./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7 --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 ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:56:13,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:56:13,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:56:13,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:56:13,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:56:13,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:56:13,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:56:13,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:56:13,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:56:13,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:56:13,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:56:13,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:56:13,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:56:13,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:56:13,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:56:13,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:56:13,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:56:13,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:56:13,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:56:13,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:56:13,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:56:13,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:56:13,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:56:13,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:56:13,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:56:13,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:56:13,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:56:13,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:56:13,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:56:13,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:56:13,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:56:13,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:56:13,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:56:13,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:56:13,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:56:13,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:56:13,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:56:13,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:56:13,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:56:13,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:56:13,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:56:13,943 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:56:13,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:56:13,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:56:13,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:56:13,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:56:13,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:56:13,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:56:13,967 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:56:13,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:56:13,968 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:56:13,968 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:56:13,968 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:56:13,968 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:56:13,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:56:13,969 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:56:13,969 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:56:13,969 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:56:13,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:56:13,970 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:56:13,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:56:13,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:56:13,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:56:13,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:56:13,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:56:13,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:56:13,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:56:13,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:56:13,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:56:13,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:56:13,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:56:13,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:13,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:56:13,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:56:13,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:56:13,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:56:13,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:56:13,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:56:13,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:56:13,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:56:13,974 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 [2021-11-25 18:56:14,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:56:14,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:56:14,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:56:14,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:56:14,303 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:56:14,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2021-11-25 18:56:14,382 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/data/40d6f1e0b/1cf8a04856464cfa908019d3aee7bb1e/FLAGe1f6333be [2021-11-25 18:56:15,384 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:56:15,385 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2021-11-25 18:56:15,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/data/40d6f1e0b/1cf8a04856464cfa908019d3aee7bb1e/FLAGe1f6333be [2021-11-25 18:56:15,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/data/40d6f1e0b/1cf8a04856464cfa908019d3aee7bb1e [2021-11-25 18:56:15,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:56:15,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:56:15,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:15,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:56:15,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:56:15,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:15" (1/1) ... [2021-11-25 18:56:15,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f5f68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:15, skipping insertion in model container [2021-11-25 18:56:15,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:56:15" (1/1) ... [2021-11-25 18:56:15,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:56:15,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:56:16,357 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_8f108700-cf80-4564-b13e-4d4c4886844b/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2021-11-25 18:56:16,364 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_8f108700-cf80-4564-b13e-4d4c4886844b/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2021-11-25 18:56:17,788 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:17,789 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:17,790 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:17,790 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:17,791 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:17,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:17,816 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:17,818 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:17,819 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:18,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:56:18,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:56:18,444 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:56:18,445 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:56:18,450 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:56:18,453 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:56:18,454 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:56:18,455 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:56:18,457 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:56:18,459 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:56:18,682 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:56:18,829 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:18,830 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,179 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,201 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,207 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,207 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,220 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,221 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,259 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,259 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:19,390 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:56:19,418 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_8f108700-cf80-4564-b13e-4d4c4886844b/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2021-11-25 18:56:19,418 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_8f108700-cf80-4564-b13e-4d4c4886844b/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2021-11-25 18:56:19,461 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,461 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,462 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,462 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,463 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,472 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,473 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,504 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:56:19,505 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:56:19,505 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:56:19,507 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:56:19,507 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:56:19,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:56:19,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:56:19,509 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:56:19,509 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:56:19,510 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:56:19,538 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:56:19,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,768 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,773 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,781 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,783 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,783 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,784 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,784 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,785 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:56:19,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:56:20,145 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:56:20,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20 WrapperNode [2021-11-25 18:56:20,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:56:20,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:20,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:56:20,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:56:20,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,422 INFO L137 Inliner]: procedures = 776, calls = 3576, calls flagged for inlining = 77, calls inlined = 6, statements flattened = 787 [2021-11-25 18:56:20,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:56:20,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:56:20,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:56:20,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:56:20,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:56:20,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:56:20,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:56:20,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:56:20,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (1/1) ... [2021-11-25 18:56:20,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:56:20,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:56:20,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:56:20,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:56:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 18:56:20,671 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 18:56:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:56:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:56:20,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:56:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:56:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:56:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:56:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:56:20,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:56:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 18:56:20,674 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 18:56:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:56:20,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:56:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2021-11-25 18:56:20,675 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2021-11-25 18:56:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:56:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-25 18:56:20,675 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-25 18:56:20,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:56:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:56:20,676 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:56:20,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:56:20,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:56:21,119 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:56:21,121 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:56:23,062 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-11-25 18:56:23,073 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:56:23,396 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:56:23,396 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 18:56:23,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:23 BoogieIcfgContainer [2021-11-25 18:56:23,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:56:23,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:56:23,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:56:23,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:56:23,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:56:15" (1/3) ... [2021-11-25 18:56:23,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8dd9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:23, skipping insertion in model container [2021-11-25 18:56:23,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:56:20" (2/3) ... [2021-11-25 18:56:23,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8dd9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:56:23, skipping insertion in model container [2021-11-25 18:56:23,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:56:23" (3/3) ... [2021-11-25 18:56:23,416 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_byte_cursor_ptr_harness.i [2021-11-25 18:56:23,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:56:23,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:56:23,486 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:56:23,494 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:56:23,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:56:23,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 55 states have internal predecessors, (86), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-25 18:56:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 18:56:23,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:23,523 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:23,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:23,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:23,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1999499499, now seen corresponding path program 1 times [2021-11-25 18:56:23,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:23,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300813039] [2021-11-25 18:56:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:23,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 18:56:25,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:25,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300813039] [2021-11-25 18:56:25,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300813039] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:56:25,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:56:25,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-25 18:56:25,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834781871] [2021-11-25 18:56:25,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:56:25,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 18:56:25,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 18:56:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:56:25,660 INFO L87 Difference]: Start difference. First operand has 75 states, 55 states have (on average 1.5636363636363637) internal successors, (86), 55 states have internal predecessors, (86), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-25 18:56:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:56:29,334 INFO L93 Difference]: Finished difference Result 144 states and 221 transitions. [2021-11-25 18:56:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:56:29,337 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 41 [2021-11-25 18:56:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:56:29,351 INFO L225 Difference]: With dead ends: 144 [2021-11-25 18:56:29,352 INFO L226 Difference]: Without dead ends: 126 [2021-11-25 18:56:29,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:56:29,361 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 78 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:56:29,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 325 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-25 18:56:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-25 18:56:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 93. [2021-11-25 18:56:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.515625) internal successors, (97), 67 states have internal predecessors, (97), 20 states have call successors, (20), 7 states have call predecessors, (20), 8 states have return successors, (21), 18 states have call predecessors, (21), 19 states have call successors, (21) [2021-11-25 18:56:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 138 transitions. [2021-11-25 18:56:29,432 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 138 transitions. Word has length 41 [2021-11-25 18:56:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:56:29,434 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 138 transitions. [2021-11-25 18:56:29,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-25 18:56:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 138 transitions. [2021-11-25 18:56:29,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-25 18:56:29,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:56:29,439 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:56:29,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:56:29,440 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:56:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:56:29,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1090056852, now seen corresponding path program 1 times [2021-11-25 18:56:29,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:56:29,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828646308] [2021-11-25 18:56:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:29,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:56:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 18:56:30,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:56:30,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828646308] [2021-11-25 18:56:30,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828646308] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:56:30,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911746100] [2021-11-25 18:56:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:56:30,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:56:30,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:56:30,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:56:30,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f108700-cf80-4564-b13e-4d4c4886844b/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:56:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:56:31,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 118 conjunts are in the unsatisfiable core [2021-11-25 18:56:31,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:56:31,325 INFO L388 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 [2021-11-25 18:56:31,788 INFO L388 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 13 treesize of output 9 [2021-11-25 18:56:31,797 INFO L388 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 13 treesize of output 9 [2021-11-25 18:56:34,369 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-25 18:56:34,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-25 18:56:35,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,055 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:56:35,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 30 [2021-11-25 18:56:35,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,090 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:56:35,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 30 [2021-11-25 18:56:35,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:56:35,125 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 18:56:35,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 32 [2021-11-25 18:56:35,155 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-25 18:56:35,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-11-25 18:56:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:56:37,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:56:38,138 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2021-11-25 18:56:50,810 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.