./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P --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 ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:24:47,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:24:47,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:24:48,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:24:48,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:24:48,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:24:48,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:24:48,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:24:48,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:24:48,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:24:48,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:24:48,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:24:48,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:24:48,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:24:48,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:24:48,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:24:48,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:24:48,089 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:24:48,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:24:48,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:24:48,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:24:48,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:24:48,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:24:48,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:24:48,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:24:48,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:24:48,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:24:48,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:24:48,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:24:48,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:24:48,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:24:48,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:24:48,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:24:48,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:24:48,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:24:48,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:24:48,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:24:48,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:24:48,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:24:48,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:24:48,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:24:48,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:24:48,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:24:48,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:24:48,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:24:48,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:24:48,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:24:48,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:24:48,197 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:24:48,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:24:48,197 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:24:48,197 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:24:48,199 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:24:48,199 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:24:48,199 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:24:48,199 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:24:48,200 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:24:48,200 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:24:48,200 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:24:48,200 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:24:48,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:24:48,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:24:48,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:24:48,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:24:48,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:24:48,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:24:48,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:24:48,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:24:48,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:24:48,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:24:48,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:24:48,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:24:48,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:24:48,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:24:48,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:24:48,207 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:24:48,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:24:48,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:24:48,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:24:48,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:24:48,208 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffbf3b1479afd9aaa2ec45fcd2782998a39316f97238379433376f7ba5094eb5 [2021-11-21 00:24:48,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:24:48,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:24:48,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:24:48,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:24:48,604 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:24:48,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2021-11-21 00:24:48,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/data/071504136/629e000cc7624b3daf68fece79ca1ce0/FLAG9e9eb69b5 [2021-11-21 00:24:49,678 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:24:49,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i [2021-11-21 00:24:49,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/data/071504136/629e000cc7624b3daf68fece79ca1ce0/FLAG9e9eb69b5 [2021-11-21 00:24:50,101 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/data/071504136/629e000cc7624b3daf68fece79ca1ce0 [2021-11-21 00:24:50,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:24:50,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:24:50,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:24:50,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:24:50,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:24:50,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:24:50" (1/1) ... [2021-11-21 00:24:50,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376d946f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:50, skipping insertion in model container [2021-11-21 00:24:50,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:24:50" (1/1) ... [2021-11-21 00:24:50,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:24:50,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:24:50,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4501,4514] [2021-11-21 00:24:50,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4561,4574] [2021-11-21 00:24:51,819 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:24:51,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,943 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,944 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,946 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,963 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,966 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,969 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,970 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:51,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,406 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:24:52,407 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:24:52,409 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:24:52,410 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:24:52,412 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:24:52,413 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:24:52,413 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:24:52,414 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:24:52,416 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:24:52,417 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:24:52,556 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:24:52,673 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:24:52,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4501,4514] [2021-11-21 00:24:52,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/sv-benchmarks/c/aws-c-common/aws_array_list_init_dynamic_harness.i[4561,4574] [2021-11-21 00:24:52,730 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:24:52,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,751 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,859 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:24:52,860 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:24:52,861 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:24:52,863 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:24:52,864 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:24:52,865 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:24:52,866 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:24:52,866 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:24:52,867 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:24:52,868 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:24:52,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:52,933 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:24:53,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:24:53,355 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:24:53,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53 WrapperNode [2021-11-21 00:24:53,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:24:53,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:24:53,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:24:53,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:24:53,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,630 INFO L137 Inliner]: procedures = 690, calls = 1561, calls flagged for inlining = 47, calls inlined = 6, statements flattened = 595 [2021-11-21 00:24:53,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:24:53,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:24:53,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:24:53,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:24:53,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:24:53,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:24:53,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:24:53,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:24:53,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (1/1) ... [2021-11-21 00:24:53,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:24:53,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:24:53,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:24:53,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:24:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-21 00:24:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-21 00:24:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:24:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-21 00:24:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-21 00:24:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 00:24:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 00:24:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-21 00:24:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-21 00:24:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:24:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 00:24:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 00:24:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:24:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:24:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:24:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:24:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:24:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:24:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:24:53,867 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 00:24:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 00:24:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 00:24:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 00:24:53,868 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-21 00:24:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-21 00:24:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:24:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:24:53,869 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:24:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:24:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-21 00:24:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-21 00:24:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:24:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:24:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:24:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 00:24:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 00:24:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 00:24:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 00:24:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:24:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:24:54,299 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:24:54,301 