./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW --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 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- 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-4e7fbc6 [2022-11-23 15:13:50,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:13:50,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:13:50,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:13:50,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:13:50,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:13:50,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:13:50,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:13:50,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:13:50,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:13:50,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:13:50,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:13:50,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:13:50,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:13:50,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:13:50,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:13:50,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:13:50,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:13:50,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:13:50,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:13:50,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:13:50,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:13:50,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:13:50,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:13:50,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:13:50,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:13:50,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:13:50,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:13:50,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:13:50,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:13:50,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:13:50,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:13:50,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:13:50,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:13:50,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:13:50,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:13:50,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:13:50,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:13:50,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:13:50,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:13:50,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:13:50,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:13:50,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:13:50,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:13:50,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:13:50,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:13:50,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:13:50,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:13:50,722 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:13:50,722 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:13:50,722 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:13:50,723 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:13:50,724 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:13:50,724 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:13:50,724 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:13:50,724 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:13:50,725 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:13:50,725 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:13:50,725 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:13:50,725 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:13:50,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:13:50,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:13:50,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:13:50,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:13:50,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:13:50,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:13:50,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:13:50,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:13:50,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:13:50,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:13:50,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:13:50,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:13:50,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:13:50,730 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:13:50,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:13:50,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:13:50,731 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:13:50,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:13:50,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:13:50,731 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:13:50,731 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_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2022-11-23 15:13:51,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:13:51,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:13:51,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:13:51,041 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:13:51,042 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:13:51,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-11-23 15:13:54,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:13:54,855 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:13:54,858 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-11-23 15:13:54,908 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/data/968d03d6a/6468c29bff9f4bb6a85096eb12a8ffda/FLAG65dd273bf [2022-11-23 15:13:54,933 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/data/968d03d6a/6468c29bff9f4bb6a85096eb12a8ffda [2022-11-23 15:13:54,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:13:54,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:13:54,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:13:54,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:13:54,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:13:54,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:54" (1/1) ... [2022-11-23 15:13:54,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a220d95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:54, skipping insertion in model container [2022-11-23 15:13:54,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:54" (1/1) ... [2022-11-23 15:13:54,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:13:55,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:13:55,476 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-11-23 15:13:55,486 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-11-23 15:13:56,754 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:56,755 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:56,757 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:56,759 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:56,761 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:56,778 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:56,790 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:56,793 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:56,793 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:57,469 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 15:13:57,473 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 15:13:57,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 15:13:57,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 15:13:57,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 15:13:57,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 15:13:57,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 15:13:57,495 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 15:13:57,498 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 15:13:57,501 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 15:13:57,780 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 15:13:57,910 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:57,910 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:13:58,048 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:13:58,077 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-11-23 15:13:58,078 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-11-23 15:13:58,131 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,131 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,132 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,132 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,133 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,149 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,150 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,151 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,152 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,220 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 15:13:58,221 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 15:13:58,222 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 15:13:58,226 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 15:13:58,229 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 15:13:58,229 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 15:13:58,232 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 15:13:58,232 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 15:13:58,233 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 15:13:58,246 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 15:13:58,291 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 15:13:58,389 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,390 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 15:13:58,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:13:58,783 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:13:58,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58 WrapperNode [2022-11-23 15:13:58,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:13:58,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:13:58,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:13:58,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:13:58,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:58,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,020 INFO L138 Inliner]: procedures = 691, calls = 2676, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 967 [2022-11-23 15:13:59,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:13:59,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:13:59,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:13:59,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:13:59,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:13:59,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:13:59,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:13:59,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:13:59,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (1/1) ... [2022-11-23 15:13:59,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:13:59,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:13:59,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:13:59,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:13:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-23 15:13:59,237 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-23 15:13:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:13:59,239 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-23 15:13:59,239 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-23 15:13:59,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:13:59,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 15:13:59,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 15:13:59,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:13:59,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:13:59,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:13:59,242 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-23 15:13:59,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-11-23 15:13:59,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:13:59,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:13:59,244 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-23 15:13:59,244 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-23 15:13:59,244 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-23 15:13:59,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-23 15:13:59,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:13:59,245 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:13:59,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:13:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:13:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:13:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-23 15:13:59,246 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-23 15:13:59,246 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-11-23 15:13:59,247 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-11-23 