./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur --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 a5cc7d054134727d17d186899e752bcb9b04f811a63c25a6e1e851147ab3514d --- 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-38b53e6 [2022-11-25 23:51:56,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:51:56,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:51:57,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:51:57,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:51:57,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:51:57,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:51:57,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:51:57,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:51:57,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:51:57,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:51:57,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:51:57,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:51:57,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:51:57,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:51:57,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:51:57,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:51:57,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:51:57,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:51:57,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:51:57,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:51:57,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:51:57,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:51:57,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:51:57,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:51:57,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:51:57,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:51:57,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:51:57,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:51:57,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:51:57,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:51:57,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:51:57,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:51:57,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:51:57,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:51:57,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:51:57,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:51:57,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:51:57,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:51:57,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:51:57,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:51:57,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-25 23:51:57,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:51:57,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:51:57,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:51:57,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:51:57,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:51:57,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:51:57,117 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:51:57,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:51:57,117 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:51:57,118 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:51:57,119 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:51:57,119 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:51:57,119 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:51:57,120 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:51:57,120 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:51:57,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:51:57,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:51:57,121 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:51:57,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:51:57,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:51:57,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:51:57,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:51:57,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:51:57,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:51:57,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:51:57,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:51:57,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:51:57,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:51:57,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:51:57,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:51:57,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:51:57,125 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:51:57,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:51:57,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:51:57,126 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:51:57,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:51:57,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:51:57,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:51:57,127 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_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5cc7d054134727d17d186899e752bcb9b04f811a63c25a6e1e851147ab3514d [2022-11-25 23:51:57,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:51:57,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:51:57,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:51:57,481 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:51:57,481 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:51:57,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i [2022-11-25 23:52:00,546 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:52:01,158 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:52:01,158 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i [2022-11-25 23:52:01,192 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/data/31461331c/6b775484c710443f9c9421df05b329e0/FLAG02ee7c5d7 [2022-11-25 23:52:01,215 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/data/31461331c/6b775484c710443f9c9421df05b329e0 [2022-11-25 23:52:01,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:52:01,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:52:01,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:52:01,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:52:01,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:52:01,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:52:01" (1/1) ... [2022-11-25 23:52:01,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14129122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:01, skipping insertion in model container [2022-11-25 23:52:01,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:52:01" (1/1) ... [2022-11-25 23:52:01,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:52:01,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:52:01,715 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_c0795dfd-341a-410e-aca2-03a7d257e3ab/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i[4500,4513] [2022-11-25 23:52:01,725 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_c0795dfd-341a-410e-aca2-03a7d257e3ab/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i[4560,4573] [2022-11-25 23:52:02,960 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:02,961 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:02,961 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:02,962 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:02,964 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,006 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,012 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,017 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,018 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,118 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:52:03,118 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:52:03,119 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:52:03,124 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:52:03,127 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:52:03,127 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:52:03,396 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:52:03,398 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:52:03,399 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:52:03,400 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:52:03,401 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:52:03,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:52:03,404 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:52:03,405 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:52:03,405 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:52:03,406 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:52:03,407 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:52:03,649 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:52:03,719 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:52:03,745 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:52:03,803 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:52:03,819 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,822 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,885 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:52:03,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:52:03,933 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:52:03,947 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_c0795dfd-341a-410e-aca2-03a7d257e3ab/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i[4500,4513] [2022-11-25 23:52:03,948 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_c0795dfd-341a-410e-aca2-03a7d257e3ab/sv-benchmarks/c/aws-c-common/aws_hash_array_ignore_case_harness.i[4560,4573] [2022-11-25 23:52:03,978 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,979 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,979 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,979 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,980 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,985 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,986 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,987 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,987 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:03,993 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:52:03,994 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:52:03,994 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 23:52:03,997 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 23:52:03,999 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 23:52:03,999 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 23:52:04,018 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 23:52:04,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 23:52:04,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 23:52:04,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 23:52:04,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 23:52:04,021 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 23:52:04,022 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 23:52:04,022 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 23:52:04,023 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 23:52:04,023 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 23:52:04,023 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 23:52:04,042 