./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx --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 c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:10:11,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:10:11,943 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:10:11,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:10:11,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:10:11,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:10:11,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:10:11,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:10:11,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:10:12,003 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:10:12,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:10:12,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:10:12,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:10:12,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:10:12,008 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:10:12,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:10:12,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:10:12,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:10:12,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:10:12,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:10:12,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:10:12,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:10:12,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:10:12,013 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:10:12,014 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:10:12,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:10:12,015 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:10:12,015 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:10:12,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:10:12,016 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:10:12,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:10:12,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:10:12,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:10:12,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:10:12,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:10:12,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:10:12,019 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:10:12,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:10:12,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:10:12,020 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_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 [2023-11-21 22:10:12,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:10:12,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:10:12,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:10:12,435 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:10:12,435 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:10:12,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2023-11-21 22:10:15,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:10:16,502 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:10:16,502 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2023-11-21 22:10:16,551 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/data/6136a8265/c815354474b1498492ffe39ffd12e29f/FLAGe27f578a7 [2023-11-21 22:10:16,569 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/data/6136a8265/c815354474b1498492ffe39ffd12e29f [2023-11-21 22:10:16,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:10:16,578 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:10:16,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:10:16,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:10:16,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:10:16,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:10:16" (1/1) ... [2023-11-21 22:10:16,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:16, skipping insertion in model container [2023-11-21 22:10:16,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:10:16" (1/1) ... [2023-11-21 22:10:16,688 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:10:17,031 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_3c81b0ec-c647-4757-821c-eac59083998f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4486,4499] [2023-11-21 22:10:17,042 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_3c81b0ec-c647-4757-821c-eac59083998f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4546,4559] [2023-11-21 22:10:18,304 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:18,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:18,306 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:18,307 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:18,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:18,344 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:18,349 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:18,352 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:18,355 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:19,232 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:10:19,234 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:10:19,236 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:10:19,242 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:10:19,250 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:10:19,251 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:10:19,252 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:10:19,255 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:10:19,258 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:10:19,261 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:10:19,761 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:19,762 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:19,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:10:19,991 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:10:20,009 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_3c81b0ec-c647-4757-821c-eac59083998f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4486,4499] [2023-11-21 22:10:20,010 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_3c81b0ec-c647-4757-821c-eac59083998f/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i[4546,4559] [2023-11-21 22:10:20,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,103 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,104 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,105 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,106 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,129 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,134 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,136 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,221 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-21 22:10:20,222 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-21 22:10:20,223 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-21 22:10:20,225 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-21 22:10:20,227 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-21 22:10:20,227 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-21 22:10:20,228 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-21 22:10:20,229 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-21 22:10:20,230 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-21 22:10:20,230 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-21 22:10:20,383 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-21 22:10:20,385 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,385 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-21 22:10:20,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-21 22:10:20,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:10:20,974 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,974 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,974 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,974 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,975 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,975 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,975 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,975 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,975 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,976 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,976 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,976 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,976 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,976 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,977 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,977 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,977 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,977 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:20,987 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:10:20,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20 WrapperNode [2023-11-21 22:10:20,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:10:20,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:10:20,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:10:20,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:10:21,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,160 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,397 INFO L138 Inliner]: procedures = 690, calls = 2619, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 792 [2023-11-21 22:10:21,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:10:21,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:10:21,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:10:21,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:10:21,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,444 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,569 INFO L187 HeapSplitter]: Split 512 memory accesses to 7 slices as follows [2, 5, 256, 236, 4, 6, 3] [2023-11-21 22:10:21,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,692 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:10:21,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:10:21,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:10:21,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:10:21,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (1/1) ... [2023-11-21 22:10:21,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:10:21,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:21,754 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:10:21,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:10:21,819 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-21 22:10:21,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:10:21,822 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-21 22:10:21,822 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-21 22:10:21,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:10:21,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:10:21,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:10:21,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:10:21,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 22:10:21,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 22:10:21,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 22:10:21,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:10:21,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:10:21,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:10:21,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:10:21,825 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-21 22:10:21,826 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-21 22:10:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:10:21,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:10:21,826 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-21 22:10:21,826 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-21 22:10:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-21 22:10:21,827 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-21 22:10:21,827 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-21 22:10:21,827 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-21 22:10:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:10:21,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:10:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:10:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-21 22:10:21,829 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-21 22:10:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 22:10:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 22:10:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-21 22:10:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-21 22:10:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-21 22:10:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-21 22:10:21,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-21 22:10:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-21 22:10:21,833 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-21 22:10:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:10:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:10:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:10:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:10:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:10:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 22:10:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 22:10:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:10:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:10:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:10:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:10:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:10:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:10:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:10:22,250 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:10:22,253 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:10:24,104 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:10:24,379 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:10:24,379 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:10:24,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:24 BoogieIcfgContainer [2023-11-21 22:10:24,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:10:24,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:10:24,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:10:24,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:10:24,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:10:16" (1/3) ... [2023-11-21 22:10:24,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0997af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:10:24, skipping insertion in model container [2023-11-21 22:10:24,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:20" (2/3) ... [2023-11-21 22:10:24,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0997af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:10:24, skipping insertion in model container [2023-11-21 22:10:24,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:24" (3/3) ... [2023-11-21 22:10:24,400 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness.i [2023-11-21 22:10:24,428 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:10:24,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:10:24,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:10:24,532 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;@430729f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:10:24,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:10:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 42 states have internal predecessors, (50), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-21 22:10:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-21 22:10:24,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:24,558 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-11-21 22:10:24,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:10:24,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1232639125, now seen corresponding path program 1 times [2023-11-21 22:10:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:24,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257505790] [2023-11-21 22:10:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:24,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:10:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:10:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:10:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:28,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:10:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-21 22:10:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 22:10:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 22:10:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:29,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:29,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:10:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 22:10:29,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:29,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257505790] [2023-11-21 22:10:29,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257505790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:10:29,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339808304] [2023-11-21 22:10:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:29,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:29,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:29,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:29,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:10:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:29,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-21 22:10:29,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:10:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 22:10:30,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:10:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 22:10:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339808304] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:10:30,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:10:30,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 7] total 20 [2023-11-21 22:10:30,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941345707] [2023-11-21 22:10:30,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:10:30,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 22:10:30,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:30,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 22:10:30,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:10:30,702 INFO L87 Difference]: Start difference. First operand has 74 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 42 states have internal predecessors, (50), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-21 22:10:33,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:33,422 INFO L93 Difference]: Finished difference Result 172 states and 269 transitions. [2023-11-21 22:10:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:10:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 50 [2023-11-21 22:10:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:33,435 INFO L225 Difference]: With dead ends: 172 [2023-11-21 22:10:33,435 INFO L226 Difference]: Without dead ends: 122 [2023-11-21 22:10:33,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2023-11-21 22:10:33,443 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 125 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:33,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 439 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 22:10:33,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-21 22:10:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2023-11-21 22:10:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 56 states have internal predecessors, (64), 39 states have call successors, (39), 10 states have call predecessors, (39), 11 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2023-11-21 22:10:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 144 transitions. [2023-11-21 22:10:33,524 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 144 transitions. Word has length 50 [2023-11-21 22:10:33,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:33,525 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 144 transitions. [2023-11-21 22:10:33,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-21 22:10:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 144 transitions. [2023-11-21 22:10:33,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-21 22:10:33,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:33,530 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 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] [2023-11-21 22:10:33,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 22:10:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-21 22:10:33,756 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:10:33,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 477661999, now seen corresponding path program 1 times [2023-11-21 22:10:33,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:33,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562490172] [2023-11-21 22:10:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:33,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:10:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:36,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:36,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:10:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:36,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 22:10:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:36,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-21 22:10:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:37,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-21 22:10:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:37,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:10:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 22:10:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-21 22:10:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 22:10:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:37,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:37,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:10:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-21 22:10:37,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:37,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562490172] [2023-11-21 22:10:37,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562490172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:10:37,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221327033] [2023-11-21 22:10:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:37,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:37,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:37,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:37,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:10:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:37,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 2554 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-21 22:10:37,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:10:38,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-21 22:10:38,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:10:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-21 22:10:39,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221327033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:10:39,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:10:39,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 24 [2023-11-21 22:10:39,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348754717] [2023-11-21 22:10:39,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:10:39,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:10:39,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:10:39,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:10:39,241 INFO L87 Difference]: Start difference. First operand 104 states and 144 transitions. Second operand has 24 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (22), 12 states have call predecessors, (22), 8 states have call successors, (22) [2023-11-21 22:10:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:42,519 INFO L93 Difference]: Finished difference Result 156 states and 220 transitions. [2023-11-21 22:10:42,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-21 22:10:42,521 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (22), 12 states have call predecessors, (22), 8 states have call successors, (22) Word has length 62 [2023-11-21 22:10:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:42,524 INFO L225 Difference]: With dead ends: 156 [2023-11-21 22:10:42,524 INFO L226 Difference]: Without dead ends: 122 [2023-11-21 22:10:42,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=1117, Unknown=0, NotChecked=0, Total=1260 [2023-11-21 22:10:42,527 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 108 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:42,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 635 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-21 22:10:42,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-21 22:10:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2023-11-21 22:10:42,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 56 states have internal predecessors, (64), 39 states have call successors, (39), 10 states have call predecessors, (39), 11 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-21 22:10:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 143 transitions. [2023-11-21 22:10:42,587 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 143 transitions. Word has length 62 [2023-11-21 22:10:42,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:42,588 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 143 transitions. [2023-11-21 22:10:42,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (22), 12 states have call predecessors, (22), 8 states have call successors, (22) [2023-11-21 22:10:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 143 transitions. [2023-11-21 22:10:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-21 22:10:42,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:42,592 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2023-11-21 22:10:42,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:10:42,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:42,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:10:42,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:42,797 INFO L85 PathProgramCache]: Analyzing trace with hash -608028524, now seen corresponding path program 1 times [2023-11-21 22:10:42,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:42,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414180785] [2023-11-21 22:10:42,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:10:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:10:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-21 22:10:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-21 22:10:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:10:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 22:10:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:46,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-21 22:10:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:47,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:10:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:47,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-21 22:10:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:10:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:47,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:10:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-21 22:10:47,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:47,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414180785] [2023-11-21 22:10:47,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414180785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:10:47,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632986535] [2023-11-21 22:10:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:47,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:47,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:47,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:47,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:10:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:48,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 2587 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-21 22:10:48,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:10:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 22:10:49,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:10:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-21 22:10:51,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632986535] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:10:51,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:10:51,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [23, 23] total 48 [2023-11-21 22:10:51,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577867437] [2023-11-21 22:10:51,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:10:51,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:10:51,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:51,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:10:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=2119, Unknown=0, NotChecked=0, Total=2256 [2023-11-21 22:10:51,032 INFO L87 Difference]: Start difference. First operand 104 states and 143 transitions. Second operand has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-21 22:10:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:10:51,348 INFO L93 Difference]: Finished difference Result 119 states and 161 transitions. [2023-11-21 22:10:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:10:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 70 [2023-11-21 22:10:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:10:51,351 INFO L225 Difference]: With dead ends: 119 [2023-11-21 22:10:51,352 INFO L226 Difference]: Without dead ends: 117 [2023-11-21 22:10:51,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=145, Invalid=2305, Unknown=0, NotChecked=0, Total=2450 [2023-11-21 22:10:51,355 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 23 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:10:51,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 493 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:10:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-21 22:10:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2023-11-21 22:10:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 59 states have internal predecessors, (67), 39 states have call successors, (39), 11 states have call predecessors, (39), 12 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-21 22:10:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 146 transitions. [2023-11-21 22:10:51,382 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 146 transitions. Word has length 70 [2023-11-21 22:10:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:10:51,383 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 146 transitions. [2023-11-21 22:10:51,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-21 22:10:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 146 transitions. [2023-11-21 22:10:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-21 22:10:51,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:51,386 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2023-11-21 22:10:51,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:10:51,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:51,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:10:51,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:51,601 INFO L85 PathProgramCache]: Analyzing trace with hash -726879984, now seen corresponding path program 1 times [2023-11-21 22:10:51,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:51,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904171884] [2023-11-21 22:10:51,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:51,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:10:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:10:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:52,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:10:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:52,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 22:10:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-21 22:10:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:10:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 22:10:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:53,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-21 22:10:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:53,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:10:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:10:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-21 22:10:53,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:10:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904171884] [2023-11-21 22:10:53,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904171884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:10:53,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515192001] [2023-11-21 22:10:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:53,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:10:53,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:53,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:10:53,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c81b0ec-c647-4757-821c-eac59083998f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:10:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:10:53,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 2582 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-21 22:10:53,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:10:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-21 22:10:54,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:10:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-21 22:10:55,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515192001] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:10:55,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:10:55,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 37 [2023-11-21 22:10:55,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506046366] [2023-11-21 22:10:55,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:10:55,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-21 22:10:55,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:10:55,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-21 22:10:55,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2023-11-21 22:10:55,205 INFO L87 Difference]: Start difference. First operand 108 states and 146 transitions. Second operand has 37 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 29 states have internal predecessors, (58), 12 states have call successors, (32), 5 states have call predecessors, (32), 10 states have return successors, (29), 15 states have call predecessors, (29), 11 states have call successors, (29)