./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --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 5b593bdfc14611b3d776fb71004c467935b0dea85b9c8fc41a7cd99c2774118a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:12:52,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:12:52,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:12:52,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:12:52,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:12:52,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:12:52,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:12:52,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:12:52,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:12:52,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:12:52,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:12:52,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:12:52,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:12:52,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:12:52,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:12:52,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:12:52,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:12:52,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:12:52,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:12:52,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:12:52,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:12:52,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:12:52,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:12:52,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:12:52,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:12:52,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:12:52,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:12:52,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:12:52,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:12:52,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:12:52,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:12:52,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:12:52,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:12:52,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:12:52,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:12:52,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:12:52,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:12:52,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:12:52,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:12:52,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:12:52,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:12:52,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 08:12:52,249 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:12:52,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:12:52,250 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:12:52,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:12:52,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:12:52,251 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:12:52,259 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:12:52,259 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:12:52,259 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:12:52,259 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:12:52,259 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:12:52,260 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:12:52,260 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:12:52,260 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:12:52,260 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:12:52,260 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:12:52,261 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:12:52,261 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:12:52,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:12:52,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:12:52,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:12:52,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:12:52,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:12:52,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:12:52,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:12:52,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:12:52,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:12:52,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:12:52,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:12:52,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:12:52,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:12:52,264 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:12:52,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:12:52,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:12:52,265 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:12:52,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:12:52,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:12:52,265 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:12:52,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b593bdfc14611b3d776fb71004c467935b0dea85b9c8fc41a7cd99c2774118a [2022-12-14 08:12:52,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:12:52,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:12:52,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:12:52,491 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:12:52,492 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:12:52,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2022-12-14 08:12:55,066 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:12:55,425 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:12:55,426 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i [2022-12-14 08:12:55,454 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/data/ee474ccc9/0934eb7726aa48b7b9c1e0ce02e4281c/FLAG849230c7d [2022-12-14 08:12:55,466 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/data/ee474ccc9/0934eb7726aa48b7b9c1e0ce02e4281c [2022-12-14 08:12:55,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:12:55,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:12:55,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:12:55,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:12:55,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:12:55,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:12:55" (1/1) ... [2022-12-14 08:12:55,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ace16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:55, skipping insertion in model container [2022-12-14 08:12:55,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:12:55" (1/1) ... [2022-12-14 08:12:55,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:12:55,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:12:55,741 WARN L237 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_2931f802-afb3-4864-be47-2b8f85b072be/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2022-12-14 08:12:55,746 WARN L237 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_2931f802-afb3-4864-be47-2b8f85b072be/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2022-12-14 08:12:56,377 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,396 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,403 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,404 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,404 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,405 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,406 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,419 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,428 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,429 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,431 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,432 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,486 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 08:12:56,486 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 08:12:56,487 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 08:12:56,490 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 08:12:56,492 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 08:12:56,492 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 08:12:56,610 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,736 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 08:12:56,737 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 08:12:56,738 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 08:12:56,739 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 08:12:56,740 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 08:12:56,741 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 08:12:56,741 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 08:12:56,742 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 08:12:56,742 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 08:12:56,743 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 08:12:56,743 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 08:12:56,862 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 08:12:56,873 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,874 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,882 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,885 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,886 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,887 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 08:12:56,899 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:12:56,927 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:12:56,935 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,936 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:56,947 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,972 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:56,991 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 08:12:56,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:12:57,039 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:12:57,053 WARN L237 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_2931f802-afb3-4864-be47-2b8f85b072be/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4502,4515] [2022-12-14 08:12:57,054 WARN L237 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_2931f802-afb3-4864-be47-2b8f85b072be/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness_negated.i[4562,4575] [2022-12-14 08:12:57,082 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,088 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,091 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,092 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,092 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,093 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,093 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,096 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,100 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,101 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,102 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,102 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,110 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 08:12:57,111 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 08:12:57,111 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 08:12:57,115 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 08:12:57,116 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 08:12:57,116 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 08:12:57,119 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,141 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 08:12:57,142 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 08:12:57,142 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 08:12:57,143 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 08:12:57,144 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 08:12:57,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 08:12:57,145 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 08:12:57,146 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 08:12:57,147 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 08:12:57,147 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 08:12:57,148 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 08:12:57,168 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 08:12:57,175 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,176 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,182 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,184 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,185 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,186 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 08:12:57,193 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:12:57,220 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 08:12:57,227 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,227 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 08:12:57,236 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,241 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 08:12:57,253 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 08:12:57,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:12:57,395 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:12:57,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57 WrapperNode [2022-12-14 08:12:57,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:12:57,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:12:57,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:12:57,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:12:57,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,521 INFO L138 Inliner]: procedures = 691, calls = 2503, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 816 [2022-12-14 08:12:57,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:12:57,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:12:57,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:12:57,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:12:57,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,579 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:12:57,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:12:57,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:12:57,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:12:57,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (1/1) ... [2022-12-14 08:12:57,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:12:57,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:12:57,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:12:57,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:12:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-14 08:12:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-14 08:12:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:12:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 08:12:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 08:12:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:12:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 08:12:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 08:12:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-12-14 08:12:57,648 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-12-14 08:12:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 08:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 08:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:12:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 08:12:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 08:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-12-14 08:12:57,649 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-12-14 08:12:57,649 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 08:12:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 08:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 08:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 08:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 08:12:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 08:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-12-14 08:12:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-12-14 08:12:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-12-14 08:12:57,651 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-12-14 08:12:57,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:12:57,852 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:12:57,855 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:12:58,594 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:12:58,845 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:12:58,845 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:12:58,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:12:58 BoogieIcfgContainer [2022-12-14 08:12:58,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:12:58,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:12:58,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:12:58,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:12:58,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:12:55" (1/3) ... [2022-12-14 08:12:58,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b59429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:12:58, skipping insertion in model container [2022-12-14 08:12:58,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:12:57" (2/3) ... [2022-12-14 08:12:58,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b59429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:12:58, skipping insertion in model container [2022-12-14 08:12:58,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:12:58" (3/3) ... [2022-12-14 08:12:58,856 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness_negated.i [2022-12-14 08:12:58,874 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:12:58,874 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:12:58,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:12:58,914 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=LoopsAndPotentialCycles, 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;@1edf1092, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:12:58,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:12:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-14 08:12:58,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 08:12:58,923 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:12:58,923 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:12:58,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:12:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:12:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash -152620430, now seen corresponding path program 1 times [2022-12-14 08:12:58,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:12:58,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116206015] [2022-12-14 08:12:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:12:58,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:12:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 08:13:01,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:01,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116206015] [2022-12-14 08:13:01,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116206015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:13:01,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:13:01,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 08:13:01,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258973111] [2022-12-14 08:13:01,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:13:01,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 08:13:01,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:13:01,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 08:13:01,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:13:01,535 INFO L87 Difference]: Start difference. First operand has 83 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 08:13:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:13:02,798 INFO L93 Difference]: Finished difference Result 124 states and 163 transitions. [2022-12-14 08:13:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 08:13:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 50 [2022-12-14 08:13:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:13:02,806 INFO L225 Difference]: With dead ends: 124 [2022-12-14 08:13:02,806 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 08:13:02,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-14 08:13:02,810 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 36 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:13:02,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 451 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 08:13:02,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 08:13:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-12-14 08:13:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-12-14 08:13:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2022-12-14 08:13:02,845 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 50 [2022-12-14 08:13:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:13:02,846 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2022-12-14 08:13:02,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 7 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-12-14 08:13:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2022-12-14 08:13:02,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 08:13:02,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:13:02,848 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:13:02,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:13:02,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:13:02,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:13:02,849 INFO L85 PathProgramCache]: Analyzing trace with hash 231625772, now seen corresponding path program 1 times [2022-12-14 08:13:02,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:13:02,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250450618] [2022-12-14 08:13:02,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:02,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:13:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 08:13:08,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:13:08,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250450618] [2022-12-14 08:13:08,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250450618] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:13:08,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69424195] [2022-12-14 08:13:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:13:08,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:13:08,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:13:08,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:13:08,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2931f802-afb3-4864-be47-2b8f85b072be/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:13:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:13:08,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 93 conjunts are in the unsatisfiable core [2022-12-14 08:13:08,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:13:09,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 08:13:11,684 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 08:13:11,689 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 08:13:11,696 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 08:13:11,705 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 08:13:12,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 8 treesize of output 4 [2022-12-14 08:13:12,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2022-12-14 08:13:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 08:13:12,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:13:14,936 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-12-14 08:19:35,597 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.