./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF --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 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:32:16,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:32:16,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:32:16,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:32:16,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:32:16,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:32:16,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:32:16,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:32:16,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:32:16,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:32:16,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:32:16,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:32:16,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:32:16,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:32:16,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:32:16,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:32:16,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:32:16,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:32:16,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:32:16,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:32:16,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:32:16,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:32:16,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:32:16,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:32:16,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:32:16,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:32:16,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:32:16,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:32:16,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:32:16,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:32:16,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:32:16,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:32:16,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:32:16,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:32:16,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:32:16,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:32:16,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:32:16,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:32:16,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:32:16,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:32:16,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:32:16,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 05:32:16,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:32:16,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:32:16,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:32:16,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:32:16,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:32:16,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:32:16,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:32:16,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:32:16,304 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:32:16,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:32:16,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:32:16,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:32:16,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:32:16,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:32:16,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:32:16,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:32:16,306 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:32:16,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:32:16,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:32:16,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:32:16,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:32:16,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:32:16,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:32:16,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:32:16,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:32:16,308 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:32:16,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:32:16,309 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:32:16,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:32:16,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:32:16,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:32:16,310 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_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2021-11-20 05:32:16,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:32:16,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:32:16,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:32:16,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:32:16,605 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:32:16,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-11-20 05:32:16,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/data/aae4662ed/55971d47eb7d437db3f4d1dfb547f9af/FLAG3caf4c7fa [2021-11-20 05:32:17,548 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:32:17,548 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-11-20 05:32:17,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/data/aae4662ed/55971d47eb7d437db3f4d1dfb547f9af/FLAG3caf4c7fa [2021-11-20 05:32:18,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/data/aae4662ed/55971d47eb7d437db3f4d1dfb547f9af [2021-11-20 05:32:18,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:32:18,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:32:18,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:18,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:32:18,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:32:18,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42330520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:18, skipping insertion in model container [2021-11-20 05:32:18,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:32:18" (1/1) ... [2021-11-20 05:32:18,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:32:18,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:32:18,513 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_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2021-11-20 05:32:18,522 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_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2021-11-20 05:32:19,471 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 05:32:19,565 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,567 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,568 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,582 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,583 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,585 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,585 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,587 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,588 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,589 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,590 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:19,930 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 05:32:19,931 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 05:32:19,933 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 05:32:19,934 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 05:32:19,936 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 05:32:19,936 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 05:32:19,952 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 05:32:19,953 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 05:32:19,954 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 05:32:19,955 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 05:32:20,188 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,202 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:20,324 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:32:20,338 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_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2021-11-20 05:32:20,339 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_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2021-11-20 05:32:20,380 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 05:32:20,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,408 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,411 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,427 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,482 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 05:32:20,485 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 05:32:20,487 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 05:32:20,488 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 05:32:20,493 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 05:32:20,494 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 05:32:20,495 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 05:32:20,497 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 05:32:20,498 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 05:32:20,499 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 05:32:20,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:32:20,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:32:20,965 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:32:20,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20 WrapperNode [2021-11-20 