./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba --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 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 --- 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-b5237d8 [2022-11-22 02:15:30,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:15:30,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:15:30,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:15:30,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:15:30,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:15:30,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:15:30,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:15:30,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:15:30,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:15:30,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:15:30,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:15:30,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:15:30,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:15:30,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:15:30,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:15:30,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:15:30,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:15:30,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:15:30,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:15:30,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:15:30,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:15:30,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:15:30,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:15:30,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:15:30,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:15:30,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:15:30,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:15:30,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:15:30,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:15:30,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:15:30,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:15:30,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:15:30,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:15:30,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:15:30,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:15:30,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:15:30,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:15:30,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:15:30,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:15:30,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:15:30,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:15:30,412 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:15:30,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:15:30,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:15:30,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:15:30,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:15:30,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:15:30,414 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:15:30,414 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:15:30,414 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:15:30,415 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:15:30,416 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:15:30,416 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:15:30,416 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:15:30,416 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:15:30,416 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:15:30,417 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:15:30,417 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:15:30,417 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:15:30,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:15:30,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:15:30,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:15:30,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:15:30,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:15:30,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:15:30,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:15:30,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:15:30,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:15:30,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:15:30,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:15:30,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:15:30,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:15:30,420 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:15:30,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:15:30,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:15:30,421 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:15:30,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:15:30,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:15:30,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:15:30,421 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_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 [2022-11-22 02:15:30,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:15:30,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:15:30,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:15:30,800 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:15:30,801 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:15:30,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2022-11-22 02:15:33,814 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:15:34,386 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:15:34,388 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2022-11-22 02:15:34,422 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/data/ed19bf3a8/9cb3582fc6a04481ac25974da03bfc5a/FLAG6f6d80c18 [2022-11-22 02:15:34,443 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/data/ed19bf3a8/9cb3582fc6a04481ac25974da03bfc5a [2022-11-22 02:15:34,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:15:34,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:15:34,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:15:34,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:15:34,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:15:34,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:15:34" (1/1) ... [2022-11-22 02:15:34,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527f4e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:34, skipping insertion in model container [2022-11-22 02:15:34,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:15:34" (1/1) ... [2022-11-22 02:15:34,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:15:34,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:15:34,840 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_3b5ea652-c752-4d3a-8f4e-434038aa2260/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2022-11-22 02:15:34,852 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_3b5ea652-c752-4d3a-8f4e-434038aa2260/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2022-11-22 02:15:35,911 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:15:36,013 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,013 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,014 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,015 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,016 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,028 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,028 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,030 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,031 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,033 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,034 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,035 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,035 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,473 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:15:36,475 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:15:36,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:15:36,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:15:36,484 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:15:36,485 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:15:36,486 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:15:36,488 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:15:36,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:15:36,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:15:36,697 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,703 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,709 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,723 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:15:36,852 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:15:36,881 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_3b5ea652-c752-4d3a-8f4e-434038aa2260/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2022-11-22 02:15:36,888 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_3b5ea652-c752-4d3a-8f4e-434038aa2260/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2022-11-22 02:15:36,954 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 02:15:36,969 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,978 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,981 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,981 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,983 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,990 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,991 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,992 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,992 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,993 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,994 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,994 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:36,994 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:37,032 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 02:15:37,033 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 02:15:37,034 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 02:15:37,035 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 02:15:37,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 02:15:37,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 02:15:37,037 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 02:15:37,037 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 02:15:37,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 02:15:37,039 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 02:15:37,092 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:37,092 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:37,093 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:37,097 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 02:15:37,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:15:37,400 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:15:37,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37 WrapperNode [2022-11-22 02:15:37,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:15:37,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:15:37,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:15:37,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:15:37,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,592 INFO L138 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 648 [2022-11-22 02:15:37,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:15:37,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:15:37,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:15:37,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:15:37,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,684 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:15:37,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:15:37,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:15:37,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:15:37,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (1/1) ... [2022-11-22 02:15:37,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:15:37,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:15:37,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:15:37,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:15:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:15:37,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-22 02:15:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-22 02:15:37,809 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-22 02:15:37,809 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-22 02:15:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-22 02:15:37,810 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-22 02:15:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:15:37,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-22 02:15:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-22 02:15:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:15:37,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:15:37,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:15:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:15:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:15:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-22 02:15:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-22 02:15:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:15:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:15:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-22 02:15:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-22 02:15:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-22 02:15:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-22 02:15:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-22 02:15:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-22 02:15:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:15:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:15:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-22 02:15:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-22 02:15:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:15:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:15:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:15:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-22 02:15:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-22 02:15:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-22 02:15:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-22 02:15:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-22 02:15:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-22 02:15:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:15:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-22 02:15:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-22 02:15:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:15:38,192 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:15:38,195 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:15:39,345 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:15:39,529 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:15:39,529 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:15:39,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:15:39 BoogieIcfgContainer [2022-11-22 02:15:39,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:15:39,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:15:39,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:15:39,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:15:39,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:15:34" (1/3) ... [2022-11-22 02:15:39,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d5c4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:15:39, skipping insertion in model container [2022-11-22 02:15:39,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:37" (2/3) ... [2022-11-22 02:15:39,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d5c4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:15:39, skipping insertion in model container [2022-11-22 02:15:39,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:15:39" (3/3) ... [2022-11-22 02:15:39,549 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness.i [2022-11-22 02:15:39,569 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:15:39,570 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:15:39,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:15:39,652 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;@4a6d9af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:15:39,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:15:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 74 states have internal predecessors, (83), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-22 02:15:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 02:15:39,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:15:39,679 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:15:39,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:15:39,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:15:39,687 INFO L85 PathProgramCache]: Analyzing trace with hash -333435140, now seen corresponding path program 1 times [2022-11-22 02:15:39,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:15:39,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197552205] [2022-11-22 02:15:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:39,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:15:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 02:15:40,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:15:40,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197552205] [2022-11-22 02:15:40,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197552205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:15:40,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789948328] [2022-11-22 02:15:40,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:40,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:15:40,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:15:40,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:15:40,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:15:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:41,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:15:41,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:15:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:15:41,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:15:41,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789948328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:15:41,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:15:41,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-22 02:15:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092214726] [2022-11-22 02:15:41,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:15:41,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:15:41,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:15:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:15:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:15:41,618 INFO L87 Difference]: Start difference. First operand has 151 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 74 states have internal predecessors, (83), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:15:42,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:15:42,084 INFO L93 Difference]: Finished difference Result 273 states and 398 transitions. [2022-11-22 02:15:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:15:42,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 54 [2022-11-22 02:15:42,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:15:42,102 INFO L225 Difference]: With dead ends: 273 [2022-11-22 02:15:42,103 INFO L226 Difference]: Without dead ends: 151 [2022-11-22 02:15:42,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:15:42,117 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 31 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:15:42,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 582 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:15:42,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-22 02:15:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-22 02:15:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 75 states have internal predecessors, (82), 61 states have call successors, (61), 15 states have call predecessors, (61), 16 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2022-11-22 02:15:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 211 transitions. [2022-11-22 02:15:42,228 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 211 transitions. Word has length 54 [2022-11-22 02:15:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:15:42,230 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 211 transitions. [2022-11-22 02:15:42,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-22 02:15:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 211 transitions. [2022-11-22 02:15:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:15:42,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:15:42,236 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:15:42,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:15:42,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-22 02:15:42,445 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:15:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:15:42,446 INFO L85 PathProgramCache]: Analyzing trace with hash 211094557, now seen corresponding path program 1 times [2022-11-22 02:15:42,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:15:42,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795791063] [2022-11-22 02:15:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:42,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:15:42,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:15:42,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387370135] [2022-11-22 02:15:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:42,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:15:42,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:15:42,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:15:42,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:15:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:43,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 02:15:43,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:15:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 02:15:43,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:15:43,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:15:43,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795791063] [2022-11-22 02:15:43,214 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:15:43,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387370135] [2022-11-22 02:15:43,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387370135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:15:43,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:15:43,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:15:43,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235591065] [2022-11-22 02:15:43,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:15:43,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:15:43,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:15:43,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:15:43,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:15:43,218 INFO L87 Difference]: Start difference. First operand 151 states and 211 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-22 02:15:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:15:43,882 INFO L93 Difference]: Finished difference Result 278 states and 397 transitions. [2022-11-22 02:15:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:15:43,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 63 [2022-11-22 02:15:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:15:43,886 INFO L225 Difference]: With dead ends: 278 [2022-11-22 02:15:43,886 INFO L226 Difference]: Without dead ends: 161 [2022-11-22 02:15:43,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:15:43,896 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 36 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:15:43,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 889 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:15:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-22 02:15:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-11-22 02:15:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 79 states have internal predecessors, (86), 66 states have call successors, (66), 16 states have call predecessors, (66), 17 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2022-11-22 02:15:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 225 transitions. [2022-11-22 02:15:43,934 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 225 transitions. Word has length 63 [2022-11-22 02:15:43,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:15:43,935 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 225 transitions. [2022-11-22 02:15:43,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-22 02:15:43,935 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 225 transitions. [2022-11-22 02:15:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:15:43,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:15:43,944 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:15:43,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:15:44,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-22 02:15:44,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:15:44,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:15:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1014181917, now seen corresponding path program 1 times [2022-11-22 02:15:44,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:15:44,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667181427] [2022-11-22 02:15:44,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:44,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:15:44,244 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:15:44,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1466202803] [2022-11-22 02:15:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:44,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:15:44,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:15:44,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:15:44,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b5ea652-c752-4d3a-8f4e-434038aa2260/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:15:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:44,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2381 conjuncts, 292 conjunts are in the unsatisfiable core [2022-11-22 02:15:44,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:15:44,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 02:15:46,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 02:15:46,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-22 02:19:02,920 WARN L233 SmtUtils]: Spent 3.25m on a formula simplification. DAG size of input: 109 DAG size of output: 62 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 02:19:02,921 INFO L321 Elim1Store]: treesize reduction 202, result has 38.6 percent of original size [2022-11-22 02:19:02,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 196 treesize of output 337 [2022-11-22 02:19:02,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:02,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:02,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:02,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 216 [2022-11-22 02:19:03,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:19:03,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 153