./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/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_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/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_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/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 19d158b21d92d4655e874a970c31120f676a50dd3149e2b62ecc8e8738919e4f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:50:52,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:50:52,866 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:50:52,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:50:52,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:50:52,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:50:52,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:50:52,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:50:52,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:50:52,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:50:52,929 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:50:52,930 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:50:52,931 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:50:52,932 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:50:52,933 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:50:52,933 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:50:52,934 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:50:52,934 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:50:52,935 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:50:52,935 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:50:52,937 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:50:52,938 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:50:52,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:50:52,940 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:50:52,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:50:52,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:50:52,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:50:52,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:50:52,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:50:52,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:50:52,944 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:50:52,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:50:52,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:50:52,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:50:52,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:50:52,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:50:52,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:50:52,946 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:50:52,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:50:52,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:50:52,946 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:50:52,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:50:52,947 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_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19d158b21d92d4655e874a970c31120f676a50dd3149e2b62ecc8e8738919e4f [2023-11-12 00:50:53,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:50:53,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:50:53,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:50:53,314 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:50:53,314 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:50:53,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i [2023-11-12 00:50:56,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:50:57,328 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:50:57,329 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i [2023-11-12 00:50:57,373 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/data/ec9d97008/c7d7213b6de54b6bba88798e4df6c676/FLAGad37c7ab9 [2023-11-12 00:50:57,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/data/ec9d97008/c7d7213b6de54b6bba88798e4df6c676 [2023-11-12 00:50:57,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:50:57,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:50:57,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:50:57,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:50:57,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:50:57,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:57" (1/1) ... [2023-11-12 00:50:57,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6ecfd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:50:57, skipping insertion in model container [2023-11-12 00:50:57,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:50:57" (1/1) ... [2023-11-12 00:50:57,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:50:57,820 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_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4490,4503] [2023-11-12 00:50:57,830 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_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4550,4563] [2023-11-12 00:50:59,023 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,024 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,025 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,026 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,028 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,050 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,051 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,054 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,055 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,656 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:50:59,657 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:50:59,658 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:50:59,660 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:50:59,662 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:50:59,663 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:50:59,663 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:50:59,664 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:50:59,665 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:50:59,666 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:50:59,939 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:50:59,940 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:51:00,055 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:51:00,071 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_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4490,4503] [2023-11-12 00:51:00,072 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_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4550,4563] [2023-11-12 00:51:00,132 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,133 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,133 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,134 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,135 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,148 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,149 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,152 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,153 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,206 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:51:00,206 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:51:00,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:51:00,208 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:51:00,209 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:51:00,209 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:51:00,210 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:51:00,210 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:51:00,211 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:51:00,211 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:51:00,368 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-12 00:51:00,370 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,372 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:51:00,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-12 00:51:00,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:51:00,766 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,767 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,767 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,767 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,768 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,768 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,769 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,770 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,770 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,770 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,770 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,771 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,771 WARN L672 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,772 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,772 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,773 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,773 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,773 WARN L672 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:51:00,782 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:51:00,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00 WrapperNode [2023-11-12 00:51:00,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:51:00,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:51:00,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:51:00,785 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:51:00,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:00,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,074 INFO L138 Inliner]: procedures = 690, calls = 2731, calls flagged for inlining = 59, calls inlined = 8, statements flattened = 1083 [2023-11-12 00:51:01,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:51:01,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:51:01,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:51:01,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:51:01,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,109 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:51:01,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:51:01,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:51:01,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:51:01,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (1/1) ... [2023-11-12 00:51:01,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:51:01,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:51:01,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:51:01,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5145df3-9064-4ae4-87e7-c8b55fbcbdd9/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:51:01,353 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-12 00:51:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-12 00:51:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-12 00:51:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-12 00:51:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:51:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:51:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:51:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-12 00:51:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:51:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:51:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:51:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:51:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:51:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:51:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:51:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:51:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:51:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:51:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:51:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-12 00:51:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-12 00:51:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:51:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-12 00:51:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-12 00:51:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:51:01,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:51:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:51:01,361 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:51:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-12 00:51:01,361 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-12 00:51:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:51:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:51:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:51:01,362 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:51:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:51:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:51:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:51:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:51:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:51:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-12 00:51:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-12 00:51:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:51:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-12 00:51:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-12 00:51:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-12 00:51:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:51:01,716 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:51:01,719 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:51:03,533 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:51:03,899 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:51:03,899 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:51:03,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:51:03 BoogieIcfgContainer [2023-11-12 00:51:03,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:51:03,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:51:03,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:51:03,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:51:03,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:50:57" (1/3) ... [2023-11-12 00:51:03,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3489b2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:51:03, skipping insertion in model container [2023-11-12 00:51:03,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:51:00" (2/3) ... [2023-11-12 00:51:03,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3489b2c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:51:03, skipping insertion in model container [2023-11-12 00:51:03,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:51:03" (3/3) ... [2023-11-12 00:51:03,913 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_cat_harness.i [2023-11-12 00:51:03,936 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:51:03,936 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:51:04,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:51:04,007 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;@2779423e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:51:04,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:51:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 80 states have internal predecessors, (93), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-12 00:51:04,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-12 00:51:04,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:51:04,034 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:51:04,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:51:04,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:51:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1770760034, now seen corresponding path program 1 times [2023-11-12 00:51:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:51:04,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373061269] [2023-11-12 00:51:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:04,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:51:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:51:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-11-12 00:51:08,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:51:08,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373061269] [2023-11-12 00:51:08,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373061269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:51:08,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:51:08,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 00:51:08,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765518287] [2023-11-12 00:51:08,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:51:08,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:51:08,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:51:08,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:51:08,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:51:08,280 INFO L87 Difference]: Start difference. First operand has 167 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 80 states have internal predecessors, (93), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-12 00:51:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:51:09,330 INFO L93 Difference]: Finished difference Result 313 states and 486 transitions. [2023-11-12 00:51:09,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:51:09,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 153 [2023-11-12 00:51:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:51:09,391 INFO L225 Difference]: With dead ends: 313 [2023-11-12 00:51:09,391 INFO L226 Difference]: Without dead ends: 206 [2023-11-12 00:51:09,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:51:09,408 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 120 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:51:09,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 526 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:51:09,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-12 00:51:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 166. [2023-11-12 00:51:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 80 states have internal predecessors, (92), 72 states have call successors, (72), 14 states have call predecessors, (72), 14 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-12 00:51:09,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 235 transitions. [2023-11-12 00:51:09,507 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 235 transitions. Word has length 153 [2023-11-12 00:51:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:51:09,510 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 235 transitions. [2023-11-12 00:51:09,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2023-11-12 00:51:09,511 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 235 transitions. [2023-11-12 00:51:09,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-12 00:51:09,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:51:09,525 INFO L195 NwaCegarLoop]: trace histogram [13, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:51:09,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:51:09,526 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:51:09,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:51:09,526 INFO L85 PathProgramCache]: Analyzing trace with hash -747892185, now seen corresponding path program 1 times [2023-11-12 00:51:09,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:51:09,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002221625] [2023-11-12 00:51:09,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:51:09,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:51:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat