./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_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_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/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_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/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_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/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 9db28b965fea5f2f8d3364c7a869d0042b63b50d32f7a417c3baadcb401d0709 --- 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 01:39:05,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:39:05,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:39:05,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:39:05,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:39:05,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:39:05,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:39:05,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:39:05,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:39:05,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:39:05,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:39:05,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:39:05,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:39:05,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:39:05,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:39:05,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:39:05,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:39:05,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:39:05,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:39:05,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:39:05,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:39:05,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:39:05,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:39:05,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:39:05,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:39:05,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:39:05,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:39:05,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:39:05,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:39:05,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:39:05,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:39:05,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:39:05,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:39:05,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:39:05,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:39:05,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:39:05,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:39:05,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:39:05,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:39:05,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:39:05,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:39:05,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:39:05,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:39:05,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:39:05,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:39:05,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:39:05,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:39:05,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:39:05,527 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:39:05,528 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:39:05,528 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:39:05,528 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:39:05,529 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:39:05,529 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:39:05,530 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:39:05,530 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:39:05,530 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:39:05,530 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:39:05,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:39:05,531 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:39:05,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:39:05,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:39:05,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:39:05,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:39:05,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:39:05,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:39:05,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:39:05,535 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:39:05,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:39:05,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:39:05,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:39:05,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:39:05,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:39:05,538 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:39:05,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:39:05,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:39:05,538 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:39:05,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:39:05,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:39:05,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:39:05,539 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_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db28b965fea5f2f8d3364c7a869d0042b63b50d32f7a417c3baadcb401d0709 [2022-11-03 01:39:05,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:39:05,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:39:05,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:39:05,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:39:05,899 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:39:05,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2022-11-03 01:39:06,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/data/fd0591f26/23b09c59ee46469a8c65a200d0026184/FLAG4e0078246 [2022-11-03 01:39:06,903 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:39:06,904 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2022-11-03 01:39:06,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/data/fd0591f26/23b09c59ee46469a8c65a200d0026184/FLAG4e0078246 [2022-11-03 01:39:07,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/data/fd0591f26/23b09c59ee46469a8c65a200d0026184 [2022-11-03 01:39:07,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:39:07,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:39:07,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:39:07,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:39:07,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:39:07,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:39:07" (1/1) ... [2022-11-03 01:39:07,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5c31c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:07, skipping insertion in model container [2022-11-03 01:39:07,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:39:07" (1/1) ... [2022-11-03 01:39:07,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:39:07,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:39:07,844 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_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2022-11-03 01:39:07,851 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_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2022-11-03 01:39:08,898 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:08,899 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:08,900 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:08,901 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:08,903 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:08,919 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:08,920 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:08,922 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:08,923 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:39:09,320 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:39:09,321 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:39:09,323 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:39:09,329 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:39:09,330 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:39:09,335 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:39:09,337 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:39:09,339 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:39:09,342 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:39:09,512 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:39:09,635 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,635 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:39:09,754 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:39:09,783 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_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2022-11-03 01:39:09,796 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_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2022-11-03 01:39:09,844 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,847 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,848 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,848 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,849 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,866 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,867 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,870 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,871 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:09,933 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:39:09,935 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:39:09,935 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:39:09,936 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:39:09,937 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:39:09,938 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:39:09,938 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:39:09,939 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:39:09,939 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:39:09,940 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:39:09,974 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:39:10,057 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:10,057 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:39:10,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:39:10,400 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:39:10,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10 WrapperNode [2022-11-03 01:39:10,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:39:10,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:39:10,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:39:10,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:39:10,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,586 INFO L138 Inliner]: procedures = 691, calls = 2614, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 796 [2022-11-03 01:39:10,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:39:10,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:39:10,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:39:10,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:39:10,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,645 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:39:10,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:39:10,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:39:10,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:39:10,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (1/1) ... [2022-11-03 01:39:10,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:39:10,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:39:10,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:39:10,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:39:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-03 01:39:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-03 01:39:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:39:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 01:39:10,757 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 01:39:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:39:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 01:39:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 01:39:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-11-03 01:39:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-11-03 01:39:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:39:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:39:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:39:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:39:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:39:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 01:39:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 01:39:10,760 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:39:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:39:10,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:39:10,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:39:10,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:39:10,762 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-03 01:39:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-03 01:39:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-03 01:39:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-03 01:39:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:39:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-03 01:39:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-03 01:39:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-03 01:39:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-03 01:39:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:39:11,082 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:39:11,084 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:39:12,719 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:39:13,028 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:39:13,028 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:39:13,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:39:13 BoogieIcfgContainer [2022-11-03 01:39:13,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:39:13,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:39:13,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:39:13,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:39:13,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:39:07" (1/3) ... [2022-11-03 01:39:13,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d204e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:39:13, skipping insertion in model container [2022-11-03 01:39:13,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:10" (2/3) ... [2022-11-03 01:39:13,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d204e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:39:13, skipping insertion in model container [2022-11-03 01:39:13,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:39:13" (3/3) ... [2022-11-03 01:39:13,046 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_secure_zero_harness.i [2022-11-03 01:39:13,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:39:13,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:39:13,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:39:13,160 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;@17ed002e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:39:13,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:39:13,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-03 01:39:13,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 01:39:13,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:13,175 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:13,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:39:13,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash 410522729, now seen corresponding path program 1 times [2022-11-03 01:39:13,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:13,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718123298] [2022-11-03 01:39:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:13,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:39:16,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:16,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718123298] [2022-11-03 01:39:16,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718123298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:16,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:16,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:39:16,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482752908] [2022-11-03 01:39:16,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:16,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:39:16,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:16,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:39:16,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:39:16,979 INFO L87 Difference]: Start difference. First operand has 70 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 01:39:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:18,414 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2022-11-03 01:39:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:39:18,421 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2022-11-03 01:39:18,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:18,430 INFO L225 Difference]: With dead ends: 101 [2022-11-03 01:39:18,430 INFO L226 Difference]: Without dead ends: 68 [2022-11-03 01:39:18,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:39:18,437 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 26 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:18,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 322 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 01:39:18,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-03 01:39:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-03 01:39:18,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-03 01:39:18,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2022-11-03 01:39:18,500 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 43 [2022-11-03 01:39:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:18,502 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2022-11-03 01:39:18,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 01:39:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2022-11-03 01:39:18,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 01:39:18,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:18,506 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:18,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:39:18,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:39:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1275170069, now seen corresponding path program 1 times [2022-11-03 01:39:18,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:18,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686126393] [2022-11-03 01:39:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:18,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:39:26,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:26,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686126393] [2022-11-03 01:39:26,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686126393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:39:26,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107353553] [2022-11-03 01:39:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:26,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:39:26,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:39:26,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:39:26,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62c023a6-ff2e-4bc9-a27b-f75909b9aaf6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:39:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:26,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-03 01:39:26,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:39:27,060 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 01:39:30,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 81 treesize of output 69 [2022-11-03 01:39:30,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:39:30,314 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:39:30,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 01:39:30,895 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 32 treesize of output 16 [2022-11-03 01:39:31,084 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:39:31,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:39:34,770 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-03 01:47:24,944 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.