./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 --- 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-dbf71c6-m [2022-10-17 10:10:55,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:10:55,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:10:55,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:10:55,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:10:55,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:10:55,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:10:55,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:10:55,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:10:55,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:10:55,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:10:55,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:10:55,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:10:55,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:10:55,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:10:55,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:10:55,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:10:55,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:10:55,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:10:55,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:10:55,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:10:55,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:10:55,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:10:55,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:10:55,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:10:55,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:10:55,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:10:55,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:10:55,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:10:55,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:10:55,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:10:55,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:10:55,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:10:55,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:10:55,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:10:55,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:10:55,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:10:55,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:10:55,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:10:55,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:10:55,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:10:55,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:10:55,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:10:55,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:10:55,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:10:55,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:10:55,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:10:55,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:10:55,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:10:55,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:10:55,952 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:10:55,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:10:55,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:10:55,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:10:55,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:10:55,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:10:55,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:10:55,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:10:55,954 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:10:55,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:10:55,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:10:55,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:10:55,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:10:55,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:10:55,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:10:55,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:10:55,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:10:55,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:10:55,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:10:55,958 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:10:55,958 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:10:55,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:10:55,959 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_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 [2022-10-17 10:10:56,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:10:56,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:10:56,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:10:56,327 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:10:56,328 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:10:56,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2022-10-17 10:10:56,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/data/25b4a5442/3b08f38c36bd4613a52a72775aa31967/FLAG366e2c6fe [2022-10-17 10:10:57,293 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:10:57,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2022-10-17 10:10:57,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/data/25b4a5442/3b08f38c36bd4613a52a72775aa31967/FLAG366e2c6fe [2022-10-17 10:10:57,774 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/data/25b4a5442/3b08f38c36bd4613a52a72775aa31967 [2022-10-17 10:10:57,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:10:57,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:10:57,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:10:57,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:10:57,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:10:57,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:10:57" (1/1) ... [2022-10-17 10:10:57,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e85a07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:10:57, skipping insertion in model container [2022-10-17 10:10:57,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:10:57" (1/1) ... [2022-10-17 10:10:57,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:10:57,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:10:58,171 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_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2022-10-17 10:10:58,178 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_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2022-10-17 10:10:59,351 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:10:59,449 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,450 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,451 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,454 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,455 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,488 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,488 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,490 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,490 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,492 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,493 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,494 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,494 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:10:59,868 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:10:59,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:10:59,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:10:59,871 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:10:59,872 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:10:59,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:10:59,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:10:59,874 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:10:59,875 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:10:59,876 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:11:00,064 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,071 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:00,176 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:11:00,197 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_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2022-10-17 10:11:00,198 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_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2022-10-17 10:11:00,268 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 10:11:00,300 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,306 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,306 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,307 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,308 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,315 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,319 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,321 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,324 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,328 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,329 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,329 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,329 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,391 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 10:11:00,392 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 10:11:00,392 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 10:11:00,393 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 10:11:00,394 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 10:11:00,395 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 10:11:00,395 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 10:11:00,396 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 10:11:00,396 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 10:11:00,397 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 10:11:00,454 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,459 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 10:11:00,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:11:00,795 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:11:00,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00 WrapperNode [2022-10-17 10:11:00,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:11:00,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:00,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:11:00,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:11:00,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:00,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,010 INFO L138 Inliner]: procedures = 691, calls = 1682, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 656 [2022-10-17 