./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh --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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- 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-2329fc7 [2022-12-14 04:44:05,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 04:44:05,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 04:44:05,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 04:44:05,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 04:44:05,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 04:44:05,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 04:44:05,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 04:44:05,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 04:44:05,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 04:44:05,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 04:44:05,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 04:44:05,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 04:44:05,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 04:44:05,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 04:44:05,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 04:44:05,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 04:44:05,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 04:44:05,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 04:44:05,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 04:44:05,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 04:44:05,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 04:44:05,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 04:44:05,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 04:44:05,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 04:44:05,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 04:44:05,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 04:44:05,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 04:44:05,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 04:44:05,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 04:44:05,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 04:44:05,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 04:44:05,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 04:44:05,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 04:44:05,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 04:44:05,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 04:44:05,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 04:44:05,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 04:44:05,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 04:44:05,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 04:44:05,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 04:44:05,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 04:44:05,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 04:44:05,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 04:44:05,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 04:44:05,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 04:44:05,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 04:44:05,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 04:44:05,969 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 04:44:05,969 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 04:44:05,969 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 04:44:05,969 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 04:44:05,969 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 04:44:05,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 04:44:05,970 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 04:44:05,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 04:44:05,970 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 04:44:05,970 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 04:44:05,970 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 04:44:05,971 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 04:44:05,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 04:44:05,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 04:44:05,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 04:44:05,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 04:44:05,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 04:44:05,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 04:44:05,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 04:44:05,973 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 04:44:05,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 04:44:05,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 04:44:05,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 04:44:05,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:44:05,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 04:44:05,974 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 04:44:05,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 04:44:05,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 04:44:05,974 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 04:44:05,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 04:44:05,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 04:44:05,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 04:44:05,975 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_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2022-12-14 04:44:06,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 04:44:06,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 04:44:06,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 04:44:06,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 04:44:06,192 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 04:44:06,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-12-14 04:44:08,786 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 04:44:09,071 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 04:44:09,071 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-12-14 04:44:09,090 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/data/81dd2e501/c1de3b0adaf94bf281064896923af7bc/FLAGebeecae14 [2022-12-14 04:44:09,101 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/data/81dd2e501/c1de3b0adaf94bf281064896923af7bc [2022-12-14 04:44:09,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 04:44:09,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 04:44:09,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 04:44:09,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 04:44:09,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 04:44:09,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:44:09" (1/1) ... [2022-12-14 04:44:09,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729e1d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:09, skipping insertion in model container [2022-12-14 04:44:09,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:44:09" (1/1) ... [2022-12-14 04:44:09,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 04:44:09,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 04:44:09,410 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_da73fb05-7aeb-472e-84f4-9d64bc1db0af/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-12-14 04:44:09,417 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_da73fb05-7aeb-472e-84f4-9d64bc1db0af/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-12-14 04:44:10,104 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,110 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,110 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,111 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,112 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,113 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,116 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,126 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,127 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,127 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,129 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,129 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,207 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:44:10,207 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:44:10,208 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:44:10,211 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:44:10,213 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:44:10,213 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:44:10,477 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:44:10,478 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:44:10,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:44:10,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:44:10,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:44:10,481 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:44:10,481 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:44:10,482 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:44:10,482 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:44:10,483 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:44:10,483 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:44:10,624 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:44:10,640 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,641 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,647 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,653 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,655 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 04:44:10,661 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:44:10,668 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,672 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,673 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,673 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,681 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:44:10,687 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,687 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,690 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,696 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,726 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:44:10,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:10,759 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 04:44:10,767 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_da73fb05-7aeb-472e-84f4-9d64bc1db0af/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-12-14 04:44:10,768 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_da73fb05-7aeb-472e-84f4-9d64bc1db0af/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-12-14 04:44:10,795 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,797 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,797 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,798 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,798 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,799 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,800 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,805 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,805 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,805 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,806 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,806 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,812 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:44:10,813 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:44:10,813 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 04:44:10,816 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 04:44:10,817 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 04:44:10,817 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 04:44:10,835 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 04:44:10,835 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 04:44:10,836 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 04:44:10,837 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 04:44:10,837 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 04:44:10,838 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 04:44:10,838 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 04:44:10,839 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 04:44:10,839 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 04:44:10,839 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 04:44:10,840 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 04:44:10,857 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 04:44:10,867 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,868 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,870 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,876 