05:32:20,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:32:20,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:32:20,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:32:20,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:32:20,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,200 INFO L137 Inliner]: procedures = 691, calls = 1700, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 616 [2021-11-20 05:32:21,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:32:21,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:32:21,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:32:21,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:32:21,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:32:21,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:32:21,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:32:21,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:32:21,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (1/1) ... [2021-11-20 05:32:21,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:32:21,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:21,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:32:21,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:32:21,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:32:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 05:32:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 05:32:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 05:32:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 05:32:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 05:32:21,406 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 05:32:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:32:21,406 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 05:32:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 05:32:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:32:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:32:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:32:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:32:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:32:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:32:21,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:32:21,407 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 05:32:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 05:32:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-20 05:32:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-20 05:32:21,408 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 05:32:21,408 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 05:32:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 05:32:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 05:32:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 05:32:21,409 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 05:32:21,409 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-20 05:32:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-20 05:32:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:32:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:32:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:32:21,410 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 05:32:21,410 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 05:32:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 05:32:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 05:32:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:32:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-20 05:32:21,411 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-20 05:32:21,411 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-20 05:32:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-20 05:32:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 05:32:21,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 05:32:21,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:32:21,750 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:32:21,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:32:22,971 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:32:22,979 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:32:22,980 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 05:32:22,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:22 BoogieIcfgContainer [2021-11-20 05:32:22,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:32:22,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:32:22,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:32:22,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:32:22,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:32:18" (1/3) ... [2021-11-20 05:32:22,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3f38c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:32:22, skipping insertion in model container [2021-11-20 05:32:22,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:32:20" (2/3) ... [2021-11-20 05:32:22,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3f38c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:32:22, skipping insertion in model container [2021-11-20 05:32:22,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:32:22" (3/3) ... [2021-11-20 05:32:22,990 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2021-11-20 05:32:22,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:32:22,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:32:23,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:32:23,054 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:32:23,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:32:23,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-11-20 05:32:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-20 05:32:23,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:23,091 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:23,091 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:32:23,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:23,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1276829709, now seen corresponding path program 1 times [2021-11-20 05:32:23,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:23,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751436674] [2021-11-20 05:32:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:23,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:23,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:32:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:32:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:32:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:32:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:23,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:32:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 05:32:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:23,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 05:32:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 05:32:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 05:32:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 05:32:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:32:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:24,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 05:32:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 05:32:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-20 05:32:24,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:24,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751436674] [2021-11-20 05:32:24,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751436674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:24,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:24,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:32:24,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718232294] [2021-11-20 05:32:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:24,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:32:24,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:24,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:32:24,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:24,146 INFO L87 Difference]: Start difference. First operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:32:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:24,854 INFO L93 Difference]: Finished difference Result 364 states and 532 transitions. [2021-11-20 05:32:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:32:24,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2021-11-20 05:32:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:24,884 INFO L225 Difference]: With dead ends: 364 [2021-11-20 05:32:24,884 INFO L226 Difference]: Without dead ends: 197 [2021-11-20 05:32:24,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:32:24,894 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 111 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:24,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 243 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:32:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-20 05:32:25,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 164. [2021-11-20 05:32:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-20 05:32:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2021-11-20 05:32:25,022 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 84 [2021-11-20 05:32:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:25,023 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2021-11-20 05:32:25,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-20 05:32:25,031 