./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_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_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/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_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/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_9167f669-b17d-47e0-817a-a5f4a4af3be4/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 21e14c4abf3c8c626ff1e4d64bac7246a96ab8c19ab8b6f263006a7e1f8fc191 --- 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 02:16:27,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:16:27,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:16:27,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:16:27,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:16:27,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:16:27,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:16:27,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:16:27,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:16:27,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:16:27,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:16:27,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:16:27,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:16:27,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:16:27,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:16:27,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:16:27,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:16:27,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:16:27,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:16:27,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:16:27,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:16:27,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:16:27,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:16:27,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:16:27,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:16:27,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:16:27,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:16:27,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:16:27,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:16:27,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:16:27,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:16:27,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:16:27,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:16:27,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:16:27,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:16:27,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:16:27,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:16:27,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:16:27,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:16:27,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:16:27,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:16:27,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:16:27,640 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:16:27,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:16:27,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:16:27,642 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:16:27,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:16:27,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:16:27,644 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:16:27,644 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:16:27,644 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:16:27,645 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:16:27,646 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:16:27,647 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:16:27,647 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:16:27,647 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:16:27,647 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:16:27,648 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:16:27,648 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:16:27,648 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:16:27,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:16:27,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:16:27,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:16:27,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:16:27,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:16:27,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:16:27,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:16:27,653 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:16:27,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:16:27,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:16:27,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:16:27,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:16:27,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:16:27,655 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:16:27,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:16:27,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:16:27,656 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:16:27,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:16:27,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:16:27,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:16:27,658 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_9167f669-b17d-47e0-817a-a5f4a4af3be4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21e14c4abf3c8c626ff1e4d64bac7246a96ab8c19ab8b6f263006a7e1f8fc191 [2022-11-03 02:16:28,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:16:28,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:16:28,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:16:28,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:16:28,090 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:16:28,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2022-11-03 02:16:28,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/data/5dbbcc876/2e1d6acf96d546958aab7b7290a1dac1/FLAG74036acc4 [2022-11-03 02:16:29,195 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:16:29,196 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2022-11-03 02:16:29,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/data/5dbbcc876/2e1d6acf96d546958aab7b7290a1dac1/FLAG74036acc4 [2022-11-03 02:16:29,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/data/5dbbcc876/2e1d6acf96d546958aab7b7290a1dac1 [2022-11-03 02:16:29,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:16:29,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:16:29,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:16:29,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:16:29,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:16:29,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:16:29" (1/1) ... [2022-11-03 02:16:29,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0e6c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:29, skipping insertion in model container [2022-11-03 02:16:29,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:16:29" (1/1) ... [2022-11-03 02:16:29,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:16:29,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:16:30,175 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_9167f669-b17d-47e0-817a-a5f4a4af3be4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4504,4517] [2022-11-03 02:16:30,185 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_9167f669-b17d-47e0-817a-a5f4a4af3be4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4564,4577] [2022-11-03 02:16:31,252 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:31,254 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:31,254 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:31,256 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:31,257 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:31,278 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:31,286 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:31,292 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:31,293 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:31,760 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:16:31,762 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:16:31,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:16:31,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:16:31,767 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:16:31,768 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:16:31,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:16:31,770 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:16:31,771 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:16:31,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:16:31,958 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:16:32,121 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,122 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:16:32,260 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:16:32,295 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_9167f669-b17d-47e0-817a-a5f4a4af3be4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4504,4517] [2022-11-03 02:16:32,295 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_9167f669-b17d-47e0-817a-a5f4a4af3be4/sv-benchmarks/c/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4564,4577] [2022-11-03 02:16:32,372 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,373 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,373 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,374 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,379 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,390 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,391 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,396 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,396 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,474 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:16:32,475 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:16:32,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:16:32,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:16:32,478 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:16:32,478 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:16:32,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:16:32,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:16:32,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:16:32,481 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:16:32,504 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:16:32,625 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,626 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:16:32,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:16:32,921 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:16:32,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32 WrapperNode [2022-11-03 02:16:32,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:16:32,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:16:32,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:16:32,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:16:32,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,234 INFO L138 Inliner]: procedures = 690, calls = 2614, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 811 [2022-11-03 02:16:33,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:16:33,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:16:33,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:16:33,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:16:33,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,364 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:16:33,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:16:33,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:16:33,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:16:33,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (1/1) ... [2022-11-03 02:16:33,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:16:33,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:33,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:16:33,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:16:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-03 