./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/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_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/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_61133fa2-9c3a-46ab-8c98-04771c97a561/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 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- 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 02:27:16,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:27:16,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:27:17,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:27:17,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:27:17,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:27:17,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:27:17,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:27:17,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:27:17,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:27:17,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:27:17,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:27:17,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:27:17,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:27:17,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:27:17,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:27:17,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:27:17,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:27:17,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:27:17,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:27:17,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:27:17,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:27:17,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:27:17,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:27:17,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:27:17,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:27:17,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:27:17,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:27:17,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:27:17,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:27:17,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:27:17,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:27:17,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:27:17,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:27:17,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:27:17,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:27:17,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:27:17,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:27:17,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:27:17,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:27:17,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:27:17,100 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:27:17,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:27:17,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:27:17,147 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:27:17,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:27:17,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:27:17,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:27:17,149 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:27:17,149 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:27:17,150 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:27:17,150 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:27:17,151 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:27:17,151 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:27:17,151 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:27:17,152 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:27:17,152 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:27:17,152 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:27:17,152 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:27:17,153 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:27:17,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:27:17,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:27:17,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:27:17,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:27:17,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:27:17,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:27:17,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:27:17,155 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:27:17,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:27:17,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:27:17,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:27:17,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:27:17,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:27:17,157 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:27:17,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:27:17,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:27:17,157 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:27:17,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:27:17,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:27:17,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:27:17,158 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_61133fa2-9c3a-46ab-8c98-04771c97a561/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2022-11-03 02:27:17,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:27:17,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:27:17,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:27:17,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:27:17,548 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:27:17,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2022-11-03 02:27:17,628 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/data/4d7609e59/a49cd31de4b34fb1800d41db42dec567/FLAGb2a19e8fb [2022-11-03 02:27:18,515 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:27:18,516 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2022-11-03 02:27:18,569 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/data/4d7609e59/a49cd31de4b34fb1800d41db42dec567/FLAGb2a19e8fb [2022-11-03 02:27:19,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/data/4d7609e59/a49cd31de4b34fb1800d41db42dec567 [2022-11-03 02:27:19,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:27:19,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:27:19,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:27:19,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:27:19,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:27:19,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:27:19" (1/1) ... [2022-11-03 02:27:19,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b30dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:19, skipping insertion in model container [2022-11-03 02:27:19,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:27:19" (1/1) ... [2022-11-03 02:27:19,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:27:19,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:27:19,504 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_61133fa2-9c3a-46ab-8c98-04771c97a561/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2022-11-03 02:27:19,510 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_61133fa2-9c3a-46ab-8c98-04771c97a561/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2022-11-03 02:27:20,415 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:20,416 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:20,417 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:20,417 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:20,419 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:20,434 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:20,434 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:20,436 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:20,437 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:20,829 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:27:20,830 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:27:20,832 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:27:20,833 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:27:20,834 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:27:20,835 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:27:20,836 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:27:20,837 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:27:20,837 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:27:20,838 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:27:21,074 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:27:21,221 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,223 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:27:21,368 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:27:21,396 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_61133fa2-9c3a-46ab-8c98-04771c97a561/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2022-11-03 02:27:21,397 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_61133fa2-9c3a-46ab-8c98-04771c97a561/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2022-11-03 02:27:21,497 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,497 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,498 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,498 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,499 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,511 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,511 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,515 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,516 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 02:27:21,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 02:27:21,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 02:27:21,600 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 02:27:21,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 02:27:21,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 02:27:21,602 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 02:27:21,602 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 02:27:21,603 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 02:27:21,603 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 02:27:21,639 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 02:27:21,714 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,714 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 02:27:21,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:27:21,976 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:27:21,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21 WrapperNode [2022-11-03 02:27:21,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:27:21,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:27:21,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:27:21,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:27:21,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,142 INFO L138 Inliner]: procedures = 690, calls = 2639, calls flagged for inlining = 61, calls inlined = 9, statements flattened = 868 [2022-11-03 02:27:22,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:27:22,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:27:22,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:27:22,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:27:22,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:27:22,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:27:22,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:27:22,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:27:22,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (1/1) ... [2022-11-03 02:27:22,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:27:22,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:22,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:27:22,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:27:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-03 02:27:22,393 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-03 02:27:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-03 02:27:22,394 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-03 02:27:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:27:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 02:27:22,395 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 02:27:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:27:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:27:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:27:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_from_buf [2022-11-03 02:27:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_from_buf [2022-11-03 02:27:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:27:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:27:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:27:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:27:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:27:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 02:27:22,398 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 02:27:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-03 02:27:22,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-03 02:27:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:27:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:27:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:27:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:27:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:27:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-03 02:27:22,401 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-03 02:27:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-03 02:27:22,401 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-03 02:27:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:27:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:27:22,716 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:27:22,719 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:27:24,349 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:27:24,777 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:27:24,777 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:27:24,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:27:24 BoogieIcfgContainer [2022-11-03 02:27:24,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:27:24,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:27:24,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:27:24,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:27:24,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:27:19" (1/3) ... [2022-11-03 02:27:24,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d796b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:27:24, skipping insertion in model container [2022-11-03 02:27:24,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:27:21" (2/3) ... [2022-11-03 02:27:24,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d796b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:27:24, skipping insertion in model container [2022-11-03 02:27:24,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:27:24" (3/3) ... [2022-11-03 02:27:24,788 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2022-11-03 02:27:24,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:27:24,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:27:24,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:27:24,863 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;@3591118a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:27:24,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:27:24,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 48 states have (on average 1.1875) internal successors, (57), 49 states have internal predecessors, (57), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-03 02:27:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-03 02:27:24,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:24,876 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:24,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:24,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2075530696, now seen corresponding path program 1 times [2022-11-03 02:27:24,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:24,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080030298] [2022-11-03 02:27:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:24,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:27:32,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:32,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080030298] [2022-11-03 02:27:32,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080030298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:32,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:32,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-03 02:27:32,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906951538] [2022-11-03 02:27:32,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:32,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 02:27:32,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:32,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 02:27:32,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:27:32,280 INFO L87 Difference]: Start difference. First operand has 88 states, 48 states have (on average 1.1875) internal successors, (57), 49 states have internal predecessors, (57), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 02:27:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:34,049 INFO L93 Difference]: Finished difference Result 191 states and 276 transitions. [2022-11-03 02:27:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:27:34,053 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2022-11-03 02:27:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:34,068 INFO L225 Difference]: With dead ends: 191 [2022-11-03 02:27:34,069 INFO L226 Difference]: Without dead ends: 128 [2022-11-03 02:27:34,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:27:34,086 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 87 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:34,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 845 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 02:27:34,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-03 02:27:34,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 98. [2022-11-03 02:27:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 54 states have internal predecessors, (58), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-03 02:27:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2022-11-03 02:27:34,160 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 43 [2022-11-03 02:27:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:34,160 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2022-11-03 02:27:34,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 8 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 02:27:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2022-11-03 02:27:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 02:27:34,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:34,163 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:34,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:27:34,164 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1091548635, now seen corresponding path program 1 times [2022-11-03 02:27:34,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:34,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486743098] [2022-11-03 02:27:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:34,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-03 02:27:47,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:47,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486743098] [2022-11-03 02:27:47,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486743098] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:27:47,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416221891] [2022-11-03 02:27:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:47,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:47,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:47,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:47,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61133fa2-9c3a-46ab-8c98-04771c97a561/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:27:47,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:47,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 2605 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-03 02:27:47,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:27:47,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:27:48,617 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 02:27:48,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-03 02:27:48,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:27:48,733 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 02:27:49,506 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-03 02:27:49,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2022-11-03 02:27:49,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 02:27:49,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-03 02:27:54,054 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-03 02:27:54,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-11-03 02:28:02,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:02,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:02,928 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 02:28:02,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2022-11-03 02:28:02,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:28:02,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:28:02,977 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 02:28:02,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-11-03 02:28:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:28:08,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:28:09,872 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2022-11-03 02:28:23,886 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.