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:24:55,497 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:24:55,608 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:24:55,608 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 00:24:55,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:55 BoogieIcfgContainer [2021-11-21 00:24:55,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:24:55,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:24:55,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:24:55,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:24:55,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:24:50" (1/3) ... [2021-11-21 00:24:55,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3a9ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:24:55, skipping insertion in model container [2021-11-21 00:24:55,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:24:53" (2/3) ... [2021-11-21 00:24:55,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3a9ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:24:55, skipping insertion in model container [2021-11-21 00:24:55,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:24:55" (3/3) ... [2021-11-21 00:24:55,622 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_init_dynamic_harness.i [2021-11-21 00:24:55,628 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:24:55,629 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:24:55,689 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:24:55,697 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:24:55,697 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:24:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 63 states have internal predecessors, (76), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-21 00:24:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-21 00:24:55,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:55,731 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:24:55,732 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:24:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1435546941, now seen corresponding path program 1 times [2021-11-21 00:24:55,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:55,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563603211] [2021-11-21 00:24:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:55,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:56,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:56,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563603211] [2021-11-21 00:24:56,279 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-21 00:24:56,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212132255] [2021-11-21 00:24:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:56,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:24:56,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:24:56,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:24:56,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:24:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:56,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 00:24:56,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:24:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 00:24:57,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:24:57,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212132255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:57,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:57,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:24:57,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945727356] [2021-11-21 00:24:57,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:57,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:24:57,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:24:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:24:57,078 INFO L87 Difference]: Start difference. First operand has 111 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 63 states have internal predecessors, (76), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 00:24:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:57,359 INFO L93 Difference]: Finished difference Result 213 states and 282 transitions. [2021-11-21 00:24:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:24:57,362 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 39 [2021-11-21 00:24:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:57,377 INFO L225 Difference]: With dead ends: 213 [2021-11-21 00:24:57,378 INFO L226 Difference]: Without dead ends: 107 [2021-11-21 00:24:57,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:24:57,393 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:57,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:24:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-21 00:24:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-21 00:24:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 58 states have (on average 1.206896551724138) internal successors, (70), 60 states have internal predecessors, (70), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-21 00:24:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 136 transitions. [2021-11-21 00:24:57,501 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 136 transitions. Word has length 39 [2021-11-21 00:24:57,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:57,503 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 136 transitions. [2021-11-21 00:24:57,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-21 00:24:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 136 transitions. [2021-11-21 00:24:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-21 00:24:57,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:57,509 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-21 00:24:57,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:24:57,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-21 00:24:57,723 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:24:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1093508787, now seen corresponding path program 1 times [2021-11-21 00:24:57,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:57,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733604917] [2021-11-21 00:24:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:57,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:57,853 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:24:57,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392569423] [2021-11-21 00:24:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:57,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:24:57,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:24:57,857 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:24:57,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:24:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:24:58,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:24:58,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:24:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 00:24:58,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:24:58,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:24:58,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733604917] [2021-11-21 00:24:58,623 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:24:58,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392569423] [2021-11-21 00:24:58,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392569423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:24:58,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:24:58,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:24:58,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851077277] [2021-11-21 00:24:58,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:24:58,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:24:58,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:24:58,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:24:58,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:24:58,628 INFO L87 Difference]: Start difference. First operand 107 states and 136 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 00:24:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:24:59,268 INFO L93 Difference]: Finished difference Result 203 states and 255 transitions. [2021-11-21 00:24:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:24:59,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 44 [2021-11-21 00:24:59,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:24:59,272 INFO L225 Difference]: With dead ends: 203 [2021-11-21 00:24:59,272 INFO L226 Difference]: Without dead ends: 108 [2021-11-21 00:24:59,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:24:59,276 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 1 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:24:59,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 355 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 00:24:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-21 00:24:59,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-11-21 00:24:59,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 61 states have internal predecessors, (71), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-21 00:24:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 137 transitions. [2021-11-21 00:24:59,296 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 137 transitions. Word has length 44 [2021-11-21 00:24:59,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:24:59,296 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 137 transitions. [2021-11-21 00:24:59,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-21 00:24:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 137 transitions. [2021-11-21 00:24:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-21 00:24:59,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:24:59,300 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-21 00:24:59,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:24:59,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-21 00:24:59,526 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:24:59,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:24:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1835553265, now seen corresponding path program 1 times [2021-11-21 00:24:59,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:24:59,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292332049] [2021-11-21 00:24:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:59,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:24:59,588 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:24:59,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256875153] [2021-11-21 00:24:59,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:24:59,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:24:59,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:24:59,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:24:59,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21cf0640-89f3-42ae-a1c1-466b051ab48a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:25:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:25:00,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:25:00,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:25:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 00:25:00,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:25:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 00:25:00,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:25:00,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292332049] [2021-11-21 00:25:00,420 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:25:00,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256875153] [2021-11-21 00:25:00,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256875153] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:25:00,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2082365574] [2021-11-21 00:25:00,455 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2021-11-21 00:25:00,456 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:25:00,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:25:00,468 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:25:00,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:25:07,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:25:07,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:25:07,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:25:08,011 INFO L244 Elim1Store]: Index analysis took 481 ms [2021-11-21 00:25:52,804 WARN L227 SmtUtils]: Spent 44.66s on a formula simplification. DAG size of input: 2139 DAG size of output: 1167 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:25:52,811 INFO L354 Elim1Store]: treesize reduction 3492, result has 33.3 percent of original size [2021-11-21 00:25:52,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19507 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 388 case distinctions, treesize of input 1002 treesize of output 2369 [2021-11-21 00:26:18,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:26:18,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:26:18,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:26:18,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19504 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 992 treesize of output 1582