15:13:59,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:13:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-23 15:13:59,248 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-23 15:13:59,248 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-23 15:13:59,248 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-23 15:13:59,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:13:59,650 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:13:59,653 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:14:01,536 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:14:01,847 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:14:01,847 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 15:14:01,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:01 BoogieIcfgContainer [2022-11-23 15:14:01,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:14:01,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:14:01,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:14:01,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:14:01,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:13:54" (1/3) ... [2022-11-23 15:14:01,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0e5d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:01, skipping insertion in model container [2022-11-23 15:14:01,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:58" (2/3) ... [2022-11-23 15:14:01,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0e5d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:01, skipping insertion in model container [2022-11-23 15:14:01,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:01" (3/3) ... [2022-11-23 15:14:01,866 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2022-11-23 15:14:01,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:14:01,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:14:01,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:14:01,981 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;@164f92d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:14:01,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:14:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-23 15:14:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 15:14:02,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:02,003 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:02,004 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:02,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:02,013 INFO L85 PathProgramCache]: Analyzing trace with hash -318388025, now seen corresponding path program 1 times [2022-11-23 15:14:02,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:02,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874009274] [2022-11-23 15:14:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:02,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-23 15:14:03,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:03,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874009274] [2022-11-23 15:14:03,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874009274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:03,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:03,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:14:03,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429023286] [2022-11-23 15:14:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:03,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:14:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:14:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:14:03,237 INFO L87 Difference]: Start difference. First operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:14:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:03,689 INFO L93 Difference]: Finished difference Result 228 states and 344 transitions. [2022-11-23 15:14:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:14:03,692 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 61 [2022-11-23 15:14:03,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:03,705 INFO L225 Difference]: With dead ends: 228 [2022-11-23 15:14:03,706 INFO L226 Difference]: Without dead ends: 138 [2022-11-23 15:14:03,714 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 [2022-11-23 15:14:03,724 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:03,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:14:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-23 15:14:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-23 15:14:03,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-23 15:14:03,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 192 transitions. [2022-11-23 15:14:03,803 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 192 transitions. Word has length 61 [2022-11-23 15:14:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:03,808 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 192 transitions. [2022-11-23 15:14:03,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:14:03,809 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 192 transitions. [2022-11-23 15:14:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 15:14:03,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:03,815 INFO L195 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:03,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:14:03,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:03,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:03,817 INFO L85 PathProgramCache]: Analyzing trace with hash -402709972, now seen corresponding path program 1 times [2022-11-23 15:14:03,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:03,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109560780] [2022-11-23 15:14:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 15:14:20,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:20,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109560780] [2022-11-23 15:14:20,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109560780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:14:20,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:14:20,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 15:14:20,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360417381] [2022-11-23 15:14:20,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:14:20,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 15:14:20,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:14:20,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 15:14:20,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:14:20,901 INFO L87 Difference]: Start difference. First operand 138 states and 192 transitions. Second operand has 11 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 15:14:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:14:25,058 INFO L93 Difference]: Finished difference Result 188 states and 264 transitions. [2022-11-23 15:14:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:14:25,061 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 64 [2022-11-23 15:14:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:14:25,064 INFO L225 Difference]: With dead ends: 188 [2022-11-23 15:14:25,064 INFO L226 Difference]: Without dead ends: 186 [2022-11-23 15:14:25,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:14:25,066 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 121 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:14:25,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1610 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-23 15:14:25,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-23 15:14:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 142. [2022-11-23 15:14:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 74 states have (on average 1.162162162162162) internal successors, (86), 75 states have internal predecessors, (86), 55 states have call successors, (55), 12 states have call predecessors, (55), 12 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-23 15:14:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2022-11-23 15:14:25,118 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 64 [2022-11-23 15:14:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:14:25,119 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2022-11-23 15:14:25,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-23 15:14:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2022-11-23 15:14:25,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 15:14:25,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:14:25,125 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:14:25,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:14:25,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:14:25,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:14:25,134 INFO L85 PathProgramCache]: Analyzing trace with hash -660648870, now seen corresponding path program 1 times [2022-11-23 15:14:25,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:14:25,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072907554] [2022-11-23 15:14:25,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:25,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:14:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:14:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-23 15:14:50,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:14:50,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072907554] [2022-11-23 15:14:50,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072907554] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:14:50,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371120867] [2022-11-23 15:14:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:14:50,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:14:50,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:14:50,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:14:50,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cfd63e-b737-42b1-9ac6-e9660b0b5018/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:15:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:02,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 2864 conjuncts, 239 conjunts are in the unsatisfiable core [2022-11-23 15:15:02,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:15:02,814 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 15:15:02,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-11-23 15:15:03,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 15:15:04,098 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-23 15:15:04,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 15:15:05,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:05,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:05,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-11-23 15:15:05,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2022-11-23 15:15:10,633 INFO L350 Elim1Store]: Elim1 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 26 treesize of output 26 [2022-11-23 15:15:10,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:10,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:10,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:10,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:10,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2022-11-23 15:15:11,082 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-23 15:15:11,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 53 [2022-11-23 15:15:23,836 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-23 15:15:23,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 78 [2022-11-23 15:15:23,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:23,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:15:23,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2022-11-23 15:15:23,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2022-11-23 15:15:24,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:24,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-23 15:15:24,189 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-11-23 15:15:24,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2022-11-23 15:15:30,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:30,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 73 [2022-11-23 15:15:30,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:30,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 39 [2022-11-23 15:15:30,214 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-23 15:15:30,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:15:30,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 15:15:30,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2022-11-23 15:15:30,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 63 [2022-11-23 15:16:01,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:16:01,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 176 treesize of output 128 [2022-11-23 15:16:01,509 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:16:01,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2022-11-23 15:16:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:16:02,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:16:05,417 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-23 15:24:16,034 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.