./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash df7033dfc83b180e9cf25def7ed6e49b1b8e99adfb4ac0289552069b1c368159 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:50:55,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:50:55,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:50:55,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:50:55,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:50:55,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:50:55,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:50:55,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:50:55,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:50:55,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:50:55,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:50:55,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:50:55,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:50:55,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:50:55,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:50:55,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:50:55,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:50:55,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:50:55,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:50:55,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:50:55,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:50:55,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:50:55,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:50:55,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:50:55,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:50:55,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:50:55,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:50:55,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:50:55,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:50:55,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:50:55,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:50:55,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:50:55,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:50:55,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:50:55,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:50:55,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:50:55,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:50:55,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:50:55,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:50:55,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:50:55,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:50:55,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:50:55,471 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:50:55,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:50:55,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:50:55,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:50:55,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:50:55,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:50:55,474 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:50:55,474 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:50:55,475 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:50:55,475 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:50:55,476 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:50:55,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:50:55,477 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:50:55,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:50:55,477 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:50:55,477 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:50:55,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:50:55,478 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:50:55,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:50:55,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:50:55,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:50:55,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:50:55,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:50:55,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:50:55,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:50:55,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:50:55,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:50:55,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:50:55,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:50:55,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:50:55,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:50:55,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:50:55,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:50:55,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:50:55,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:50:55,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:50:55,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:50:55,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:50:55,484 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df7033dfc83b180e9cf25def7ed6e49b1b8e99adfb4ac0289552069b1c368159 [2021-11-23 03:50:55,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:50:55,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:50:55,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:50:55,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:50:55,778 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:50:55,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i [2021-11-23 03:50:55,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/data/32dac82db/b73345a896a54caf8d124c7ca1e611e8/FLAG64e767778 [2021-11-23 03:50:56,665 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:50:56,670 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i [2021-11-23 03:50:56,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/data/32dac82db/b73345a896a54caf8d124c7ca1e611e8/FLAG64e767778 [2021-11-23 03:50:56,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/data/32dac82db/b73345a896a54caf8d124c7ca1e611e8 [2021-11-23 03:50:56,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:50:56,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:50:56,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:50:56,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:50:56,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:50:56,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:56" (1/1) ... [2021-11-23 03:50:56,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191a19da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:56, skipping insertion in model container [2021-11-23 03:50:56,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:56" (1/1) ... [2021-11-23 03:50:56,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:50:56,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:50:57,200 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_2b58ba2e-366b-4438-8c17-b246f6a551ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4504,4517] [2021-11-23 03:50:57,208 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_2b58ba2e-366b-4438-8c17-b246f6a551ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4564,4577] [2021-11-23 03:50:58,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,175 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,177 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,201 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,203 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,204 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:50:58,590 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:50:58,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:50:58,593 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:50:58,594 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:50:58,595 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:50:58,596 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:50:58,596 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:50:58,597 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:50:58,598 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:50:58,754 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:50:58,842 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,843 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:58,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:50:59,080 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:50:59,109 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_2b58ba2e-366b-4438-8c17-b246f6a551ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4504,4517] [2021-11-23 03:50:59,110 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_2b58ba2e-366b-4438-8c17-b246f6a551ac/sv-benchmarks/c/aws-c-common/aws_byte_cursor_left_trim_pred_harness.i[4564,4577] [2021-11-23 03:50:59,173 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,174 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,174 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,175 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,197 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,198 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,201 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,257 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 03:50:59,258 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 03:50:59,259 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 03:50:59,259 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 03:50:59,260 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 03:50:59,261 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 03:50:59,262 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 03:50:59,262 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 03:50:59,263 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 03:50:59,263 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 03:50:59,305 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 03:50:59,381 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,382 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 03:50:59,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:50:59,720 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:50:59,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59 WrapperNode [2021-11-23 03:50:59,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:50:59,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:50:59,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:50:59,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:50:59,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:50:59,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:50:59,974 INFO L137 Inliner]: procedures = 690, calls = 2620, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 800 [2021-11-23 03:50:59,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:50:59,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:50:59,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:50:59,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:50:59,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:50:59,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:51:00,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:51:00,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:51:00,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:51:00,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:51:00,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:51:00,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:51:00,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:51:00,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:51:00,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:51:00,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (1/1) ... [2021-11-23 03:51:00,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:51:00,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:00,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:51:00,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:51:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-23 03:51:00,223 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-23 03:51:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:51:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-23 03:51:00,225 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-23 03:51:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:51:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:51:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:51:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2021-11-23 03:51:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2021-11-23 03:51:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:51:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:51:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:51:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:51:00,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:51:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-23 03:51:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-23 03:51:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-23 03:51:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-23 03:51:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:51:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:51:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:51:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:51:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:51:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2021-11-23 03:51:00,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2021-11-23 03:51:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:51:00,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:51:00,543 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:51:00,547 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:51:02,185 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:51:02,301 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:51:02,302 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:51:02,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:02 BoogieIcfgContainer [2021-11-23 03:51:02,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:51:02,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:51:02,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:51:02,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:51:02,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:50:56" (1/3) ... [2021-11-23 03:51:02,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@817a16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:02, skipping insertion in model container [2021-11-23 03:51:02,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:59" (2/3) ... [2021-11-23 03:51:02,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@817a16d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:51:02, skipping insertion in model container [2021-11-23 03:51:02,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:51:02" (3/3) ... [2021-11-23 03:51:02,313 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_left_trim_pred_harness.i [2021-11-23 03:51:02,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:51:02,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:51:02,366 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:51:02,373 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:51:02,373 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:51:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 03:51:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:51:02,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:02,398 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:51:02,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:02,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1706243424, now seen corresponding path program 1 times [2021-11-23 03:51:02,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:02,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467635344] [2021-11-23 03:51:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:02,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:51:03,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:03,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467635344] [2021-11-23 03:51:03,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467635344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:03,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:03,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:51:03,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572143086] [2021-11-23 03:51:03,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:03,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:51:03,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:03,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:51:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:51:03,105 INFO L87 Difference]: Start difference. First operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:51:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:03,411 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2021-11-23 03:51:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:51:03,414 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2021-11-23 03:51:03,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:03,423 INFO L225 Difference]: With dead ends: 103 [2021-11-23 03:51:03,423 INFO L226 Difference]: Without dead ends: 64 [2021-11-23 03:51:03,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:51:03,430 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:03,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:51:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-23 03:51:03,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-23 03:51:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-23 03:51:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2021-11-23 03:51:03,479 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 40 [2021-11-23 03:51:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:03,481 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2021-11-23 03:51:03,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:51:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2021-11-23 03:51:03,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:51:03,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:03,485 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:51:03,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:51:03,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:03,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash 348988715, now seen corresponding path program 1 times [2021-11-23 03:51:03,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:03,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505659590] [2021-11-23 03:51:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:03,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 03:51:04,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:04,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505659590] [2021-11-23 03:51:04,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505659590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:04,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:04,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:51:04,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429770548] [2021-11-23 03:51:04,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:04,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:51:04,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:04,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:51:04,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:51:04,157 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 03:51:06,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:06,065 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2021-11-23 03:51:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:51:06,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2021-11-23 03:51:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:06,070 INFO L225 Difference]: With dead ends: 89 [2021-11-23 03:51:06,070 INFO L226 Difference]: Without dead ends: 87 [2021-11-23 03:51:06,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-11-23 03:51:06,072 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 50 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:06,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 509 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:51:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-23 03:51:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2021-11-23 03:51:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.175) internal successors, (47), 42 states have internal predecessors, (47), 24 states have call successors, (24), 9 states have call predecessors, (24), 8 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-23 03:51:06,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2021-11-23 03:51:06,091 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 42 [2021-11-23 03:51:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:06,092 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2021-11-23 03:51:06,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 03:51:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2021-11-23 03:51:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 03:51:06,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:06,095 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:51:06,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:51:06,095 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:06,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1396918630, now seen corresponding path program 1 times [2021-11-23 03:51:06,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:06,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982540587] [2021-11-23 03:51:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:06,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 03:51:07,157 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:07,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982540587] [2021-11-23 03:51:07,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982540587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:51:07,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356002391] [2021-11-23 03:51:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:07,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:07,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:07,163 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:51:07,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b58ba2e-366b-4438-8c17-b246f6a551ac/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:51:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:07,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-23 03:51:07,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:51:07,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 23 [2021-11-23 03:51:07,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-23 03:51:10,229 INFO L388 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 49 treesize of output 37 [2021-11-23 03:51:10,233 INFO L388 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 34 treesize of output 22 [2021-11-23 03:51:11,322 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 03:51:11,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 28 [2021-11-23 03:51:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:51:11,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:51:13,265 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 13430 disjunctions. This might take some time... [2021-11-23 03:51:25,770 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.