./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI --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 e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- 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-5e519f3 [2022-11-03 01:43:19,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:43:19,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:43:19,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:43:19,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:43:19,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:43:19,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:43:19,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:43:19,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:43:19,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:43:19,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:43:19,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:43:19,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:43:19,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:43:19,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:43:19,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:43:19,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:43:19,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:43:19,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:43:19,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:43:19,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:43:19,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:43:19,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:43:19,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:43:19,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:43:19,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:43:19,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:43:19,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:43:19,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:43:19,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:43:19,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:43:19,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:43:19,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:43:19,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:43:19,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:43:19,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:43:19,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:43:19,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:43:19,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:43:19,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:43:19,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:43:19,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:43:19,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:43:19,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:43:19,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:43:19,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:43:19,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:43:19,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:43:19,799 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:43:19,800 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:43:19,800 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:43:19,800 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:43:19,800 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:43:19,801 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:43:19,801 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:43:19,801 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:43:19,801 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:43:19,802 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:43:19,802 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:43:19,802 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:43:19,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:43:19,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:43:19,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:43:19,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:43:19,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:43:19,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:43:19,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:43:19,805 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:43:19,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:43:19,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:43:19,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:43:19,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:43:19,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:43:19,806 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:43:19,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:43:19,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:43:19,807 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:43:19,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:43:19,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:43:19,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:43:19,816 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_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2022-11-03 01:43:20,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:43:20,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:43:20,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:43:20,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:43:20,118 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:43:20,120 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-11-03 01:43:20,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/data/a7c3bda15/e005c51eca9c458ba513dd175142fed0/FLAG4b14185da [2022-11-03 01:43:21,199 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:43:21,201 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-11-03 01:43:21,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/data/a7c3bda15/e005c51eca9c458ba513dd175142fed0/FLAG4b14185da [2022-11-03 01:43:21,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/data/a7c3bda15/e005c51eca9c458ba513dd175142fed0 [2022-11-03 01:43:21,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:43:21,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:43:21,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:43:21,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:43:21,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:43:21,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:43:21" (1/1) ... [2022-11-03 01:43:21,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e7091f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:21, skipping insertion in model container [2022-11-03 01:43:21,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:43:21" (1/1) ... [2022-11-03 01:43:21,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:43:21,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:43:22,051 WARN L230 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_9794a216-ef39-4abc-801b-a09360c158ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-11-03 01:43:22,058 WARN L230 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_9794a216-ef39-4abc-801b-a09360c158ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-11-03 01:43:23,092 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,093 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,094 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,095 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,103 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,120 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,121 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,123 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,123 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,574 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:43:23,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:43:23,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:43:23,578 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:43:23,580 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:43:23,581 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:43:23,582 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:43:23,583 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:43:23,584 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:43:23,585 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:43:23,800 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:43:23,916 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:23,917 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:43:24,140 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:43:24,161 WARN L230 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_9794a216-ef39-4abc-801b-a09360c158ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4502,4515] [2022-11-03 01:43:24,162 WARN L230 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_9794a216-ef39-4abc-801b-a09360c158ed/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i[4562,4575] [2022-11-03 01:43:24,206 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,207 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,207 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,208 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,209 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,216 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,217 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,218 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,218 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,281 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:43:24,283 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:43:24,283 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:43:24,284 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:43:24,286 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:43:24,286 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:43:24,287 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:43:24,288 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:43:24,289 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:43:24,289 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:43:24,338 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:43:24,434 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,435 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:43:24,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:43:24,812 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:43:24,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24 WrapperNode [2022-11-03 01:43:24,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:43:24,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:43:24,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:43:24,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:43:24,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:24,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,024 INFO L138 Inliner]: procedures = 691, calls = 2504, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 817 [2022-11-03 01:43:25,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:43:25,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:43:25,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:43:25,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:43:25,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,083 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:43:25,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:43:25,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:43:25,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:43:25,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (1/1) ... [2022-11-03 01:43:25,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:43:25,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:43:25,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:43:25,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:43:25,204 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-03 01:43:25,205 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-03 01:43:25,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:43:25,207 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 01:43:25,207 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 01:43:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:43:25,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 01:43:25,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 01:43:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-11-03 01:43:25,209 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-11-03 01:43:25,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:43:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:43:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:43:25,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:43:25,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:43:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 01:43:25,211 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 01:43:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-03 01:43:25,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-03 01:43:25,211 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:43:25,212 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:43:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:43:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:43:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:43:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-03 01:43:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-03 01:43:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:43:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-03 01:43:25,213 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-03 01:43:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-03 01:43:25,228 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-03 01:43:25,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:43:25,662 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:43:25,665 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:43:27,041 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:43:27,490 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:43:27,490 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:43:27,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:43:27 BoogieIcfgContainer [2022-11-03 01:43:27,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:43:27,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:43:27,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:43:27,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:43:27,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:43:21" (1/3) ... [2022-11-03 01:43:27,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac3799f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:43:27, skipping insertion in model container [2022-11-03 01:43:27,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:43:24" (2/3) ... [2022-11-03 01:43:27,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac3799f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:43:27, skipping insertion in model container [2022-11-03 01:43:27,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:43:27" (3/3) ... [2022-11-03 01:43:27,509 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2022-11-03 01:43:27,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:43:27,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:43:27,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:43:27,631 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;@5c895d82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:43:27,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:43:27,636 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) [2022-11-03 01:43:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 01:43:27,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:27,649 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] [2022-11-03 01:43:27,650 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:43:27,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:27,659 INFO L85 PathProgramCache]: Analyzing trace with hash 591884185, now seen corresponding path program 1 times [2022-11-03 01:43:27,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:27,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455670832] [2022-11-03 01:43:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:27,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-03 01:43:32,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:32,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455670832] [2022-11-03 01:43:32,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455670832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:32,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:32,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:43:32,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394502227] [2022-11-03 01:43:32,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:32,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:43:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:32,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:43:32,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:43:32,493 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) [2022-11-03 01:43:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:35,253 INFO L93 Difference]: Finished difference Result 124 states and 163 transitions. [2022-11-03 01:43:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:43:35,256 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 [2022-11-03 01:43:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:35,274 INFO L225 Difference]: With dead ends: 124 [2022-11-03 01:43:35,275 INFO L226 Difference]: Without dead ends: 81 [2022-11-03 01:43:35,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:43:35,290 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 36 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:35,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 451 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:43:35,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-03 01:43:35,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-03 01:43:35,363 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) [2022-11-03 01:43:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2022-11-03 01:43:35,377 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 50 [2022-11-03 01:43:35,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:35,380 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2022-11-03 01:43:35,380 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) [2022-11-03 01:43:35,381 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2022-11-03 01:43:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 01:43:35,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:35,393 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] [2022-11-03 01:43:35,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:43:35,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:43:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:35,395 INFO L85 PathProgramCache]: Analyzing trace with hash -746103450, now seen corresponding path program 1 times [2022-11-03 01:43:35,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:35,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69868903] [2022-11-03 01:43:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:35,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 01:43:44,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:44,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69868903] [2022-11-03 01:43:44,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69868903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:43:44,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886036151] [2022-11-03 01:43:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:44,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:43:44,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:43:44,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:43:44,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9794a216-ef39-4abc-801b-a09360c158ed/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:43:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:44,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2580 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-03 01:43:44,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:43:45,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:43:48,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:43:48,537 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:43:48,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17 [2022-11-03 01:43:50,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:43:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 01:43:50,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:43:55,323 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-03 01:53:04,819 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.