./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 0e0057cc 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_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/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_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-24 23:16:16,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:16,113 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-24 23:16:16,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:16,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:16,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:16,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:16,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:16,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:16,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:16,175 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:16,175 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:16,176 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:16,177 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:16,177 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:16,178 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:16,178 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:16,179 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:16,180 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:16,180 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:16,181 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:16,182 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:16,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:16,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:16,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:16,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:16,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:16,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:16,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:16,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:16,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:16,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:16,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:16,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:16,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:16,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:16,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:16,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:16:16,196 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:16,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:16,197 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:16,197 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:16:16,198 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:16,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:16,198 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_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19d158b21d92d4655e874a970c31120f676a50dd3149e2b62ecc8e8738919e4f [2023-11-24 23:16:16,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:16,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:16,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:16,564 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:16,564 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:16,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i [2023-11-24 23:16:19,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:20,664 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:20,665 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i [2023-11-24 23:16:20,717 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/data/3238f9492/3a90e1093b394d3e89b750f6c27edb07/FLAG64f1e5a69 [2023-11-24 23:16:20,738 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/data/3238f9492/3a90e1093b394d3e89b750f6c27edb07 [2023-11-24 23:16:20,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:20,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:20,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:20,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:20,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:20,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3945ee6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:20, skipping insertion in model container [2023-11-24 23:16:20,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:20" (1/1) ... [2023-11-24 23:16:20,975 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:21,366 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4490,4503] [2023-11-24 23:16:21,377 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_21cd9be7-1b85-4710-9372-e1f702b3801a/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4550,4563] [2023-11-24 23:16:22,872 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:22,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:22,874 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:22,875 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:22,877 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:22,902 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:22,903 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:22,906 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:22,908 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:23,618 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:16:23,619 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:16:23,621 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:16:23,628 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:16:23,636 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:16:23,639 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:16:23,640 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:16:23,642 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:16:23,645 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:16:23,649 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:16:23,958 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:23,959 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:24,131 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:24,148 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_21cd9be7-1b85-4710-9372-e1f702b3801a/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4490,4503] [2023-11-24 23:16:24,149 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_21cd9be7-1b85-4710-9372-e1f702b3801a/sv-benchmarks/c/aws-c-common/aws_byte_buf_cat_harness.i[4550,4563] [2023-11-24 23:16:24,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,200 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,201 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,202 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,202 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,242 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-24 23:16:24,243 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-24 23:16:24,244 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-24 23:16:24,245 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-24 23:16:24,246 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-24 23:16:24,247 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-24 23:16:24,247 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-24 23:16:24,248 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-24 23:16:24,249 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-24 23:16:24,249 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-24 23:16:24,363 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-24 23:16:24,365 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,366 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-24 23:16:24,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-24 23:16:24,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:24,803 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,803 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,804 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,805 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,805 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,806 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,806 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,806 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,806 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,807 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,807 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,807 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,808 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,808 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,809 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,809 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,809 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,809 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:24,817 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:24,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24 WrapperNode [2023-11-24 23:16:24,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:24,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:24,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:24,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:24,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:24,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,041 INFO L138 Inliner]: procedures = 690, calls = 2731, calls flagged for inlining = 59, calls inlined = 8, statements flattened = 1083 [2023-11-24 23:16:25,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:25,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:25,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:25,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:25,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:25,182 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:25,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:25,183 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:25,184 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (1/1) ... [2023-11-24 23:16:25,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:25,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:25,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:25,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cd9be7-1b85-4710-9372-e1f702b3801a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-24 23:16:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-24 23:16:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-24 23:16:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-24 23:16:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:16:25,279 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-24 23:16:25,279 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-24 23:16:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-24 23:16:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:16:25,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:16:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:16:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-24 23:16:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-24 23:16:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-24 23:16:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-24 23:16:25,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:16:25,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:16:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:16:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-24 23:16:25,282 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-24 23:16:25,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:16:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-24 23:16:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-24 23:16:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-24 23:16:25,283 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-24 23:16:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-24 23:16:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-24 23:16:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:16:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:16:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-24 23:16:25,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-24 23:16:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:16:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:16:25,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:16:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-24 23:16:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-24 23:16:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-24 23:16:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-24 23:16:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:16:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-24 23:16:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-24 23:16:25,287 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-24 23:16:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:16:25,674 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:25,680 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:27,317 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:27,773 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:27,773 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:16:27,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:27 BoogieIcfgContainer [2023-11-24 23:16:27,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:27,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:27,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:27,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:27,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:20" (1/3) ... [2023-11-24 23:16:27,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fadd1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:27, skipping insertion in model container [2023-11-24 23:16:27,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:24" (2/3) ... [2023-11-24 23:16:27,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fadd1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:27, skipping insertion in model container [2023-11-24 23:16:27,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:27" (3/3) ... [2023-11-24 23:16:27,791 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_cat_harness.i [2023-11-24 23:16:27,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:27,816 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 23:16:27,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:27,921 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;@28b433a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:27,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 23:16:27,927 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) [2023-11-24 23:16:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-24 23:16:27,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:27,955 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] [2023-11-24 23:16:27,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:16:27,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1288502317, now seen corresponding path program 1 times [2023-11-24 23:16:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:27,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832913714] [2023-11-24 23:16:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:27,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-11-24 23:16:31,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:31,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832913714] [2023-11-24 23:16:31,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832913714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:31,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:16:31,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186660135] [2023-11-24 23:16:31,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:31,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:16:31,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:16:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:31,941 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) [2023-11-24 23:16:32,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:34,072 INFO L93 Difference]: Finished difference Result 313 states and 486 transitions. [2023-11-24 23:16:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:16:34,075 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 [2023-11-24 23:16:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:34,090 INFO L225 Difference]: With dead ends: 313 [2023-11-24 23:16:34,091 INFO L226 Difference]: Without dead ends: 206 [2023-11-24 23:16:34,099 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 [2023-11-24 23:16:34,107 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 120 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:34,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 526 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-24 23:16:34,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-24 23:16:34,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 166. [2023-11-24 23:16:34,193 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) [2023-11-24 23:16:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 235 transitions. [2023-11-24 23:16:34,198 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 235 transitions. Word has length 153 [2023-11-24 23:16:34,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:34,200 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 235 transitions. [2023-11-24 23:16:34,200 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) [2023-11-24 23:16:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 235 transitions. [2023-11-24 23:16:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-24 23:16:34,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:34,205 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] [2023-11-24 23:16:34,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:16:34,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 23:16:34,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:34,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1986659478, now seen corresponding path program 1 times [2023-11-24 23:16:34,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:34,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317230763] [2023-11-24 23:16:34,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:34,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat