./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_callback_string_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_callback_string_eq_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 617e08addfe2d13b261907959d3757079a581721356bb3e7b4090decaff2b168 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 21:02:18,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 21:02:18,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 21:02:18,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 21:02:18,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 21:02:18,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 21:02:18,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 21:02:18,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 21:02:18,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 21:02:18,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 21:02:18,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 21:02:18,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 21:02:18,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 21:02:18,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 21:02:18,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 21:02:18,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 21:02:18,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 21:02:18,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 21:02:18,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 21:02:18,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 21:02:18,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 21:02:18,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 21:02:18,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 21:02:18,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 21:02:18,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 21:02:18,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 21:02:18,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 21:02:18,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 21:02:18,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 21:02:18,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 21:02:18,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 21:02:18,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 21:02:18,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 21:02:18,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 21:02:18,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 21:02:18,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 21:02:18,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 21:02:18,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 21:02:18,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 21:02:18,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 21:02:18,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 21:02:18,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 21:02:18,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 21:02:18,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 21:02:18,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 21:02:18,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 21:02:18,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 21:02:18,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 21:02:18,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 21:02:18,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 21:02:18,491 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 21:02:18,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 21:02:18,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 21:02:18,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 21:02:18,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 21:02:18,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 21:02:18,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 21:02:18,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 21:02:18,493 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 21:02:18,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 21:02:18,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 21:02:18,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 21:02:18,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 21:02:18,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:02:18,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 21:02:18,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 21:02:18,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 21:02:18,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 21:02:18,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 21:02:18,494 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 21:02:18,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 21:02:18,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 21:02:18,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 21:02:18,496 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 617e08addfe2d13b261907959d3757079a581721356bb3e7b4090decaff2b168 [2021-11-16 21:02:18,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 21:02:18,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 21:02:18,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 21:02:18,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 21:02:18,727 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 21:02:18,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_callback_string_eq_harness.i [2021-11-16 21:02:18,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/549699200/88117fb8af9d40b4bc1808c55007a385/FLAG91113c094 [2021-11-16 21:02:19,373 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 21:02:19,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_string_eq_harness.i [2021-11-16 21:02:19,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/549699200/88117fb8af9d40b4bc1808c55007a385/FLAG91113c094 [2021-11-16 21:02:19,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/549699200/88117fb8af9d40b4bc1808c55007a385 [2021-11-16 21:02:19,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 21:02:19,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 21:02:19,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 21:02:19,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 21:02:19,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 21:02:19,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:02:19" (1/1) ... [2021-11-16 21:02:19,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1b7a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:19, skipping insertion in model container [2021-11-16 21:02:19,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:02:19" (1/1) ... [2021-11-16 21:02:19,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 21:02:19,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 21:02:19,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_string_eq_harness.i[4501,4514] [2021-11-16 21:02:20,000 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_string_eq_harness.i[4561,4574] [2021-11-16 21:02:20,018 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:02:20,023 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:02:20,535 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,554 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,554 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,555 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,556 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,568 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,569 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,570 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,571 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:02:20,821 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:02:20,821 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:02:20,822 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:02:20,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:02:20,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:02:20,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:02:20,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:02:20,824 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:02:20,825 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:02:20,934 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 21:02:20,988 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:20,988 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,206 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,208 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,224 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,226 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,232 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,232 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,247 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,248 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,248 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,248 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,249 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,250 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,292 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:02:21,330 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 21:02:21,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_string_eq_harness.i[4501,4514] [2021-11-16 21:02:21,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_string_eq_harness.i[4561,4574] [2021-11-16 21:02:21,361 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:02:21,362 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:02:21,396 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,397 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,397 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,398 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,398 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,402 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,403 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,403 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,404 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,425 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:02:21,425 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:02:21,426 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:02:21,426 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:02:21,427 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:02:21,427 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:02:21,427 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:02:21,427 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:02:21,428 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:02:21,428 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:02:21,439 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 21:02:21,470 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,471 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,525 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,526 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,534 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,535 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,543 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,545 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,545 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,546 