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,878 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 04:44:10,883 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:44:10,889 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,892 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,893 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,894 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,899 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 04:44:10,905 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,905 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 04:44:10,909 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,914 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-12-14 04:44:10,928 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 04:44:10,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 04:44:11,078 INFO L208 MainTranslator]: Completed translation [2022-12-14 04:44:11,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11 WrapperNode [2022-12-14 04:44:11,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 04:44:11,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 04:44:11,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 04:44:11,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 04:44:11,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,196 INFO L138 Inliner]: procedures = 691, calls = 2636, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1064 [2022-12-14 04:44:11,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 04:44:11,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 04:44:11,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 04:44:11,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 04:44:11,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 04:44:11,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 04:44:11,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 04:44:11,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 04:44:11,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (1/1) ... [2022-12-14 04:44:11,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 04:44:11,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:44:11,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 04:44:11,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 04:44:11,347 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-14 04:44:11,347 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-14 04:44:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-12-14 04:44:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-12-14 04:44:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 04:44:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 04:44:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 04:44:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-12-14 04:44:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-12-14 04:44:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 04:44:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-14 04:44:11,348 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-14 04:44:11,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 04:44:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 04:44:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 04:44:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 04:44:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 04:44:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-12-14 04:44:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-12-14 04:44:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 04:44:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 04:44:11,349 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 04:44:11,349 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 04:44:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-12-14 04:44:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-12-14 04:44:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-12-14 04:44:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-12-14 04:44:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 04:44:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 04:44:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-12-14 04:44:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-12-14 04:44:11,350 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-12-14 04:44:11,350 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-12-14 04:44:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 04:44:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-12-14 04:44:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-12-14 04:44:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 04:44:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 04:44:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 04:44:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 04:44:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-12-14 04:44:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-12-14 04:44:11,351 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-12-14 04:44:11,351 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-12-14 04:44:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 04:44:11,352 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 04:44:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 04:44:11,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 04:44:11,571 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 04:44:11,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 04:44:12,543 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 04:44:12,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 04:44:12,768 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 04:44:12,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:44:12 BoogieIcfgContainer [2022-12-14 04:44:12,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 04:44:12,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 04:44:12,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 04:44:12,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 04:44:12,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:44:09" (1/3) ... [2022-12-14 04:44:12,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ced7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:44:12, skipping insertion in model container [2022-12-14 04:44:12,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:44:11" (2/3) ... [2022-12-14 04:44:12,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ced7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:44:12, skipping insertion in model container [2022-12-14 04:44:12,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:44:12" (3/3) ... [2022-12-14 04:44:12,779 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2022-12-14 04:44:12,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 04:44:12,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 04:44:12,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 04:44:12,853 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;@221e61df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 04:44:12,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 04:44:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-12-14 04:44:12,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 04:44:12,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:12,865 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 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] [2022-12-14 04:44:12,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:44:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:12,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1911212402, now seen corresponding path program 1 times [2022-12-14 04:44:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:44:12,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698013027] [2022-12-14 04:44:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:44:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 04:44:13,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:44:13,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698013027] [2022-12-14 04:44:13,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698013027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 04:44:13,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 04:44:13,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 04:44:13,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337626020] [2022-12-14 04:44:13,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 04:44:13,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 04:44:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 04:44:13,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 04:44:13,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 04:44:13,281 INFO L87 Difference]: Start difference. First operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-14 04:44:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 04:44:13,408 INFO L93 Difference]: Finished difference Result 363 states and 514 transitions. [2022-12-14 04:44:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 04:44:13,410 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 55 [2022-12-14 04:44:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 04:44:13,417 INFO L225 Difference]: With dead ends: 363 [2022-12-14 04:44:13,417 INFO L226 Difference]: Without dead ends: 192 [2022-12-14 04:44:13,420 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 [2022-12-14 04:44:13,422 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 04:44:13,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 04:44:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-12-14 04:44:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-12-14 04:44:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-12-14 04:44:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 262 transitions. [2022-12-14 04:44:13,479 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 262 transitions. Word has length 55 [2022-12-14 04:44:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 04:44:13,480 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 262 transitions. [2022-12-14 04:44:13,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-14 04:44:13,481 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 262 transitions. [2022-12-14 04:44:13,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 04:44:13,484 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 04:44:13,485 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 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] [2022-12-14 04:44:13,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 04:44:13,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 04:44:13,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 04:44:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1035300388, now seen corresponding path program 1 times [2022-12-14 04:44:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 04:44:13,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081941586] [2022-12-14 04:44:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 04:44:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 04:44:18,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 04:44:18,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081941586] [2022-12-14 04:44:18,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081941586] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 04:44:18,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537996552] [2022-12-14 04:44:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 04:44:18,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 04:44:18,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 04:44:18,445 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 04:44:18,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da73fb05-7aeb-472e-84f4-9d64bc1db0af/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 04:44:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 04:44:18,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-14 04:44:18,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 04:44:19,149 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 6 treesize of output 5 [2022-12-14 04:44:19,153 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 [2022-12-14 04:44:19,158 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 [2022-12-14 04:44:20,984 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-14 04:44:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 04:44:21,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 04:44:22,116 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-12-14 04:44:32,802 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.