02:16:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-03 02:16:33,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:16:33,493 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 02:16:33,493 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 02:16:33,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:16:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:16:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:16:33,495 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2022-11-03 02:16:33,495 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2022-11-03 02:16:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:16:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:16:33,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:16:33,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:16:33,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:16:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 02:16:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 02:16:33,498 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-03 02:16:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-03 02:16:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:16:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:16:33,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:16:33,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:16:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:16:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2022-11-03 02:16:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2022-11-03 02:16:33,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:16:33,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:16:33,874 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:16:33,877 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:16:35,429 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:16:35,732 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:16:35,732 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:16:35,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:16:35 BoogieIcfgContainer [2022-11-03 02:16:35,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:16:35,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:16:35,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:16:35,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:16:35,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:16:29" (1/3) ... [2022-11-03 02:16:35,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efe21e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:16:35, skipping insertion in model container [2022-11-03 02:16:35,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:16:32" (2/3) ... [2022-11-03 02:16:35,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efe21e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:16:35, skipping insertion in model container [2022-11-03 02:16:35,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:16:35" (3/3) ... [2022-11-03 02:16:35,756 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_satisfies_pred_harness.i [2022-11-03 02:16:35,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:16:35,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:16:35,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:16:35,885 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;@34635850, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:16:35,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:16:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-03 02:16:35,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 02:16:35,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:35,905 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] [2022-11-03 02:16:35,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:35,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2120443845, now seen corresponding path program 1 times [2022-11-03 02:16:35,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:35,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674122217] [2022-11-03 02:16:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:35,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:36,936 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 02:16:36,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:36,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674122217] [2022-11-03 02:16:36,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674122217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:36,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:36,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:16:36,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439532144] [2022-11-03 02:16:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:36,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:16:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:16:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:16:37,007 INFO L87 Difference]: Start difference. First operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:16:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:37,330 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2022-11-03 02:16:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:16:37,333 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2022-11-03 02:16:37,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:37,346 INFO L225 Difference]: With dead ends: 103 [2022-11-03 02:16:37,346 INFO L226 Difference]: Without dead ends: 64 [2022-11-03 02:16:37,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:16:37,363 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:37,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:16:37,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-03 02:16:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-03 02:16:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-03 02:16:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2022-11-03 02:16:37,438 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 40 [2022-11-03 02:16:37,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:37,441 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2022-11-03 02:16:37,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:16:37,442 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2022-11-03 02:16:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 02:16:37,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:37,447 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] [2022-11-03 02:16:37,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:16:37,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:37,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:37,449 INFO L85 PathProgramCache]: Analyzing trace with hash -281444016, now seen corresponding path program 1 times [2022-11-03 02:16:37,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:37,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817009451] [2022-11-03 02:16:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:16:42,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:42,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817009451] [2022-11-03 02:16:42,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817009451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:16:42,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:16:42,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 02:16:42,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946628048] [2022-11-03 02:16:42,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:16:42,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:16:42,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:16:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:16:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:16:42,298 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 13 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 02:16:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:16:45,746 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2022-11-03 02:16:45,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:16:45,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2022-11-03 02:16:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:16:45,751 INFO L225 Difference]: With dead ends: 89 [2022-11-03 02:16:45,751 INFO L226 Difference]: Without dead ends: 87 [2022-11-03 02:16:45,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:16:45,753 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:16:45,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 442 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 02:16:45,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-03 02:16:45,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2022-11-03 02:16:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.175) internal successors, (47), 42 states have internal predecessors, (47), 24 states have call successors, (24), 9 states have call predecessors, (24), 8 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-03 02:16:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2022-11-03 02:16:45,773 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 42 [2022-11-03 02:16:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:16:45,774 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2022-11-03 02:16:45,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-03 02:16:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2022-11-03 02:16:45,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 02:16:45,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:16:45,776 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, 1, 1, 1] [2022-11-03 02:16:45,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:16:45,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:16:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:16:45,778 INFO L85 PathProgramCache]: Analyzing trace with hash 323235964, now seen corresponding path program 1 times [2022-11-03 02:16:45,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:16:45,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971673580] [2022-11-03 02:16:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:45,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:16:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:16:54,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:16:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971673580] [2022-11-03 02:16:54,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971673580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:16:54,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376500388] [2022-11-03 02:16:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:16:54,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:16:54,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:16:54,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:16:54,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9167f669-b17d-47e0-817a-a5f4a4af3be4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:16:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:16:55,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-03 02:16:55,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:16:56,002 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 02:16:56,010 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 02:16:57,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:16:57,989 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:16:57,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2022-11-03 02:16:58,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:16:58,008 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 02:16:58,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 7 [2022-11-03 02:16:59,664 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-03 02:16:59,665 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 1 case distinctions, treesize of input 46 treesize of output 26 [2022-11-03 02:16:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:16:59,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:17:01,974 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-11-03 02:17:21,486 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.