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:02:21,568 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:02:21,739 INFO L208 MainTranslator]: Completed translation [2021-11-16 21:02:21,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21 WrapperNode [2021-11-16 21:02:21,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 21:02:21,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 21:02:21,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 21:02:21,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 21:02:21,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:21,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:21,962 INFO L137 Inliner]: procedures = 770, calls = 3259, calls flagged for inlining = 77, calls inlined = 7, statements flattened = 397 [2021-11-16 21:02:21,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 21:02:21,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 21:02:21,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 21:02:21,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 21:02:21,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:21,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:21,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:21,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:21,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:22,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:22,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:22,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 21:02:22,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 21:02:22,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 21:02:22,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 21:02:22,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (1/1) ... [2021-11-16 21:02:22,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:02:22,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:02:22,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 21:02:22,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 21:02:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-16 21:02:22,097 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-16 21:02:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-16 21:02:22,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-16 21:02:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-16 21:02:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-16 21:02:22,097 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-16 21:02:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 21:02:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 21:02:22,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 21:02:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 21:02:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 21:02:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 21:02:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 21:02:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 21:02:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-16 21:02:22,098 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-16 21:02:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 21:02:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-16 21:02:22,099 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-16 21:02:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-16 21:02:22,099 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-16 21:02:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 21:02:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 21:02:22,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 21:02:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 21:02:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-16 21:02:22,099 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-16 21:02:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure aws_c_string_is_valid [2021-11-16 21:02:22,100 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_c_string_is_valid [2021-11-16 21:02:22,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 21:02:22,302 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 21:02:22,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 21:02:22,704 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !true; [2021-11-16 21:02:22,729 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 21:02:22,734 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 21:02:22,735 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-16 21:02:22,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:02:22 BoogieIcfgContainer [2021-11-16 21:02:22,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 21:02:22,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 21:02:22,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 21:02:22,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 21:02:22,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:02:19" (1/3) ... [2021-11-16 21:02:22,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c0bd27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:02:22, skipping insertion in model container [2021-11-16 21:02:22,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:02:21" (2/3) ... [2021-11-16 21:02:22,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c0bd27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:02:22, skipping insertion in model container [2021-11-16 21:02:22,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:02:22" (3/3) ... [2021-11-16 21:02:22,746 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_string_eq_harness.i [2021-11-16 21:02:22,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 21:02:22,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 21:02:22,781 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 21:02:22,786 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 [2021-11-16 21:02:22,787 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 21:02:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 71 states have internal predecessors, (87), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-16 21:02:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-16 21:02:22,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:22,807 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:02:22,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1707101443, now seen corresponding path program 1 times [2021-11-16 21:02:22,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:22,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991160991] [2021-11-16 21:02:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:22,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 21:02:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-16 21:02:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 21:02:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 21:02:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-16 21:02:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-16 21:02:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-16 21:02:23,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:23,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991160991] [2021-11-16 21:02:23,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991160991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:02:23,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:02:23,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 21:02:23,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165421922] [2021-11-16 21:02:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:02:23,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 21:02:23,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:02:23,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 21:02:23,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-16 21:02:23,350 INFO L87 Difference]: Start difference. First operand has 110 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 71 states have internal predecessors, (87), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-16 21:02:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:02:23,514 INFO L93 Difference]: Finished difference Result 217 states and 299 transitions. [2021-11-16 21:02:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-16 21:02:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 93 [2021-11-16 21:02:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:02:23,522 INFO L225 Difference]: With dead ends: 217 [2021-11-16 21:02:23,523 INFO L226 Difference]: Without dead ends: 104 [2021-11-16 21:02:23,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-16 21:02:23,528 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 68 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:02:23,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 182 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:02:23,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-16 21:02:23,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-11-16 21:02:23,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-16 21:02:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2021-11-16 21:02:23,561 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 93 [2021-11-16 21:02:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:02:23,562 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2021-11-16 21:02:23,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-16 21:02:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2021-11-16 21:02:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-16 21:02:23,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:23,566 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:02:23,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 21:02:23,566 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:23,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:23,567 INFO L85 PathProgramCache]: Analyzing trace with hash 566240687, now seen corresponding path program 1 times [2021-11-16 21:02:23,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:23,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985632993] [2021-11-16 21:02:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:23,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:23,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 21:02:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-16 21:02:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 21:02:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 21:02:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-16 21:02:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-16 21:02:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-16 21:02:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-16 21:02:24,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:24,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985632993] [2021-11-16 21:02:24,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985632993] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:02:24,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582928697] [2021-11-16 21:02:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:24,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:24,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:02:24,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:02:24,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-16 21:02:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:24,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-16 21:02:24,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:02:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-16 21:02:24,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:02:24,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582928697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:02:24,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:02:24,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 24 [2021-11-16 21:02:24,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179632454] [2021-11-16 21:02:24,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:02:24,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-16 21:02:24,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:02:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-16 21:02:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2021-11-16 21:02:24,750 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 6 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-16 21:02:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:02:24,996 INFO L93 Difference]: Finished difference Result 192 states and 252 transitions. [2021-11-16 21:02:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-16 21:02:24,997 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 6 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 96 [2021-11-16 21:02:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:02:24,999 INFO L225 Difference]: With dead ends: 192 [2021-11-16 21:02:24,999 INFO L226 Difference]: Without dead ends: 144 [2021-11-16 21:02:25,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2021-11-16 21:02:25,001 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 113 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:02:25,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1497 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:02:25,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-16 21:02:25,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2021-11-16 21:02:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 73 states have internal predecessors, (85), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-16 21:02:25,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2021-11-16 21:02:25,035 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 96 [2021-11-16 21:02:25,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:02:25,035 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2021-11-16 21:02:25,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 6 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2021-11-16 21:02:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2021-11-16 21:02:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-16 21:02:25,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:25,038 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:02:25,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-16 21:02:25,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:25,252 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:25,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:25,252 INFO L85 PathProgramCache]: Analyzing trace with hash 18133626, now seen corresponding path program 1 times [2021-11-16 21:02:25,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:25,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221439700] [2021-11-16 21:02:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:25,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 21:02:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-16 21:02:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 21:02:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 21:02:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-16 21:02:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-16 21:02:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-16 21:02:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-16 21:02:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-16 21:02:25,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:25,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221439700] [2021-11-16 21:02:25,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221439700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:02:25,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983051337] [2021-11-16 21:02:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:25,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:25,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:02:25,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:02:25,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-16 21:02:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:25,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-16 21:02:25,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:02:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-16 21:02:26,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:02:26,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983051337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:02:26,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:02:26,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 26 [2021-11-16 21:02:26,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033607899] [2021-11-16 21:02:26,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:02:26,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-16 21:02:26,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:02:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-16 21:02:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2021-11-16 21:02:26,231 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 11 states have internal predecessors, (45), 6 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 6 states have call successors, (15) [2021-11-16 21:02:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:02:26,398 INFO L93 Difference]: Finished difference Result 209 states and 275 transitions. [2021-11-16 21:02:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-16 21:02:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 11 states have internal predecessors, (45), 6 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 6 states have call successors, (15) Word has length 105 [2021-11-16 21:02:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:02:26,401 INFO L225 Difference]: With dead ends: 209 [2021-11-16 21:02:26,402 INFO L226 Difference]: Without dead ends: 174 [2021-11-16 21:02:26,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=905, Unknown=0, NotChecked=0, Total=992 [2021-11-16 21:02:26,406 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 151 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:02:26,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1597 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:02:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-16 21:02:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 125. [2021-11-16 21:02:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 78 states have internal predecessors, (90), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-11-16 21:02:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2021-11-16 21:02:26,423 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 105 [2021-11-16 21:02:26,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:02:26,425 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2021-11-16 21:02:26,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 11 states have internal predecessors, (45), 6 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 6 states have call successors, (15) [2021-11-16 21:02:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2021-11-16 21:02:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-16 21:02:26,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:26,432 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:02:26,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-16 21:02:26,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-16 21:02:26,646 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:26,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:26,646 INFO L85 PathProgramCache]: Analyzing trace with hash 864229612, now seen corresponding path program 1 times [2021-11-16 21:02:26,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:26,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811227855] [2021-11-16 21:02:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:26,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 21:02:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-16 21:02:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 21:02:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 21:02:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-16 21:02:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-16 21:02:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-16 21:02:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-16 21:02:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-16 21:02:26,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:26,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811227855] [2021-11-16 21:02:26,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811227855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:02:26,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:02:26,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-16 21:02:26,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840412999] [2021-11-16 21:02:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:02:26,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 21:02:26,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:02:26,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 21:02:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-16 21:02:26,850 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-16 21:02:27,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:02:27,110 INFO L93 Difference]: Finished difference Result 213 states and 279 transitions. [2021-11-16 21:02:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 21:02:27,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 106 [2021-11-16 21:02:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:02:27,111 INFO L225 Difference]: With dead ends: 213 [2021-11-16 21:02:27,112 INFO L226 Difference]: Without dead ends: 160 [2021-11-16 21:02:27,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-16 21:02:27,113 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 82 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 21:02:27,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 518 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 21:02:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-16 21:02:27,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 122. [2021-11-16 21:02:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 75 states have (on average 1.16) internal successors, (87), 76 states have internal predecessors, (87), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-16 21:02:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 158 transitions. [2021-11-16 21:02:27,138 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 158 transitions. Word has length 106 [2021-11-16 21:02:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:02:27,138 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 158 transitions. [2021-11-16 21:02:27,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-16 21:02:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 158 transitions. [2021-11-16 21:02:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-16 21:02:27,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:27,139 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-16 21:02:27,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-16 21:02:27,139 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:27,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash -704073469, now seen corresponding path program 1 times [2021-11-16 21:02:27,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:27,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736445981] [2021-11-16 21:02:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:27,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-16 21:02:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 21:02:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-16 21:02:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-16 21:02:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-16 21:02:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-16 21:02:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 21:02:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-16 21:02:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-16 21:02:27,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:27,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736445981] [2021-11-16 21:02:27,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736445981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:02:27,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145747205] [2021-11-16 21:02:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:27,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:27,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:02:27,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:02:27,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-16 21:02:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:27,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-16 21:02:27,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:02:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-16 21:02:28,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:02:28,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145747205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:02:28,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:02:28,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 25 [2021-11-16 21:02:28,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874871010] [2021-11-16 21:02:28,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:02:28,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-16 21:02:28,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:02:28,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-16 21:02:28,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2021-11-16 21:02:28,032 INFO L87 Difference]: Start difference. First operand 122 states and 158 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-16 21:02:28,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:02:28,180 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2021-11-16 21:02:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 21:02:28,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) Word has length 130 [2021-11-16 21:02:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:02:28,183 INFO L225 Difference]: With dead ends: 206 [2021-11-16 21:02:28,183 INFO L226 Difference]: Without dead ends: 171 [2021-11-16 21:02:28,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2021-11-16 21:02:28,184 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 96 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:02:28,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1752 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:02:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-16 21:02:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 130. [2021-11-16 21:02:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.1625) internal successors, (93), 81 states have internal predecessors, (93), 39 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-16 21:02:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2021-11-16 21:02:28,194 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 130 [2021-11-16 21:02:28,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:02:28,195 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2021-11-16 21:02:28,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-16 21:02:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2021-11-16 21:02:28,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-16 21:02:28,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:28,196 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-16 21:02:28,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-16 21:02:28,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:28,412 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash -49353853, now seen corresponding path program 1 times [2021-11-16 21:02:28,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:28,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842977283] [2021-11-16 21:02:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:28,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-16 21:02:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 21:02:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-16 21:02:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-16 21:02:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-16 21:02:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-16 21:02:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 21:02:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-16 21:02:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-16 21:02:28,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:28,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842977283] [2021-11-16 21:02:28,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842977283] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:02:28,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375338286] [2021-11-16 21:02:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:28,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:28,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:02:28,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:02:28,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-16 21:02:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:29,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-16 21:02:29,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:02:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-16 21:02:29,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:02:29,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375338286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:02:29,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:02:29,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [19] total 23 [2021-11-16 21:02:29,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513606602] [2021-11-16 21:02:29,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:02:29,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:02:29,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:02:29,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:02:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-11-16 21:02:29,483 INFO L87 Difference]: Start difference. First operand 130 states and 170 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-16 21:02:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:02:29,587 INFO L93 Difference]: Finished difference Result 198 states and 257 transitions. [2021-11-16 21:02:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 21:02:29,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 131 [2021-11-16 21:02:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:02:29,589 INFO L225 Difference]: With dead ends: 198 [2021-11-16 21:02:29,589 INFO L226 Difference]: Without dead ends: 150 [2021-11-16 21:02:29,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-11-16 21:02:29,590 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 22 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:02:29,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 737 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:02:29,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-16 21:02:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 131. [2021-11-16 21:02:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 82 states have internal predecessors, (93), 39 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-16 21:02:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 170 transitions. [2021-11-16 21:02:29,599 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 170 transitions. Word has length 131 [2021-11-16 21:02:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:02:29,599 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 170 transitions. [2021-11-16 21:02:29,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-16 21:02:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 170 transitions. [2021-11-16 21:02:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-16 21:02:29,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:29,601 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:02:29,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-16 21:02:29,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:29,816 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:29,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2009192691, now seen corresponding path program 1 times [2021-11-16 21:02:29,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:29,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589650920] [2021-11-16 21:02:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:29,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:29,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:29,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 21:02:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-16 21:02:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 21:02:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 21:02:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-16 21:02:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-16 21:02:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-16 21:02:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-16 21:02:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 21:02:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,227 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-16 21:02:30,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:30,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589650920] [2021-11-16 21:02:30,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589650920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:02:30,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305899747] [2021-11-16 