./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:50:44,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:50:44,360 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:50:44,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:50:44,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:50:44,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:50:44,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:50:44,409 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:50:44,410 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:50:44,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:50:44,411 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:50:44,413 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:50:44,413 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:50:44,417 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:50:44,418 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:50:44,419 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:50:44,419 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:50:44,420 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:50:44,420 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:50:44,422 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:50:44,423 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:50:44,423 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:50:44,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:50:44,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:50:44,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:50:44,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:50:44,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:50:44,426 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:50:44,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:50:44,427 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:50:44,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:50:44,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:50:44,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:50:44,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:44,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:50:44,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:50:44,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:50:44,443 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:50:44,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:50:44,443 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:50:44,444 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:50:44,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:50:44,444 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2023-11-12 00:50:44,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:50:44,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:50:44,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:50:44,753 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:50:44,754 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:50:44,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2023-11-12 00:50:47,871 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:50:48,444 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:50:48,446 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2023-11-12 00:50:48,498 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/data/f8f7e2316/d5591564be7b4d2fb8d476b562e348aa/FLAG314d08d51 [2023-11-12 00:50:48,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/data/f8f7e2316/d5591564be7b4d2fb8d476b562e348aa [2023-11-12 00:50:48,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:50:48,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:50:48,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:48,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:50:48,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:50:48,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:48" (1/1) ... [2023-11-12 00:50:48,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c52796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:48, skipping insertion in model container [2023-11-12 00:50:48,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:48" (1/1) ... [2023-11-12 00:50:48,677 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:50:49,008 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_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2023-11-12 00:50:49,017 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_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2023-11-12 00:50:50,196 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:50,197 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:50,198 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:50,206 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:50,207 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:50,223 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:50,224 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:50,226 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:50,227 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:50,768 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:50:50,770 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:50:50,771 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:50:50,773 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:50:50,775 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:50:50,776 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:50:50,777 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:50:50,778 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:50:50,779 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:50:50,780 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:50:51,256 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,257 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:51,414 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:50:51,442 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_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2023-11-12 00:50:51,444 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_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2023-11-12 00:50:51,503 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,503 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,504 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,504 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,506 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,519 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,520 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,524 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,525 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,585 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:50:51,586 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:50:51,587 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:50:51,588 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:50:51,589 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:50:51,589 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:50:51,594 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:50:51,595 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:50:51,596 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:50:51,596 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:50:51,720 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-12 00:50:51,722 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,724 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:51,739 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-12 00:50:51,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:50:52,059 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,059 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,059 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,059 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,060 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,060 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,061 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,061 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,061 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,062 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,062 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,063 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,063 WARN L672 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,063 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,064 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,064 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,065 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,065 WARN L672 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:50:52,073 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:50:52,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52 WrapperNode [2023-11-12 00:50:52,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:52,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:52,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:50:52,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:50:52,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,331 INFO L138 Inliner]: procedures = 689, calls = 2618, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 765 [2023-11-12 00:50:52,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:50:52,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:50:52,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:50:52,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:50:52,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,403 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,421 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:50:52,441 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:50:52,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:50:52,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:50:52,442 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (1/1) ... [2023-11-12 00:50:52,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:52,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:52,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:50:52,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:50:52,508 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-12 00:50:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-12 00:50:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:50:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:50:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:50:52,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:50:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:50:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:50:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:50:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:50:52,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:50:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:50:52,512 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:50:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:50:52,512 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:50:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:50:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:50:52,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:50:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-12 00:50:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-12 00:50:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:50:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:50:52,513 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2023-11-12 00:50:52,513 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2023-11-12 00:50:52,902 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:50:52,904 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:50:54,533 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:50:54,797 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:50:54,798 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:50:54,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:54 BoogieIcfgContainer [2023-11-12 00:50:54,801 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:50:54,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:50:54,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:50:54,807 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:50:54,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:50:48" (1/3) ... [2023-11-12 00:50:54,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47923cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:54, skipping insertion in model container [2023-11-12 00:50:54,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:52" (2/3) ... [2023-11-12 00:50:54,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47923cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:50:54, skipping insertion in model container [2023-11-12 00:50:54,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:50:54" (3/3) ... [2023-11-12 00:50:54,810 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2023-11-12 00:50:54,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:50:54,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:50:54,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:50:54,887 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=FINITE_AUTOMATA, 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;@6a8054cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:50:54,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:50:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-12 00:50:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-12 00:50:54,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:54,901 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:54,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:54,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:54,909 INFO L85 PathProgramCache]: Analyzing trace with hash 542316544, now seen corresponding path program 1 times [2023-11-12 00:50:54,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:54,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725227542] [2023-11-12 00:50:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:51:06,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:51:06,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725227542] [2023-11-12 00:51:06,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725227542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:51:06,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:51:06,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 00:51:06,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65882858] [2023-11-12 00:51:06,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:51:06,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:51:06,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:51:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:51:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-12 00:51:06,619 INFO L87 Difference]: Start difference. First operand has 49 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 00:51:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:51:07,294 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2023-11-12 00:51:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 00:51:07,296 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2023-11-12 00:51:07,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:51:07,305 INFO L225 Difference]: With dead ends: 89 [2023-11-12 00:51:07,305 INFO L226 Difference]: Without dead ends: 49 [2023-11-12 00:51:07,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:51:07,313 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 24 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:51:07,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 442 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:51:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-12 00:51:07,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-12 00:51:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 00:51:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-11-12 00:51:07,362 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 22 [2023-11-12 00:51:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:51:07,363 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-11-12 00:51:07,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-12 00:51:07,364 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-11-12 00:51:07,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-12 00:51:07,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:51:07,367 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 00:51:07,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:51:07,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:51:07,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:51:07,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1013013087, now seen corresponding path program 1 times [2023-11-12 00:51:07,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:51:07,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901025647] [2023-11-12 00:51:07,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:07,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:51:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:51:18,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:51:18,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901025647] [2023-11-12 00:51:18,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901025647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:51:18,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574344157] [2023-11-12 00:51:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:18,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:51:18,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:51:18,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:51:18,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9c1d01c-4b0b-4a58-8b85-7945afb7fbe0/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:51:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:21,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-12 00:51:21,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:51:22,650 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2023-11-12 00:51:22,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-12 00:51:22,691 INFO L351 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 49 treesize of output 44 [2023-11-12 00:51:22,710 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 57 [2023-11-12 00:51:22,813 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 106 [2023-11-12 00:51:22,868 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 00:51:22,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 23