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2021-11-20 05:32:25,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-20 05:32:25,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:25,037 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:25,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:32:25,038 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:32:25,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1354789231, now seen corresponding path program 1 times [2021-11-20 05:32:25,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:25,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906684999] [2021-11-20 05:32:25,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:25,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:32:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:32:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:32:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 05:32:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:32:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 05:32:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 05:32:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 05:32:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 05:32:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 05:32:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:32:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 05:32:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 05:32:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-20 05:32:25,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:25,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906684999] [2021-11-20 05:32:25,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906684999] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:32:25,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527473708] [2021-11-20 05:32:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:25,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:25,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:25,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:25,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:32:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:25,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 2105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:32:25,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-20 05:32:26,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:26,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527473708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:26,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:32:26,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-11-20 05:32:26,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122691560] [2021-11-20 05:32:26,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:26,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:32:26,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:26,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:32:26,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:32:26,257 INFO L87 Difference]: Start difference. First operand 164 states and 212 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:32:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:26,592 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2021-11-20 05:32:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:32:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2021-11-20 05:32:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:26,608 INFO L225 Difference]: With dead ends: 293 [2021-11-20 05:32:26,609 INFO L226 Difference]: Without dead ends: 166 [2021-11-20 05:32:26,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:32:26,617 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 223 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:26,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 639 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:32:26,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-20 05:32:26,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-20 05:32:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2021-11-20 05:32:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2021-11-20 05:32:26,678 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 84 [2021-11-20 05:32:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:26,679 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2021-11-20 05:32:26,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-20 05:32:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2021-11-20 05:32:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-20 05:32:26,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:26,692 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:26,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:26,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:26,912 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:32:26,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:26,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1275658481, now seen corresponding path program 1 times [2021-11-20 05:32:26,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:26,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145390544] [2021-11-20 05:32:26,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:26,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:26,978 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:26,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247760329] [2021-11-20 05:32:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:26,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:26,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:26,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:27,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:32:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:27,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 2224 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:32:27,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-20 05:32:27,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:27,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:27,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145390544] [2021-11-20 05:32:27,736 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:27,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247760329] [2021-11-20 05:32:27,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247760329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:27,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:27,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:32:27,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567939867] [2021-11-20 05:32:27,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:27,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:32:27,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:27,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:32:27,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:32:27,740 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-20 05:32:28,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:28,115 INFO L93 Difference]: Finished difference Result 285 states and 376 transitions. [2021-11-20 05:32:28,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:32:28,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2021-11-20 05:32:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:28,125 INFO L225 Difference]: With dead ends: 285 [2021-11-20 05:32:28,125 INFO L226 Difference]: Without dead ends: 166 [2021-11-20 05:32:28,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:32:28,134 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 229 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:28,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 888 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:32:28,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-20 05:32:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-20 05:32:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2021-11-20 05:32:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2021-11-20 05:32:28,172 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 99 [2021-11-20 05:32:28,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:28,173 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2021-11-20 05:32:28,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-20 05:32:28,174 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2021-11-20 05:32:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-20 05:32:28,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:28,184 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 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] [2021-11-20 05:32:28,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:28,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:28,397 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:32:28,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash -170213077, now seen corresponding path program 2 times [2021-11-20 05:32:28,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:28,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549527947] [2021-11-20 05:32:28,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:28,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:28,456 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:28,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596206006] [2021-11-20 05:32:28,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:32:28,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:28,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:28,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:32:28,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:32:28,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:32:28,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:32:28,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-20 05:32:29,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:32:29,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:32:29,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549527947] [2021-11-20 05:32:29,285 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 05:32:29,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596206006] [2021-11-20 05:32:29,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596206006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:32:29,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:32:29,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:32:29,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345043780] [2021-11-20 05:32:29,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:32:29,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:32:29,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:32:29,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:32:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:32:29,287 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-20 05:32:29,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:32:29,859 INFO L93 Difference]: Finished difference Result 282 states and 368 transitions. [2021-11-20 05:32:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:32:29,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2021-11-20 05:32:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:32:29,866 INFO L225 Difference]: With dead ends: 282 [2021-11-20 05:32:29,866 INFO L226 Difference]: Without dead ends: 164 [2021-11-20 05:32:29,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:32:29,880 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 231 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:32:29,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 1144 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:32:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-20 05:32:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-20 05:32:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 100 states have internal predecessors, (116), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-20 05:32:29,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2021-11-20 05:32:29,917 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 114 [2021-11-20 05:32:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:32:29,917 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2021-11-20 05:32:29,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-20 05:32:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2021-11-20 05:32:29,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-20 05:32:29,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:32:29,920 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:32:29,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:32:30,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-20 05:32:30,141 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:32:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:32:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1405660739, now seen corresponding path program 1 times [2021-11-20 05:32:30,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:32:30,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690921699] [2021-11-20 05:32:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:30,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:32:30,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 05:32:30,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409631579] [2021-11-20 05:32:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:32:30,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:32:30,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:32:30,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:32:30,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b675d8d7-bcfc-4ccd-a8ac-0ca3761f4e5f/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:32:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:32:31,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 319 conjunts are in the unsatisfiable core [2021-11-20 05:32:31,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:32:31,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-20 05:32:31,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:32:31,949 INFO L354 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2021-11-20 05:32:31,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 48 [2021-11-20 05:32:55,950 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-20 05:32:55,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 134 treesize of output 131 [2021-11-20 05:33:05,145 INFO L354 Elim1Store]: treesize reduction 162, result has 21.0 percent of original size [2021-11-20 05:33:05,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 124 [2021-11-20 05:33:46,654 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-11-20 05:33:46,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 142 treesize of output 134 [2021-11-20 05:33:46,914 INFO L354 Elim1Store]: treesize reduction 254, result has 9.3 percent of original size [2021-11-20 05:33:46,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 154 treesize of output 160 [2021-11-20 05:34:24,485 WARN L322 ript$VariableManager]: TermVariabe aux_mod_v_arrayElimCell_11_45 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:34:24,486 WARN L322 ript$VariableManager]: TermVariabe aux_div_v_arrayElimCell_11_45 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:34:50,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:34:50,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:34:50,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:34:50,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:34:50,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:34:50,550 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-11-20 05:34:50,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 134 [2021-11-20 05:34:50,743 INFO L354 Elim1Store]: treesize reduction 84, result has 30.6 percent of original size [2021-11-20 05:34:50,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 150 treesize of output 174 [2021-11-20 05:35:17,610 WARN L322 ript$VariableManager]: TermVariabe aux_mod_v_arrayElimCell_11_45 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:35:17,611 WARN L322 ript$VariableManager]: TermVariabe aux_div_v_arrayElimCell_11_45 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:35:37,076 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:35:37,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 91 [2021-11-20 05:39:20,627 WARN L838 $PredicateComparison]: unable to prove that (exists ((aux_div_v_arrayElimCell_32_45 Int) (aux_mod_v_arrayElimCell_32_45 Int) (aux_mod_v_arrayElimCell_11_45 Int) (aux_div_v_arrayElimCell_11_45 Int)) (let ((.cse1 (+ aux_mod_v_arrayElimCell_11_45 (* aux_div_v_arrayElimCell_11_45 18446744073709551616))) (.cse2 (+ (* aux_div_v_arrayElimCell_32_45 18446744073709551616) aux_mod_v_arrayElimCell_32_45))) (and (not (= aux_mod_v_arrayElimCell_32_45 0)) (<= aux_mod_v_arrayElimCell_11_45 0) (let ((.cse0 (mod (* (div .cse1 .cse2) .cse2) 18446744073709551616))) (or (and (= |c_aws_array_list_length_#t~ret264| 0) (< 0 .cse0)) (and (<= .cse0 0) (= |c_aws_array_list_length_#t~ret264| 1)))) (<= 0 aux_mod_v_arrayElimCell_11_45) (= (mod .cse1 .cse2) 0) (<= 0 aux_mod_v_arrayElimCell_32_45) (< aux_mod_v_arrayElimCell_32_45 18446744073709551616)))) is different from false [2021-11-20 05:42:53,237 WARN L838 $PredicateComparison]: unable to prove that (exists ((aux_div_v_arrayElimCell_32_45 Int) (aux_mod_v_arrayElimCell_32_45 Int) (aux_mod_v_arrayElimCell_11_45 Int) (aux_div_v_arrayElimCell_11_45 Int)) (let ((.cse1 (+ aux_mod_v_arrayElimCell_11_45 (* aux_div_v_arrayElimCell_11_45 18446744073709551616))) (.cse2 (+ (* aux_div_v_arrayElimCell_32_45 18446744073709551616) aux_mod_v_arrayElimCell_32_45))) (and (not (= aux_mod_v_arrayElimCell_32_45 0)) (<= aux_mod_v_arrayElimCell_11_45 0) (let ((.cse0 (mod (* (div .cse1 .cse2) .cse2) 18446744073709551616))) (or (and (= |c___VERIFIER_assert_#in~cond| 0) (< 0 .cse0)) (and (<= .cse0 0) (= |c___VERIFIER_assert_#in~cond| 1)))) (<= 0 aux_mod_v_arrayElimCell_11_45) (= (mod .cse1 .cse2) 0) (<= 0 aux_mod_v_arrayElimCell_32_45) (< aux_mod_v_arrayElimCell_32_45 18446744073709551616)))) is different from false [2021-11-20 05:46:27,361 WARN L838 $PredicateComparison]: unable to prove that (exists ((aux_div_v_arrayElimCell_32_45 Int) (aux_mod_v_arrayElimCell_32_45 Int) (aux_mod_v_arrayElimCell_11_45 Int) (aux_div_v_arrayElimCell_11_45 Int)) (let ((.cse1 (+ aux_mod_v_arrayElimCell_11_45 (* aux_div_v_arrayElimCell_11_45 18446744073709551616))) (.cse2 (+ (* aux_div_v_arrayElimCell_32_45 18446744073709551616) aux_mod_v_arrayElimCell_32_45))) (and (not (= aux_mod_v_arrayElimCell_32_45 0)) (<= aux_mod_v_arrayElimCell_11_45 0) (let ((.cse0 (mod (* (div .cse1 .cse2) .cse2) 18446744073709551616))) (or (and (<= .cse0 0) (= c___VERIFIER_assert_~cond 1)) (and (= c___VERIFIER_assert_~cond 0) (< 0 .cse0)))) (<= 0 aux_mod_v_arrayElimCell_11_45) (= (mod .cse1 .cse2) 0) (<= 0 aux_mod_v_arrayElimCell_32_45) (< aux_mod_v_arrayElimCell_32_45 18446744073709551616)))) is different from false