21:02:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:30,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:30,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:02:30,244 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:02:30,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-16 21:02:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:30,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-16 21:02:30,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:02:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-16 21:02:30,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:02:30,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305899747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:02:30,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:02:30,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19] total 30 [2021-11-16 21:02:30,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590044484] [2021-11-16 21:02:30,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:02:30,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-16 21:02:30,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:02:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-16 21:02:30,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2021-11-16 21:02:30,830 INFO L87 Difference]: Start difference. First operand 131 states and 170 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 15 states have internal predecessors, (49), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-16 21:02:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:02:31,278 INFO L93 Difference]: Finished difference Result 176 states and 225 transitions. [2021-11-16 21:02:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-16 21:02:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 15 states have internal predecessors, (49), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) Word has length 114 [2021-11-16 21:02:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:02:31,280 INFO L225 Difference]: With dead ends: 176 [2021-11-16 21:02:31,280 INFO L226 Difference]: Without dead ends: 150 [2021-11-16 21:02:31,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=1495, Unknown=0, NotChecked=0, Total=1640 [2021-11-16 21:02:31,282 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 141 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 21:02:31,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 1785 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 21:02:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-16 21:02:31,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 131. [2021-11-16 21:02:31,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 82 states have internal predecessors, (92), 39 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-16 21:02:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 169 transitions. [2021-11-16 21:02:31,313 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 169 transitions. Word has length 114 [2021-11-16 21:02:31,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:02:31,314 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 169 transitions. [2021-11-16 21:02:31,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 15 states have internal predecessors, (49), 7 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-16 21:02:31,315 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 169 transitions. [2021-11-16 21:02:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-16 21:02:31,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:31,317 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:02:31,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-16 21:02:31,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:31,536 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:31,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:31,537 INFO L85 PathProgramCache]: Analyzing trace with hash -658486677, now seen corresponding path program 1 times [2021-11-16 21:02:31,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:31,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378681166] [2021-11-16 21:02:31,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:31,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 21:02:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-16 21:02:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 21:02:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 21:02:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-16 21:02:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-16 21:02:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-16 21:02:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-16 21:02:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 21:02:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-16 21:02:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-16 21:02:31,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:31,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378681166] [2021-11-16 21:02:31,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378681166] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:02:31,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623214565] [2021-11-16 21:02:31,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:32,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:32,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:02:32,001 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:02:32,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-16 21:02:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:32,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-16 21:02:32,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:02:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-16 21:02:32,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:02:32,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623214565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:02:32,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:02:32,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [22] total 34 [2021-11-16 21:02:32,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820719302] [2021-11-16 21:02:32,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:02:32,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-16 21:02:32,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:02:32,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-16 21:02:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1044, Unknown=0, NotChecked=0, Total=1122 [2021-11-16 21:02:32,752 INFO L87 Difference]: Start difference. First operand 131 states and 169 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 9 states have call predecessors, (17), 6 states have call successors, (17) [2021-11-16 21:02:33,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:02:33,138 INFO L93 Difference]: Finished difference Result 156 states and 200 transitions. [2021-11-16 21:02:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-16 21:02:33,139 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 9 states have call predecessors, (17), 6 states have call successors, (17) Word has length 119 [2021-11-16 21:02:33,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:02:33,140 INFO L225 Difference]: With dead ends: 156 [2021-11-16 21:02:33,140 INFO L226 Difference]: Without dead ends: 154 [2021-11-16 21:02:33,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2021-11-16 21:02:33,141 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 92 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 21:02:33,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 2135 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 21:02:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-16 21:02:33,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 142. [2021-11-16 21:02:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 88 states have (on average 1.125) internal successors, (99), 90 states have internal predecessors, (99), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-16 21:02:33,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 182 transitions. [2021-11-16 21:02:33,148 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 182 transitions. Word has length 119 [2021-11-16 21:02:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:02:33,149 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 182 transitions. [2021-11-16 21:02:33,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 9 states have call predecessors, (17), 6 states have call successors, (17) [2021-11-16 21:02:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 182 transitions. [2021-11-16 21:02:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-16 21:02:33,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:33,150 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-16 21:02:33,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-16 21:02:33,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:33,369 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:33,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1480984188, now seen corresponding path program 1 times [2021-11-16 21:02:33,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:33,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584886936] [2021-11-16 21:02:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:33,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-16 21:02:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 21:02:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-16 21:02:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-16 21:02:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-16 21:02:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-16 21:02:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-16 21:02:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-16 21:02:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-16 21:02:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-16 21:02:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-16 21:02:33,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:33,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584886936] [2021-11-16 21:02:33,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584886936] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:02:33,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754768986] [2021-11-16 21:02:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:33,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:33,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:02:33,786 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:02:33,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-16 21:02:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:33,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-16 21:02:33,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:02:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-16 21:02:34,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:02:34,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754768986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:02:34,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:02:34,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 24 [2021-11-16 21:02:34,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098594478] [2021-11-16 21:02:34,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:02:34,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-16 21:02:34,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:02:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-16 21:02:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2021-11-16 21:02:34,232 INFO L87 Difference]: Start difference. First operand 142 states and 182 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-16 21:02:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:02:34,402 INFO L93 Difference]: Finished difference Result 202 states and 256 transitions. [2021-11-16 21:02:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 21:02:34,403 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) Word has length 144 [2021-11-16 21:02:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:02:34,404 INFO L225 Difference]: With dead ends: 202 [2021-11-16 21:02:34,404 INFO L226 Difference]: Without dead ends: 154 [2021-11-16 21:02:34,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2021-11-16 21:02:34,405 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 54 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:02:34,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 1627 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:02:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-16 21:02:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 142. [2021-11-16 21:02:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 88 states have (on average 1.1136363636363635) internal successors, (98), 90 states have internal predecessors, (98), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-16 21:02:34,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 181 transitions. [2021-11-16 21:02:34,422 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 181 transitions. Word has length 144 [2021-11-16 21:02:34,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:02:34,422 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 181 transitions. [2021-11-16 21:02:34,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 10 states have internal predecessors, (57), 5 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-16 21:02:34,422 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 181 transitions. [2021-11-16 21:02:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-16 21:02:34,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:02:34,424 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:02:34,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-16 21:02:34,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:34,658 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:02:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:02:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1842933249, now seen corresponding path program 1 times [2021-11-16 21:02:34,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:02:34,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057794549] [2021-11-16 21:02:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:34,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:02:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:02:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:02:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:02:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:02:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:02:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:02:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 21:02:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-16 21:02:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-16 21:02:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 21:02:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-16 21:02:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-16 21:02:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-16 21:02:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-16 21:02:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 21:02:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-16 21:02:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-16 21:02:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-16 21:02:34,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:02:34,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057794549] [2021-11-16 21:02:34,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057794549] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:02:34,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203582086] [2021-11-16 21:02:34,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:02:34,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:02:34,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:02:34,970 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:02:34,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-16 21:02:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:02:35,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-16 21:02:35,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:02:35,235 INFO L354 Elim1Store]: treesize reduction 33, result has 28.3 percent of original size [2021-11-16 21:02:35,236 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 1 case distinctions, treesize of input 32 treesize of output 32 [2021-11-16 21:02:35,265 INFO L354 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2021-11-16 21:02:35,265 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 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-16 21:02:57,181 WARN L227 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 21:03:35,786 WARN L227 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 64 DAG size of output: 43 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 21:03:44,600 INFO L354 Elim1Store]: treesize reduction 34, result has 78.9 percent of original size [2021-11-16 21:03:44,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 117 treesize of output 187 [2021-11-16 21:03:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 35 proven. 11 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-16 21:03:46,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:03:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-16 21:03:46,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203582086] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 21:03:46,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:03:46,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13, 19] total 41 [2021-11-16 21:03:46,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321838004] [2021-11-16 21:03:46,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:03:46,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-16 21:03:46,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:03:46,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-16 21:03:46,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2021-11-16 21:03:46,945 INFO L87 Difference]: Start difference. First operand 142 states and 181 transitions. Second operand has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 6 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-16 21:03:47,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:03:47,645 INFO L93 Difference]: Finished difference Result 177 states and 225 transitions. [2021-11-16 21:03:47,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-16 21:03:47,645 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 6 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 127 [2021-11-16 21:03:47,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:03:47,647 INFO L225 Difference]: With dead ends: 177 [2021-11-16 21:03:47,647 INFO L226 Difference]: Without dead ends: 175 [2021-11-16 21:03:47,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 237 SyntacticMatches, 21 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 66.1s TimeCoverageRelationStatistics Valid=264, Invalid=1992, Unknown=0, NotChecked=0, Total=2256 [2021-11-16 21:03:47,648 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 116 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 21:03:47,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1083 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-16 21:03:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-16 21:03:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 157. [2021-11-16 21:03:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 98 states have (on average 1.1020408163265305) internal successors, (108), 101 states have internal predecessors, (108), 46 states have call successors, (46), 12 states have call predecessors, (46), 12 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2021-11-16 21:03:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 199 transitions. [2021-11-16 21:03:47,658 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 199 transitions. Word has length 127 [2021-11-16 21:03:47,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:03:47,659 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 199 transitions. [2021-11-16 21:03:47,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 6 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-16 21:03:47,659 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 199 transitions. [2021-11-16 21:03:47,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-16 21:03:47,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:03:47,675 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-16 21:03:47,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-16 21:03:47,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-16 21:03:47,876 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:03:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:03:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash -505282498, now seen corresponding path program 1 times [2021-11-16 21:03:47,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:03:47,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844818755] [2021-11-16 21:03:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:03:47,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:03:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:03:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:03:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:03:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:03:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:03:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:03:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 21:03:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-16 21:03:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:03:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:03:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:03:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:03:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-16 21:03:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 21:03:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-16 21:03:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-16 21:03:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-16 21:03:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-16 21:03:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 21:03:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-16 21:03:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-16 21:03:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:03:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-16 21:03:48,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:03:48,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844818755] [2021-11-16 21:03:48,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844818755] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:03:48,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100940668] [2021-11-16 21:03:48,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:03:48,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:03:48,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:03:48,355 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:03:48,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-16 21:03:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:03:48,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-16 21:03:48,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:03:48,815 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 62 proven. 