33:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210
[2023-11-19 07:33:33,271 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17)
[2023-11-19 07:33:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-11-19 07:33:33,333 INFO L93 Difference]: Finished difference Result 155 states and 189 transitions.
[2023-11-19 07:33:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-11-19 07:33:33,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 117
[2023-11-19 07:33:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2023-11-19 07:33:33,340 INFO L225 Difference]: With dead ends: 155
[2023-11-19 07:33:33,340 INFO L226 Difference]: Without dead ends: 101
[2023-11-19 07:33:33,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240
[2023-11-19 07:33:33,344 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 2 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-11-19 07:33:33,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 356 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-11-19 07:33:33,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2023-11-19 07:33:33,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2023-11-19 07:33:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 66 states have internal predecessors, (72), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25)
[2023-11-19 07:33:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions.
[2023-11-19 07:33:33,364 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 117
[2023-11-19 07:33:33,365 INFO L84 Accepts]: Finished accepts. word is rejected.
[2023-11-19 07:33:33,365 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions.
[2023-11-19 07:33:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17)
[2023-11-19 07:33:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions.
[2023-11-19 07:33:33,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2023-11-19 07:33:33,374 INFO L187 NwaCegarLoop]: Found error trace
[2023-11-19 07:33:33,375 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:33:33,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 07:33:33,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-11-19 07:33:33,593 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-11-19 07:33:33,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:33:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1818490091, now seen corresponding path program 1 times
[2023-11-19 07:33:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:33:33,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144115983]
[2023-11-19 07:33:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:33:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:33:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:38,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2023-11-19 07:33:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:38,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2023-11-19 07:33:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 07:33:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2023-11-19 07:33:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23
[2023-11-19 07:33:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2023-11-19 07:33:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47
[2023-11-19 07:33:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52
[2023-11-19 07:33:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57
[2023-11-19 07:33:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68
[2023-11-19 07:33:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2023-11-19 07:33:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2023-11-19 07:33:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94
[2023-11-19 07:33:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1
[2023-11-19 07:33:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2023-11-19 07:33:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2023-11-19 07:33:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked.
[2023-11-19 07:33:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:33:41,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144115983]
[2023-11-19 07:33:41,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144115983] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:33:41,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996550060]
[2023-11-19 07:33:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:33:41,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:33:41,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:33:41,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:33:41,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dada42bb-44a4-4138-9120-99f4d94247e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 07:33:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:33:41,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 110 conjunts are in the unsatisfiable core
[2023-11-19 07:33:41,460 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:33:42,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 53
[2023-11-19 07:33:42,018 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:33:42,045 INFO L349 Elim1Store]: treesize reduction 13, result has 53.6 percent of original size
[2023-11-19 07:33:42,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 96
[2023-11-19 07:33:42,228 INFO L349 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size
[2023-11-19 07:33:42,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 134 treesize of output 73
[2023-11-19 07:33:58,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2023-11-19 07:33:58,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 445 treesize of output 417
[2023-11-19 07:33:58,525 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2023-11-19 07:33:58,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 55
[2023-11-19 07:33:58,681 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size
[2023-11-19 07:33:58,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 50
[2023-11-19 07:33:58,713 INFO L349 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size
[2023-11-19 07:33:58,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 86
[2023-11-19 07:33:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 23 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2023-11-19 07:33:58,828 INFO L327 TraceCheckSpWp]: Computing backward predicates...