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 23:52:04,081 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-25 23:52:04,095 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:52:04,119 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-25 23:52:04,131 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:04,132 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 23:52:04,181 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 23:52:04,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:52:04,459 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:52:04,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04 WrapperNode [2022-11-25 23:52:04,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:52:04,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:52:04,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:52:04,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:52:04,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,713 INFO L138 Inliner]: procedures = 690, calls = 2599, calls flagged for inlining = 56, calls inlined = 3, statements flattened = 727 [2022-11-25 23:52:04,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:52:04,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:52:04,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:52:04,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:52:04,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,805 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:52:04,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:52:04,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:52:04,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:52:04,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (1/1) ... [2022-11-25 23:52:04,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:52:04,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:52:04,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:52:04,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:52:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 23:52:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 23:52:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:52:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 23:52:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 23:52:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:52:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:52:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:52:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:52:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_array_ignore_case [2022-11-25 23:52:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_array_ignore_case [2022-11-25 23:52:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 23:52:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 23:52:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-25 23:52:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-25 23:52:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 23:52:04,920 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 23:52:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:52:04,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:52:05,219 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:52:05,222 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:52:06,272 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:52:06,418 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:52:06,418 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:52:06,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:52:06 BoogieIcfgContainer [2022-11-25 23:52:06,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:52:06,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:52:06,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:52:06,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:52:06,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:52:01" (1/3) ... [2022-11-25 23:52:06,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647fd1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:52:06, skipping insertion in model container [2022-11-25 23:52:06,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:52:04" (2/3) ... [2022-11-25 23:52:06,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647fd1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:52:06, skipping insertion in model container [2022-11-25 23:52:06,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:52:06" (3/3) ... [2022-11-25 23:52:06,432 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_array_ignore_case_harness.i [2022-11-25 23:52:06,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:52:06,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:52:06,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:52:06,526 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;@265ba943, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:52:06,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:52:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-25 23:52:06,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 23:52:06,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:06,546 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:52:06,547 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:52:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash -352444336, now seen corresponding path program 1 times [2022-11-25 23:52:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:06,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130605928] [2022-11-25 23:52:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:06,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:52:09,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:09,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130605928] [2022-11-25 23:52:09,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130605928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:52:09,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:52:09,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 23:52:09,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928899575] [2022-11-25 23:52:09,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:52:09,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:52:09,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:52:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:52:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:52:09,188 INFO L87 Difference]: Start difference. First operand has 36 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:52:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:52:09,510 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-11-25 23:52:09,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:52:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 29 [2022-11-25 23:52:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:52:09,521 INFO L225 Difference]: With dead ends: 52 [2022-11-25 23:52:09,521 INFO L226 Difference]: Without dead ends: 33 [2022-11-25 23:52:09,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-25 23:52:09,535 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:52:09,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 147 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:52:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-25 23:52:09,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-25 23:52:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 23:52:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-25 23:52:09,583 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 29 [2022-11-25 23:52:09,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:52:09,585 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-25 23:52:09,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 23:52:09,586 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-25 23:52:09,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-25 23:52:09,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:09,588 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:52:09,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:52:09,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:52:09,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2094445040, now seen corresponding path program 1 times [2022-11-25 23:52:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:09,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812572208] [2022-11-25 23:52:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:09,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 23:52:09,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836996310] [2022-11-25 23:52:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:09,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:52:09,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:52:09,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:52:09,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0795dfd-341a-410e-aca2-03a7d257e3ab/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:52:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:10,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 2331 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 23:52:10,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:52:10,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:52:10,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:52:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:52:10,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:10,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812572208] [2022-11-25 23:52:10,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 23:52:10,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836996310] [2022-11-25 23:52:10,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836996310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:52:10,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1235539552] [2022-11-25 23:52:10,807 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-25 23:52:10,807 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:52:10,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:52:10,815 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:52:10,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:54:07,769 INFO L197 IcfgInterpreter]: Interpreting procedure aws_hash_array_ignore_case with input of size 2474 for LOIs [2022-11-25 23:54:34,440 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 2471 for LOIs [2022-11-25 23:54:41,129 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 50 for LOIs [2022-11-25 23:54:41,135 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 3257 for LOIs [2022-11-25 23:55:34,480 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 3243 for LOIs [2022-11-25 23:55:38,354 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:56:48,960 WARN L233 SmtUtils]: Spent 1.17m on a formula simplification that was a NOOP. DAG size: 3235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:59:20,413 WARN L233 SmtUtils]: Spent 2.51m on a formula simplification. DAG size of input: 3253 DAG size of output: 3248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:02:02,145 WARN L233 SmtUtils]: Spent 2.68m on a formula simplification. DAG size of input: 3257 DAG size of output: 3252 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:04:53,430 WARN L233 SmtUtils]: Spent 2.84m on a formula simplification. DAG size of input: 3259 DAG size of output: 3254 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)