9 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-16 21:03:48,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:03:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-16 21:03:49,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100940668] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 21:03:49,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-16 21:03:49,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 26 [2021-11-16 21:03:49,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276454016] [2021-11-16 21:03:49,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-16 21:03:49,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-16 21:03:49,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:03:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-16 21:03:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=593, Unknown=0, NotChecked=0, Total=650 [2021-11-16 21:03:49,105 INFO L87 Difference]: Start difference. First operand 157 states and 199 transitions. Second operand has 26 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 19 states have internal predecessors, (91), 11 states have call successors, (38), 4 states have call predecessors, (38), 7 states have return successors, (38), 14 states have call predecessors, (38), 11 states have call successors, (38) [2021-11-16 21:03:49,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:03:49,499 INFO L93 Difference]: Finished difference Result 190 states and 233 transitions. [2021-11-16 21:03:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-16 21:03:49,500 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 19 states have internal predecessors, (91), 11 states have call successors, (38), 4 states have call predecessors, (38), 7 states have return successors, (38), 14 states have call predecessors, (38), 11 states have call successors, (38) Word has length 145 [2021-11-16 21:03:49,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:03:49,501 INFO L225 Difference]: With dead ends: 190 [2021-11-16 21:03:49,501 INFO L226 Difference]: Without dead ends: 0 [2021-11-16 21:03:49,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-11-16 21:03:49,502 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 21:03:49,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 329 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 21:03:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-16 21:03:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-16 21:03:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-16 21:03:49,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-16 21:03:49,502 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 145 [2021-11-16 21:03:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:03:49,503 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-16 21:03:49,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.7916666666666665) internal successors, (91), 19 states have internal predecessors, (91), 11 states have call successors, (38), 4 states have call predecessors, (38), 7 states have return successors, (38), 14 states have call predecessors, (38), 11 states have call successors, (38) [2021-11-16 21:03:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-16 21:03:49,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-16 21:03:49,505 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-16 21:03:49,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-16 21:03:49,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:03:49,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-16 21:03:49,804 INFO L854 garLoopResultBuilder]: At program point L6814(line 6814) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 96)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-11-16 21:03:49,805 INFO L858 garLoopResultBuilder]: For program point L6815-1(line 6815) no Hoare annotation was computed. [2021-11-16 21:03:49,805 INFO L854 garLoopResultBuilder]: At program point L6815(line 6815) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 96)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-11-16 21:03:49,805 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6813 6817) no Hoare annotation was computed. [2021-11-16 21:03:49,805 INFO L858 garLoopResultBuilder]: For program point L6814-1(line 6814) no Hoare annotation was computed. [2021-11-16 21:03:49,805 INFO L854 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6813 6817) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-11-16 21:03:49,805 INFO L854 garLoopResultBuilder]: At program point L6828(lines 6819 6829) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 96)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 96)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base| 0))) [2021-11-16 21:03:49,805 INFO L858 garLoopResultBuilder]: For program point L6823-1(lines 6823 6824) no Hoare annotation was computed. [2021-11-16 21:03:49,805 INFO L854 garLoopResultBuilder]: At program point L6823(line 6823) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 96)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 96))) [2021-11-16 21:03:49,805 INFO L858 garLoopResultBuilder]: For program point L6823-5(lines 6823 6824) no Hoare annotation was computed. [2021-11-16 21:03:49,805 INFO L858 garLoopResultBuilder]: For program point L6820-1(line 6820) no Hoare annotation was computed. [2021-11-16 21:03:49,805 INFO L854 garLoopResultBuilder]: At program point L6820(line 6820) the Hoare annotation is: (let ((.cse0 (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 96)))) (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 96)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (or .cse0 (<= (* 18446744073709551616 (div (+ 18446744073709551520 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) 18446744073709551616)) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|)) (or .cse0 (<= |ensure_string_is_allocated_bounded_length_~len~1#1| (+ (* 18446744073709551616 (div |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616)) 95))) (= |old(#valid)| |#valid|))) [2021-11-16 21:03:49,805 INFO L858 garLoopResultBuilder]: For program point L6823-3(line 6823) no Hoare annotation was computed. [2021-11-16 21:03:49,805 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6813 6817) no Hoare annotation was computed. [2021-11-16 21:03:49,805 INFO L854 garLoopResultBuilder]: At program point L6823-2(line 6823) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 96)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 96))) [2021-11-16 21:03:49,805 INFO L858 garLoopResultBuilder]: For program point L6896-1(lines 6896 6898) no Hoare annotation was computed. [2021-11-16 21:03:49,805 INFO L854 garLoopResultBuilder]: At program point L6896(lines 6896 6898) the Hoare annotation is: (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-11-16 21:03:49,805 INFO L854 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6895 6900) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6895 6900) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6895 6900) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L861 garLoopResultBuilder]: At program point aws_array_eqENTRY(lines 7686 7706) the Hoare annotation is: true [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point L7690(lines 7687 7706) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point aws_array_eqEXIT(lines 7686 7706) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L861 garLoopResultBuilder]: At program point L7688-1(line 7688) the Hoare annotation is: true [2021-11-16 21:03:49,806 INFO L861 garLoopResultBuilder]: At program point L7688(line 7688) the Hoare annotation is: true [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point aws_array_eqFINAL(lines 7686 7706) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point L7699(lines 7699 7703) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point aws_c_string_is_validFINAL(lines 6263 6273) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L861 garLoopResultBuilder]: At program point aws_c_string_is_validENTRY(lines 6263 6273) the Hoare annotation is: true [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point aws_c_string_is_validEXIT(lines 6263 6273) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6902 6904) no Hoare annotation was computed. [2021-11-16 21:03:49,806 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6902 6904) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6902 6904) the Hoare annotation is: true [2021-11-16 21:03:49,807 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6253 6258) the Hoare annotation is: true [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point L6257-2(line 6257) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point L6257-3(line 6257) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point L6257(line 6257) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6253 6258) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point L6257-5(line 6257) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6253 6258) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L854 garLoopResultBuilder]: At program point L11324(line 11324) the Hoare annotation is: false [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point L11324-1(line 11324) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L861 garLoopResultBuilder]: At program point L11328(line 11328) the Hoare annotation is: true [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point L11060(lines 11060 11064) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point L7113-1(lines 7112 7125) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L854 garLoopResultBuilder]: At program point L7113(line 7113) the Hoare annotation is: false [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-16 21:03:49,807 INFO L854 garLoopResultBuilder]: At program point L10805-1(line 10805) the Hoare annotation is: false [2021-11-16 21:03:49,807 INFO L854 garLoopResultBuilder]: At program point L10805(line 10805) the Hoare annotation is: false [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L11317(lines 11317 11327) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L10805-2(line 10805) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L11065(lines 