./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:53:08,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:53:08,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:53:08,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:53:08,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:53:08,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:53:08,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:53:08,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:53:08,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:53:08,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:53:08,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:53:08,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:53:08,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:53:08,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:53:08,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:53:08,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:53:08,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:53:08,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:53:08,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:53:08,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:53:08,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:53:08,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:53:08,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:53:08,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:53:08,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:53:08,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:53:08,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:53:08,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:53:08,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:53:08,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:53:08,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:53:08,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:53:08,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:53:08,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:53:08,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:53:08,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:53:08,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:53:08,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:53:08,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:53:08,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:53:08,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:53:08,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 05:53:08,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:53:08,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:53:08,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:53:08,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:53:08,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:53:08,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:53:08,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:53:08,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:53:08,532 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:53:08,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:53:08,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:53:08,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:53:08,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:53:08,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:53:08,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:53:08,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:53:08,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:53:08,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:53:08,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:53:08,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:53:08,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:53:08,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:53:08,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:53:08,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:53:08,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:53:08,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:53:08,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:53:08,538 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:53:08,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:53:08,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:53:08,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:53:08,540 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d67b4b463cf9b59771b705723a66a102d698cbc5859334aa26ed48a8838f7285 [2021-11-20 05:53:08,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:53:08,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:53:08,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:53:08,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:53:08,855 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:53:08,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-20 05:53:08,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/data/0b203c9b5/7e54d13f1926468880a9cbf055e4e697/FLAG6c2d53ff2 [2021-11-20 05:53:09,666 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:53:09,666 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i [2021-11-20 05:53:09,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/data/0b203c9b5/7e54d13f1926468880a9cbf055e4e697/FLAG6c2d53ff2 [2021-11-20 05:53:09,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/data/0b203c9b5/7e54d13f1926468880a9cbf055e4e697 [2021-11-20 05:53:09,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:53:09,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:53:09,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:53:09,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:53:09,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:53:09,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:09" (1/1) ... [2021-11-20 05:53:09,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ababccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:09, skipping insertion in model container [2021-11-20 05:53:09,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:09" (1/1) ... [2021-11-20 05:53:09,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:53:09,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:53:10,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-20 05:53:10,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-20 05:53:11,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,074 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,078 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,108 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,111 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,123 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,320 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 05:53:11,322 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 05:53:11,324 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 05:53:11,326 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 05:53:11,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 05:53:11,328 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 05:53:11,329 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 05:53:11,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 05:53:11,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 05:53:11,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 05:53:11,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:53:11,433 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:53:11,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4531,4544] [2021-11-20 05:53:11,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/sv-benchmarks/c/aws-c-common/memcpy_using_uint64_harness.i[4591,4604] [2021-11-20 05:53:11,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,515 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,516 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,519 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,521 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,522 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,522 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 05:53:11,562 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 05:53:11,563 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 05:53:11,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 05:53:11,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 05:53:11,567 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 05:53:11,568 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 05:53:11,569 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 05:53:11,569 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 05:53:11,570 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 05:53:11,571 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 05:53:11,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:53:11,758 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:53:11,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11 WrapperNode [2021-11-20 05:53:11,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:53:11,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:53:11,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:53:11,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:53:11,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:11,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:11,922 INFO L137 Inliner]: procedures = 593, calls = 627, calls flagged for inlining = 39, calls inlined = 6, statements flattened = 137 [2021-11-20 05:53:11,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:53:11,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:53:11,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:53:11,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:53:11,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:11,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:11,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:11,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:11,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:11,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:11,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:11,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:53:11,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:53:11,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:53:11,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:53:11,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (1/1) ... [2021-11-20 05:53:12,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:53:12,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:12,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:53:12,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:53:12,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:53:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:53:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:53:12,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:53:12,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:53:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:53:12,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:53:12,089 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 05:53:12,089 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 05:53:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:53:12,091 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-20 05:53:12,092 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-20 05:53:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:53:12,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:53:12,329 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:53:12,330 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:53:12,555 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:53:12,566 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:53:12,566 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 05:53:12,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:12 BoogieIcfgContainer [2021-11-20 05:53:12,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:53:12,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:53:12,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:53:12,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:53:12,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:53:09" (1/3) ... [2021-11-20 05:53:12,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e60ab64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:12, skipping insertion in model container [2021-11-20 05:53:12,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11" (2/3) ... [2021-11-20 05:53:12,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e60ab64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:12, skipping insertion in model container [2021-11-20 05:53:12,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:12" (3/3) ... [2021-11-20 05:53:12,579 INFO L111 eAbstractionObserver]: Analyzing ICFG memcpy_using_uint64_harness.i [2021-11-20 05:53:12,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:53:12,595 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:53:12,646 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:53:12,653 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:53:12,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:53:12,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-20 05:53:12,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 05:53:12,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:12,680 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:12,680 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:12,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:12,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1463681059, now seen corresponding path program 1 times [2021-11-20 05:53:12,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:12,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058193038] [2021-11-20 05:53:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:12,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:12,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:53:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-20 05:53:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 05:53:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 05:53:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 05:53:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 05:53:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 05:53:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-20 05:53:13,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:13,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058193038] [2021-11-20 05:53:13,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058193038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:13,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:13,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:53:13,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473591712] [2021-11-20 05:53:13,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:13,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:53:13,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:13,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:53:13,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:53:13,261 INFO L87 Difference]: Start difference. First operand has 63 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 05:53:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:13,287 INFO L93 Difference]: Finished difference Result 122 states and 176 transitions. [2021-11-20 05:53:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:53:13,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2021-11-20 05:53:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:13,297 INFO L225 Difference]: With dead ends: 122 [2021-11-20 05:53:13,297 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 05:53:13,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:53:13,304 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:13,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 05:53:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-20 05:53:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 43 states have internal predecessors, (53), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 05:53:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2021-11-20 05:53:13,346 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 66 [2021-11-20 05:53:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:13,346 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2021-11-20 05:53:13,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 05:53:13,347 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2021-11-20 05:53:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 05:53:13,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:13,351 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:13,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:53:13,351 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:13,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1147031271, now seen corresponding path program 1 times [2021-11-20 05:53:13,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:13,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481759728] [2021-11-20 05:53:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:13,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 05:53:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-20 05:53:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 05:53:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 05:53:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-11-20 05:53:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 05:53:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 05:53:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-20 05:53:13,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:13,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481759728] [2021-11-20 05:53:13,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481759728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:13,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:13,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:13,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561490089] [2021-11-20 05:53:13,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:13,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:13,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:13,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:13,523 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 05:53:13,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:13,543 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2021-11-20 05:53:13,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:13,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2021-11-20 05:53:13,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:13,558 INFO L225 Difference]: With dead ends: 112 [2021-11-20 05:53:13,562 INFO L226 Difference]: Without dead ends: 59 [2021-11-20 05:53:13,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:13,565 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 1 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:13,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 142 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:13,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-20 05:53:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-11-20 05:53:13,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.255813953488372) internal successors, (54), 44 states have internal predecessors, (54), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 05:53:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2021-11-20 05:53:13,582 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 66 [2021-11-20 05:53:13,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:13,583 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2021-11-20 05:53:13,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 05:53:13,584 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2021-11-20 05:53:13,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 05:53:13,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:13,586 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:13,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:53:13,587 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash 824593321, now seen corresponding path program 1 times [2021-11-20 05:53:13,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:13,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613937836] [2021-11-20 05:53:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:13,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-20 05:53:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:53:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 05:53:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 05:53:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-20 05:53:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 05:53:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 05:53:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-20 05:53:13,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:13,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613937836] [2021-11-20 05:53:13,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613937836] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:13,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360780370] [2021-11-20 05:53:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:13,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:13,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:13,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:13,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:53:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:13,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-20 05:53:14,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-20 05:53:14,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360780370] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:14,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:53:14,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-20 05:53:14,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513262655] [2021-11-20 05:53:14,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:14,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:53:14,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:53:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:53:14,344 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-20 05:53:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:14,387 INFO L93 Difference]: Finished difference Result 117 states and 153 transitions. [2021-11-20 05:53:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:53:14,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2021-11-20 05:53:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:14,389 INFO L225 Difference]: With dead ends: 117 [2021-11-20 05:53:14,389 INFO L226 Difference]: Without dead ends: 64 [2021-11-20 05:53:14,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:53:14,391 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 6 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:14,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 212 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-20 05:53:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-20 05:53:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 50 states have internal predecessors, (60), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 05:53:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2021-11-20 05:53:14,401 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 68 [2021-11-20 05:53:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:14,402 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2021-11-20 05:53:14,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-20 05:53:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2021-11-20 05:53:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-20 05:53:14,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:14,404 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:14,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:14,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:14,631 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash -615657745, now seen corresponding path program 2 times [2021-11-20 05:53:14,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:14,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262502737] [2021-11-20 05:53:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:14,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:53:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:53:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 05:53:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 05:53:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 05:53:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 05:53:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 05:53:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-20 05:53:14,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:14,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262502737] [2021-11-20 05:53:14,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262502737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:14,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384128100] [2021-11-20 05:53:14,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:14,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:14,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:14,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:14,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:53:15,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 05:53:15,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:15,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 05:53:15,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-20 05:53:15,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:15,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384128100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:15,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:15,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-20 05:53:15,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391241362] [2021-11-20 05:53:15,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:15,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:53:15,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:53:15,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:53:15,482 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 05:53:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:15,648 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2021-11-20 05:53:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:53:15,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 74 [2021-11-20 05:53:15,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:15,654 INFO L225 Difference]: With dead ends: 70 [2021-11-20 05:53:15,654 INFO L226 Difference]: Without dead ends: 66 [2021-11-20 05:53:15,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:53:15,658 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:15,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 241 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-20 05:53:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-11-20 05:53:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 51 states have (on average 1.196078431372549) internal successors, (61), 51 states have internal predecessors, (61), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 05:53:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-11-20 05:53:15,680 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 74 [2021-11-20 05:53:15,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:15,682 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-11-20 05:53:15,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-20 05:53:15,682 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2021-11-20 05:53:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-20 05:53:15,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:15,684 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 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] [2021-11-20 05:53:15,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:15,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:15,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash -694003548, now seen corresponding path program 1 times [2021-11-20 05:53:15,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:15,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583793239] [2021-11-20 05:53:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:15,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-20 05:53:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 05:53:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-20 05:53:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-20 05:53:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 05:53:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 05:53:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 05:53:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 05:53:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 05:53:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 05:53:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 05:53:16,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:16,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583793239] [2021-11-20 05:53:16,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583793239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:16,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748450879] [2021-11-20 05:53:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:16,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:16,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:16,147 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:16,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:53:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:16,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:53:16,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-20 05:53:16,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 05:53:16,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748450879] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:16,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:53:16,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-20 05:53:16,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982172892] [2021-11-20 05:53:16,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:16,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:53:16,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:16,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:53:16,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:53:16,767 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-20 05:53:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:16,837 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2021-11-20 05:53:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:53:16,841 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 91 [2021-11-20 05:53:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:16,842 INFO L225 Difference]: With dead ends: 133 [2021-11-20 05:53:16,842 INFO L226 Difference]: Without dead ends: 78 [2021-11-20 05:53:16,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:53:16,846 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 10 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:16,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 352 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-20 05:53:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-20 05:53:16,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 63 states have internal predecessors, (73), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 05:53:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-11-20 05:53:16,863 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 91 [2021-11-20 05:53:16,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:16,863 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-11-20 05:53:16,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-20 05:53:16,864 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-11-20 05:53:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-20 05:53:16,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:16,867 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 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] [2021-11-20 05:53:16,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:17,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:17,091 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:17,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:17,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1419325160, now seen corresponding path program 2 times [2021-11-20 05:53:17,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:17,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135301204] [2021-11-20 05:53:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:17,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-20 05:53:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 05:53:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-11-20 05:53:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 05:53:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 05:53:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 05:53:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 05:53:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 05:53:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-20 05:53:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-20 05:53:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 05:53:17,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:17,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135301204] [2021-11-20 05:53:17,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135301204] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:17,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893772638] [2021-11-20 05:53:17,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:17,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:17,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:17,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:17,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:53:17,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:53:17,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:17,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 05:53:17,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-20 05:53:17,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 05:53:18,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893772638] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:18,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:53:18,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-20 05:53:18,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376371002] [2021-11-20 05:53:18,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:18,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 05:53:18,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:18,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 05:53:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-20 05:53:18,242 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-20 05:53:18,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:18,362 INFO L93 Difference]: Finished difference Result 157 states and 200 transitions. [2021-11-20 05:53:18,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 05:53:18,363 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 103 [2021-11-20 05:53:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:18,364 INFO L225 Difference]: With dead ends: 157 [2021-11-20 05:53:18,364 INFO L226 Difference]: Without dead ends: 102 [2021-11-20 05:53:18,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-20 05:53:18,367 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 33 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:18,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 212 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-20 05:53:18,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-11-20 05:53:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 87 states have internal predecessors, (97), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 05:53:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-11-20 05:53:18,394 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 103 [2021-11-20 05:53:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:18,395 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-11-20 05:53:18,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-20 05:53:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-11-20 05:53:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 05:53:18,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:18,403 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 8, 8, 8, 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] [2021-11-20 05:53:18,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:18,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:18,623 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:18,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1263900672, now seen corresponding path program 3 times [2021-11-20 05:53:18,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:18,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451276900] [2021-11-20 05:53:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:18,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:53:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 05:53:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 05:53:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:53:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 05:53:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 05:53:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 05:53:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 05:53:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 05:53:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 05:53:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-20 05:53:19,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:19,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451276900] [2021-11-20 05:53:19,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451276900] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:19,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170873068] [2021-11-20 05:53:19,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:53:19,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:19,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:19,151 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:19,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:53:20,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-20 05:53:20,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:20,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 05:53:20,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2021-11-20 05:53:21,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:21,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170873068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:21,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:21,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [25] total 31 [2021-11-20 05:53:21,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72759404] [2021-11-20 05:53:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:21,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:53:21,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:53:21,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=617, Unknown=0, NotChecked=0, Total=930 [2021-11-20 05:53:21,081 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 05:53:21,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:21,321 INFO L93 Difference]: Finished difference Result 146 states and 174 transitions. [2021-11-20 05:53:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:53:21,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 127 [2021-11-20 05:53:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:21,324 INFO L225 Difference]: With dead ends: 146 [2021-11-20 05:53:21,324 INFO L226 Difference]: Without dead ends: 104 [2021-11-20 05:53:21,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=329, Invalid=793, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 05:53:21,325 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 83 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:21,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 445 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-20 05:53:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2021-11-20 05:53:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 88 states have (on average 1.1136363636363635) internal successors, (98), 88 states have internal predecessors, (98), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 05:53:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-11-20 05:53:21,343 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 127 [2021-11-20 05:53:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:21,345 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-11-20 05:53:21,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-20 05:53:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-11-20 05:53:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-20 05:53:21,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:21,348 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 8, 8, 8, 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] [2021-11-20 05:53:21,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:21,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:21,555 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:21,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:21,555 INFO L85 PathProgramCache]: Analyzing trace with hash 385852158, now seen corresponding path program 1 times [2021-11-20 05:53:21,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:21,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71920028] [2021-11-20 05:53:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:21,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 05:53:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 05:53:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 05:53:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 05:53:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 05:53:22,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 05:53:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 05:53:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 05:53:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 05:53:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 05:53:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-20 05:53:22,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:22,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71920028] [2021-11-20 05:53:22,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71920028] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:22,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025527660] [2021-11-20 05:53:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:22,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:22,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:22,094 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:22,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:53:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:22,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 05:53:22,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:22,500 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-20 05:53:22,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 2 proven. 484 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-20 05:53:23,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025527660] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:23,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:53:23,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-11-20 05:53:23,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933603396] [2021-11-20 05:53:23,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:23,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-20 05:53:23,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:23,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-20 05:53:23,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 05:53:23,482 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 49 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 49 states have internal predecessors, (143), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-20 05:53:23,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:23,691 INFO L93 Difference]: Finished difference Result 207 states and 262 transitions. [2021-11-20 05:53:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-20 05:53:23,692 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 49 states have internal predecessors, (143), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 129 [2021-11-20 05:53:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:23,694 INFO L225 Difference]: With dead ends: 207 [2021-11-20 05:53:23,694 INFO L226 Difference]: Without dead ends: 151 [2021-11-20 05:53:23,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 05:53:23,696 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 69 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:23,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 492 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:53:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-20 05:53:23,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-20 05:53:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.0735294117647058) internal successors, (146), 136 states have internal predecessors, (146), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 05:53:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2021-11-20 05:53:23,708 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 129 [2021-11-20 05:53:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:23,709 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2021-11-20 05:53:23,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.9183673469387754) internal successors, (143), 49 states have internal predecessors, (143), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-20 05:53:23,709 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2021-11-20 05:53:23,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-20 05:53:23,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:23,712 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 8, 8, 8, 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] [2021-11-20 05:53:23,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:23,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 05:53:23,939 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:23,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:23,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2057415474, now seen corresponding path program 2 times [2021-11-20 05:53:23,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:23,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626087920] [2021-11-20 05:53:23,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:23,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 05:53:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 05:53:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 05:53:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 05:53:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 05:53:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 05:53:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-20 05:53:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-20 05:53:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-20 05:53:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-20 05:53:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-20 05:53:25,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:25,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626087920] [2021-11-20 05:53:25,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626087920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:25,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756970245] [2021-11-20 05:53:25,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:25,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:25,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:25,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:25,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:53:25,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:53:25,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:25,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-20 05:53:25,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-20 05:53:26,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2231 backedges. 2 proven. 2116 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-20 05:53:29,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756970245] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:29,085 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:53:29,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2021-11-20 05:53:29,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337286595] [2021-11-20 05:53:29,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:29,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-20 05:53:29,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:29,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-20 05:53:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-11-20 05:53:29,094 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 97 states, 97 states have (on average 2.463917525773196) internal successors, (239), 97 states have internal predecessors, (239), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-20 05:53:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:29,662 INFO L93 Difference]: Finished difference Result 303 states and 382 transitions. [2021-11-20 05:53:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-20 05:53:29,663 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.463917525773196) internal successors, (239), 97 states have internal predecessors, (239), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 177 [2021-11-20 05:53:29,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:29,665 INFO L225 Difference]: With dead ends: 303 [2021-11-20 05:53:29,665 INFO L226 Difference]: Without dead ends: 247 [2021-11-20 05:53:29,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-11-20 05:53:29,671 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 94 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:29,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 352 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:53:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-20 05:53:29,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-11-20 05:53:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 232 states have (on average 1.043103448275862) internal successors, (242), 232 states have internal predecessors, (242), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-20 05:53:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 263 transitions. [2021-11-20 05:53:29,691 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 263 transitions. Word has length 177 [2021-11-20 05:53:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:29,692 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 263 transitions. [2021-11-20 05:53:29,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.463917525773196) internal successors, (239), 97 states have internal predecessors, (239), 1 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2021-11-20 05:53:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 263 transitions. [2021-11-20 05:53:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-20 05:53:29,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:29,698 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 8, 8, 8, 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] [2021-11-20 05:53:29,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:29,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:29,911 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:29,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:29,911 INFO L85 PathProgramCache]: Analyzing trace with hash 959518830, now seen corresponding path program 3 times [2021-11-20 05:53:29,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:29,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530744699] [2021-11-20 05:53:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:29,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-20 05:53:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-11-20 05:53:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-20 05:53:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-20 05:53:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-11-20 05:53:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-20 05:53:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-11-20 05:53:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-20 05:53:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-20 05:53:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-11-20 05:53:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8951 backedges. 2 proven. 8836 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-20 05:53:33,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:33,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530744699] [2021-11-20 05:53:33,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530744699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:33,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991844567] [2021-11-20 05:53:33,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:53:33,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:33,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:33,779 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:33,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f494cd-1bee-4667-b6f5-410054b3bba1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 05:53:36,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-20 05:53:36,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:36,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-20 05:53:36,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:36,321 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 05:53:36,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 05:53:39,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 05:53:39,993 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-20 05:53:40,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2021-11-20 05:53:41,502 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_12| Int)) (and (not (= |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_12|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_1|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_12|) 0)))) is different from true [2021-11-20 05:53:42,725 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_13| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_13|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2|) 0)) (not (= |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_13|)))) is different from true [2021-11-20 05:53:43,866 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_14|) 0) (select (select |c_#memory_int| |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3|) 0)) (not (= |v_ULTIMATE.start_memcpy_using_uint64_impl_~src#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_memcpy_using_uint64_harness_~#d1~0#1.base_BEFORE_CALL_14|)))) is different from true [2021-11-20 05:53:44,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2021-11-20 05:53:44,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 57 [2021-11-20 05:53:44,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 78 [2021-11-20 05:53:44,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:44,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 99 [2021-11-20 05:53:45,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 28 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 120 [2021-11-20 05:53:45,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:53:45,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:53:45,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:53:45,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:53:45,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:53:45,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:53:45,588 INFO L354 Elim1Store]: treesize reduction 65, result has 9.7 percent of original size [2021-11-20 05:53:45,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 19 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 52 case distinctions, treesize of input 100 treesize of output 128 [2021-11-20 05:53:48,548 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2| Int) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| Int)) (let ((.cse0 (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|))) (let ((.cse2 (select .cse0 0)) (.cse1 (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|))) (and (= (select .cse0 5) (select .cse1 5)) (= (select .cse0 3) (select .cse1 3)) (= (select .cse0 2) (select .cse1 2)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|) 0) .cse2) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2|)) (= (select .cse1 0) .cse2) (= (select .cse0 4) (select .cse1 4)) (= (select .cse0 1) (select .cse1 1)) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|)) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_2|)))))) is different from true [2021-11-20 05:53:51,430 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3| Int) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| Int)) (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|))) (let ((.cse2 (select .cse1 0)) (.cse0 (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|))) (and (= (select .cse0 3) (select .cse1 3)) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|)) (= .cse2 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|) 0)) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_3|)) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_3|)) (= (select .cse1 1) (select .cse0 1)) (= (select .cse0 4) (select .cse1 4)) (= (select .cse0 0) .cse2) (= (select .cse1 5) (select .cse0 5)) (= (select .cse1 2) (select .cse0 2)))))) is different from true [2021-11-20 05:53:54,221 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| Int) (|ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| Int)) (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|))) (let ((.cse2 (select .cse1 0)) (.cse0 (select |c_#memory_int| |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base|))) (and (= (select .cse0 4) (select .cse1 4)) (= (select .cse1 2) (select .cse0 2)) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|)) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|)) (= (select .cse1 1) (select .cse0 1)) (= (select .cse0 3) (select .cse1 3)) (= .cse2 (select (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|) 0)) (= (select .cse0 0) .cse2) (not (= |ULTIMATE.start_memcpy_using_uint64_impl_~s~0#1.base| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|)) (= (select .cse1 5) (select .cse0 5)))))) is different from true [2021-11-20 05:53:59,871 INFO L354 Elim1Store]: treesize reduction 1222, result has 0.6 percent of original size [2021-11-20 05:53:59,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 17 select indices, 17 select index equivalence classes, 15 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 241 treesize of output 139 [2021-11-20 05:54:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 8951 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 8860 trivial. 26 not checked. [2021-11-20 05:54:00,215 INFO L328 TraceCheckSpWp]: Computing backward predicates...