10:11:01,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:11:01,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:11:01,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:11:01,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:11:01,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,134 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:11:01,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:11:01,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:11:01,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:11:01,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (1/1) ... [2022-10-17 10:11:01,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:11:01,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:01,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:11:01,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:11:01,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:11:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-10-17 10:11:01,262 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-10-17 10:11:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-10-17 10:11:01,264 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-10-17 10:11:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-10-17 10:11:01,265 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-10-17 10:11:01,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:11:01,265 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-10-17 10:11:01,266 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-10-17 10:11:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:11:01,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:11:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:11:01,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:11:01,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:11:01,267 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-10-17 10:11:01,267 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-10-17 10:11:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:11:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:11:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 10:11:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 10:11:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-10-17 10:11:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-10-17 10:11:01,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-10-17 10:11:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-10-17 10:11:01,270 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-10-17 10:11:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-10-17 10:11:01,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-10-17 10:11:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-10-17 10:11:01,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:11:01,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:11:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-10-17 10:11:01,271 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-10-17 10:11:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:11:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:11:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:11:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-10-17 10:11:01,272 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-10-17 10:11:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-10-17 10:11:01,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-10-17 10:11:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:11:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-10-17 10:11:01,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-10-17 10:11:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:11:01,647 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:11:01,649 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:11:02,828 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:11:02,844 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:11:02,844 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:11:02,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:02 BoogieIcfgContainer [2022-10-17 10:11:02,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:11:02,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:11:02,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:11:02,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:11:02,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:10:57" (1/3) ... [2022-10-17 10:11:02,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a467396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:02, skipping insertion in model container [2022-10-17 10:11:02,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:11:00" (2/3) ... [2022-10-17 10:11:02,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a467396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:11:02, skipping insertion in model container [2022-10-17 10:11:02,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:11:02" (3/3) ... [2022-10-17 10:11:02,859 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness.i [2022-10-17 10:11:02,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:11:02,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:11:02,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:11:02,984 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=PETRI_NET, 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;@d23edda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:11:02,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:11:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-17 10:11:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:11:03,014 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:03,015 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 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, 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] [2022-10-17 10:11:03,016 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:03,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1489749117, now seen corresponding path program 1 times [2022-10-17 10:11:03,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:03,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167938308] [2022-10-17 10:11:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:03,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:11:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:11:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:11:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:11:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:11:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:11:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:11:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:11:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-17 10:11:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:11:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:11:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:11:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:11:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:11:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:11:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:11:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 10:11:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:11:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:11:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-17 10:11:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-10-17 10:11:04,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:04,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167938308] [2022-10-17 10:11:04,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167938308] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:04,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:04,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:11:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148215668] [2022-10-17 10:11:04,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:04,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:11:04,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:04,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:11:04,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:04,229 INFO L87 Difference]: Start difference. First operand has 180 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-10-17 10:11:04,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:04,848 INFO L93 Difference]: Finished difference Result 374 states and 541 transitions. [2022-10-17 10:11:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:11:04,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2022-10-17 10:11:04,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:04,868 INFO L225 Difference]: With dead ends: 374 [2022-10-17 10:11:04,868 INFO L226 Difference]: Without dead ends: 192 [2022-10-17 10:11:04,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:11:04,883 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 114 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:04,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 285 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:11:04,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-10-17 10:11:04,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 171. [2022-10-17 10:11:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 103 states have internal predecessors, (119), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-17 10:11:04,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 223 transitions. [2022-10-17 10:11:04,984 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 223 transitions. Word has length 124 [2022-10-17 10:11:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:04,985 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 223 transitions. [2022-10-17 10:11:04,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-10-17 10:11:04,986 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 223 transitions. [2022-10-17 10:11:04,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:11:04,996 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:04,996 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 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, 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] [2022-10-17 10:11:04,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:11:04,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:04,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1640985525, now seen corresponding path program 1 times [2022-10-17 10:11:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:04,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736152196] [2022-10-17 10:11:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:04,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:11:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:11:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:11:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:11:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:11:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:11:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:11:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:11:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-17 10:11:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:11:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-17 10:11:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-17 10:11:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-17 10:11:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-17 10:11:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-17 10:11:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-10-17 10:11:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-17 10:11:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-10-17 10:11:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 10:11:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-17 10:11:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-10-17 10:11:05,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:05,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736152196] [2022-10-17 10:11:05,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736152196] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:11:05,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303105574] [2022-10-17 10:11:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:05,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:05,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:05,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:05,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:11:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:06,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:11:06,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:11:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-10-17 10:11:06,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:11:06,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303105574] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:06,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:11:06,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-10-17 10:11:06,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050020327] [2022-10-17 10:11:06,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:06,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:11:06,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:06,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:11:06,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:11:06,474 INFO L87 Difference]: Start difference. First operand 171 states and 223 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-10-17 10:11:06,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:06,823 INFO L93 Difference]: Finished difference Result 315 states and 417 transitions. [2022-10-17 10:11:06,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:11:06,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 124 [2022-10-17 10:11:06,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:06,827 INFO L225 Difference]: With dead ends: 315 [2022-10-17 10:11:06,827 INFO L226 Difference]: Without dead ends: 173 [2022-10-17 10:11:06,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:11:06,829 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 232 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:06,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 625 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:11:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-10-17 10:11:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-10-17 10:11:06,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 105 states have internal predecessors, (120), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (56), 51 states have call predecessors, (56), 51 states have call successors, (56) [2022-10-17 10:11:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2022-10-17 10:11:06,869 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 124 [2022-10-17 10:11:06,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:06,870 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2022-10-17 10:11:06,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-10-17 10:11:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2022-10-17 10:11:06,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-10-17 10:11:06,881 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:06,881 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2022-10-17 10:11:06,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:11:07,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:07,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1623021021, now seen corresponding path program 1 times [2022-10-17 10:11:07,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:07,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011235359] [2022-10-17 10:11:07,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:07,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:07,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:11:07,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221564660] [2022-10-17 10:11:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:07,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:07,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:07,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:07,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:11:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:11:07,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:11:07,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:11:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-10-17 10:11:07,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:11:07,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:11:07,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011235359] [2022-10-17 10:11:07,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:11:07,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221564660] [2022-10-17 10:11:07,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221564660] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:11:07,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:11:07,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:11:07,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050338817] [2022-10-17 10:11:07,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:11:07,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:11:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:11:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:11:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:11:07,927 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-10-17 10:11:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:11:08,275 INFO L93 Difference]: Finished difference Result 283 states and 374 transitions. [2022-10-17 10:11:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:11:08,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 154 [2022-10-17 10:11:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:11:08,282 INFO L225 Difference]: With dead ends: 283 [2022-10-17 10:11:08,282 INFO L226 Difference]: Without dead ends: 173 [2022-10-17 10:11:08,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:11:08,286 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 249 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:11:08,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 748 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:11:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-10-17 10:11:08,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-10-17 10:11:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 105 states have internal predecessors, (120), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-10-17 10:11:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2022-10-17 10:11:08,316 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 154 [2022-10-17 10:11:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:11:08,317 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2022-10-17 10:11:08,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-10-17 10:11:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2022-10-17 10:11:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-10-17 10:11:08,320 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:11:08,320 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-10-17 10:11:08,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:11:08,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:08,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:11:08,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:11:08,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2016135159, now seen corresponding path program 2 times [2022-10-17 10:11:08,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:11:08,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27386442] [2022-10-17 10:11:08,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:11:08,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:11:08,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:11:08,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582633214] [2022-10-17 10:11:08,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:11:08,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:11:08,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:11:08,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:11:08,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_625b3b5b-473e-4a1c-b42e-7cdbe235fa89/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:11:09,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:11:09,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:11:09,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 93 conjunts are in the unsatisfiable core [2022-10-17 10:11:09,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:11:09,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-10-17 10:11:10,457 INFO L356 Elim1Store]: treesize reduction 120, result has 50.2 percent of original size [2022-10-17 10:11:10,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 31 select indices, 31 select index equivalence classes, 435 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 30 case distinctions, treesize of input 156 treesize of output 214 [2022-10-17 10:11:13,112 WARN L712 sPolynomialRelations]: Constructing 1073741824(two to the power of 30 dual juncts.