11065 11073) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L854 garLoopResultBuilder]: At program point L11074(line 11074) the Hoare annotation is: false [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L854 garLoopResultBuilder]: At program point L11074-2(lines 11056 11075) the Hoare annotation is: false [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L11074-1(line 11074) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L10806-2(line 10806) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L854 garLoopResultBuilder]: At program point L10810-6(line 10810) the Hoare annotation is: false [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L11318-1(line 11318) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L854 garLoopResultBuilder]: At program point L10806-1(line 10806) the Hoare annotation is: false [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L11058(line 11058) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L10810-7(line 10810) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L10810-2(line 10810) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L7123-1(line 7123) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L10810-1(line 10810) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L854 garLoopResultBuilder]: At program point L7123(line 7123) the Hoare annotation is: false [2021-11-16 21:03:49,808 INFO L861 garLoopResultBuilder]: At program point L11318(line 11318) the Hoare annotation is: true [2021-11-16 21:03:49,808 INFO L854 garLoopResultBuilder]: At program point L10806(line 10806) the Hoare annotation is: false [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L10810-4(line 10810) no Hoare annotation was computed. [2021-11-16 21:03:49,808 INFO L854 garLoopResultBuilder]: At program point L10810-3(line 10810) the Hoare annotation is: false [2021-11-16 21:03:49,808 INFO L858 garLoopResultBuilder]: For program point L7119-1(line 7119) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L11058-5(line 11058) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L7119(line 7119) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L11058-2(line 11058) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L10810-9(line 10810) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L11058-4(line 11058) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L11058-3(line 11058) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L11323(lines 11323 11326) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L11319-3(line 11319) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L11319-5(line 11319) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L11319-4(line 11319) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L11059(line 11059) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L10803(lines 10803 10811) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L11319-1(line 11319) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L11319(line 11319) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L7120-1(lines 7120 7122) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L7120(lines 7120 7122) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L11059-3(line 11059) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L11059-2(line 11059) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L11059-5(line 11059) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L854 garLoopResultBuilder]: At program point L11059-4(line 11059) the Hoare annotation is: false [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L7112(lines 7112 7125) no Hoare annotation was computed. [2021-11-16 21:03:49,809 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-11-16 21:03:49,810 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-11-16 21:03:49,810 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-11-16 21:03:49,810 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-11-16 21:03:49,810 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-11-16 21:03:49,810 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-11-16 21:03:49,815 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:03:49,816 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-16 21:03:49,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 09:03:49 BoogieIcfgContainer [2021-11-16 21:03:49,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-16 21:03:49,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-16 21:03:49,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-16 21:03:49,847 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-16 21:03:49,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:02:22" (3/4) ... [2021-11-16 21:03:49,851 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-16 21:03:49,869 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2021-11-16 21:03:49,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-11-16 21:03:49,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_array_eq [2021-11-16 21:03:49,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-11-16 21:03:49,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-11-16 21:03:49,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-16 21:03:49,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-16 21:03:49,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_c_string_is_valid [2021-11-16 21:03:49,870 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-11-16 21:03:49,871 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-11-16 21:03:49,883 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2021-11-16 21:03:49,884 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-16 21:03:49,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-16 21:03:49,885 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-16 21:03:49,913 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(max_size) == max_size || max_size == 96) && !(str == 0)) && !(\old(max_size) == 96)) && !(\result == 0) [2021-11-16 21:03:50,024 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-11-16 21:03:50,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-16 21:03:50,025 INFO L158 Benchmark]: Toolchain (without parser) took 90272.62ms. Allocated memory was 83.9MB in the beginning and 457.2MB in the end (delta: 373.3MB). Free memory was 41.9MB in the beginning and 270.3MB in the end (delta: -228.4MB). Peak memory consumption was 143.8MB. Max. memory is 16.1GB. [2021-11-16 21:03:50,025 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory was 32.9MB in the beginning and 32.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-16 21:03:50,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1980.89ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 59.6MB in the beginning and 40.4MB in the end (delta: 19.3MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. [2021-11-16 21:03:50,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 225.78ms. Allocated memory is still 121.6MB. Free memory was 40.4MB in the beginning and 61.5MB in the end (delta: -21.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-16 21:03:50,026 INFO L158 Benchmark]: Boogie Preprocessor took 45.94ms. Allocated memory is still 121.6MB. Free memory was 61.5MB in the beginning and 56.1MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-16 21:03:50,026 INFO L158 Benchmark]: RCFGBuilder took 722.64ms. Allocated memory was 121.6MB in the beginning and 180.4MB in the end (delta: 58.7MB). Free memory was 56.1MB in the beginning and 118.2MB in the end (delta: -62.2MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2021-11-16 21:03:50,026 INFO L158 Benchmark]: TraceAbstraction took 87108.66ms. Allocated memory was 180.4MB in the beginning and 457.2MB in the end (delta: 276.8MB). Free memory was 117.2MB in the beginning and 343.7MB in the end (delta: -226.5MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2021-11-16 21:03:50,027 INFO L158 Benchmark]: Witness Printer took 177.66ms. Allocated memory is still 457.2MB. Free memory was 343.7MB in the beginning and 270.3MB in the end (delta: 73.4MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2021-11-16 21:03:50,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory was 32.9MB in the beginning and 32.8MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1980.89ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 59.6MB in the beginning and 40.4MB in the end (delta: 19.3MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 225.78ms. Allocated memory is still 121.6MB. Free memory was 40.4MB in the beginning and 61.5MB in the end (delta: -21.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.94ms. Allocated memory is still 121.6MB. Free memory was 61.5MB in the beginning and 56.1MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 722.64ms. Allocated memory was 121.6MB in the beginning and 180.4MB in the end (delta: 58.7MB). Free memory was 56.1MB in the beginning and 118.2MB in the end (delta: -62.2MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * TraceAbstraction took 87108.66ms. Allocated memory was 180.4MB in the beginning and 457.2MB in the end (delta: 276.8MB). Free memory was 117.2MB in the beginning and 343.7MB in the end (delta: -226.5MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. * Witness Printer took 177.66ms. Allocated memory is still 457.2MB. Free memory was 343.7MB in the beginning and 270.3MB in the end (delta: 73.4MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 87.0s, OverallIterations: 11, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1101 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 992 mSDsluCounter, 13242 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11764 mSDsCounter, 544 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2564 IncrementalHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 544 mSolverCounterUnsat, 1478 mSDtfsCounter, 2564 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1979 GetRequests, 1644 SyntacticMatches, 26 SemanticMatches, 309 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1489 ImplicationChecksByTransitivity, 69.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=10, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 235 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 42 LocationsWithAnnotation, 207 PreInvPairs, 215 NumberOfFragments, 227 HoareAnnotationTreeSize, 207 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 42 FomulaSimplificationsInter, 218 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 79.4s InterpolantComputationTime, 2421 NumberOfCodeBlocks, 2421 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2671 ConstructedInterpolants, 91 QuantifiedInterpolants, 16584 SizeOfPredicates, 138 NumberOfNonLiveVariables, 8582 ConjunctsInSsa, 373 ConjunctsInUnsatCore, 22 InterpolantComputations, 10 PerfectInterpolantSequences, 2351/2644 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6819]: Loop Invariant Derived loop invariant: (((\old(max_size) == max_size || max_size == 96) && !(str == 0)) && !(\old(max_size) == 96)) && !(\result == 0) - InvariantResult [Line: 10803]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11056]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10810]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11328]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-16 21:03:50,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE