./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8 --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 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:13:34,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:13:34,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:13:34,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:13:34,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:13:34,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:13:34,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:13:34,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:13:34,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:13:34,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:13:34,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:13:34,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:13:34,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:13:34,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:13:34,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:13:34,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:13:34,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:13:34,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:13:34,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:13:34,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:13:34,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:13:34,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:13:34,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:13:34,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:13:34,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:13:34,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:13:34,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:13:34,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:13:34,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:13:34,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:13:34,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:13:34,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:13:34,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:13:34,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:13:34,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:13:34,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:13:34,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:13:34,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:13:34,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:13:34,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:13:34,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:13:34,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 22:13:34,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:13:34,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:13:34,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:13:34,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:13:34,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:13:34,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:13:34,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:13:34,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:13:34,726 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:13:34,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:13:34,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:13:34,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:13:34,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:13:34,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:13:34,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:13:34,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:13:34,727 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:13:34,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:13:34,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:13:34,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:13:34,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:13:34,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:13:34,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:13:34,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:13:34,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:13:34,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:13:34,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:13:34,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:13:34,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:13:34,730 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:13:34,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:13:34,730 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:13:34,731 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 [2022-12-13 22:13:34,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:13:34,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:13:34,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:13:34,924 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:13:34,924 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:13:34,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2022-12-13 22:13:37,598 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:13:37,900 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:13:37,901 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2022-12-13 22:13:37,922 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/data/3d1a40c36/4710115ba64d43aab427396fa6d75c48/FLAGdf8b8ea61 [2022-12-13 22:13:37,933 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/data/3d1a40c36/4710115ba64d43aab427396fa6d75c48 [2022-12-13 22:13:37,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:13:37,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:13:37,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:13:37,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:13:37,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:13:37,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:13:37" (1/1) ... [2022-12-13 22:13:37,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c9e65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:37, skipping insertion in model container [2022-12-13 22:13:37,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:13:37" (1/1) ... [2022-12-13 22:13:37,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:13:38,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:13:38,175 WARN L237 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_e2cf3c94-adce-4297-9cc0-2922b03accd0/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2022-12-13 22:13:38,182 WARN L237 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_e2cf3c94-adce-4297-9cc0-2922b03accd0/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2022-12-13 22:13:38,818 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:38,818 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:38,819 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:38,819 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:38,820 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:38,831 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:38,831 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:38,833 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:38,833 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:38,905 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 22:13:38,906 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 22:13:38,906 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 22:13:38,910 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 22:13:38,912 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 22:13:38,912 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 22:13:39,162 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 22:13:39,162 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 22:13:39,163 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 22:13:39,164 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 22:13:39,165 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 22:13:39,166 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 22:13:39,166 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 22:13:39,167 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 22:13:39,167 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 22:13:39,168 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 22:13:39,168 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 22:13:39,307 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 22:13:39,324 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 22:13:39,350 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 22:13:39,360 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 22:13:39,385 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 22:13:39,392 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,393 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:13:39,445 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:13:39,454 WARN L237 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_e2cf3c94-adce-4297-9cc0-2922b03accd0/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2022-12-13 22:13:39,454 WARN L237 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_e2cf3c94-adce-4297-9cc0-2922b03accd0/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2022-12-13 22:13:39,478 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,478 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,479 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,479 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,479 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,483 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,483 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,484 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,484 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,488 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 22:13:39,489 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 22:13:39,489 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 22:13:39,491 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 22:13:39,492 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 22:13:39,492 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 22:13:39,504 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 22:13:39,504 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 22:13:39,505 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 22:13:39,505 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 22:13:39,506 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 22:13:39,506 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 22:13:39,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 22:13:39,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 22:13:39,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 22:13:39,508 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 22:13:39,508 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 22:13:39,522 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 22:13:39,531 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 22:13:39,542 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 22:13:39,545 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 22:13:39,557 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 22:13:39,561 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,561 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 22:13:39,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:13:39,737 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:13:39,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39 WrapperNode [2022-12-13 22:13:39,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:13:39,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:13:39,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:13:39,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:13:39,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,866 INFO L138 Inliner]: procedures = 681, calls = 2271, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 369 [2022-12-13 22:13:39,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:13:39,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:13:39,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:13:39,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:13:39,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,913 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:13:39,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:13:39,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:13:39,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:13:39,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (1/1) ... [2022-12-13 22:13:39,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:13:39,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:39,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:13:39,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:13:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-12-13 22:13:39,986 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-12-13 22:13:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2022-12-13 22:13:39,986 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2022-12-13 22:13:39,986 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2022-12-13 22:13:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2022-12-13 22:13:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 22:13:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 22:13:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:13:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 22:13:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 22:13:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 22:13:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:13:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 22:13:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:13:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:13:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 22:13:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 22:13:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 22:13:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 22:13:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 22:13:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-13 22:13:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-13 22:13:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-13 22:13:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-13 22:13:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:13:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:13:40,182 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:13:40,184 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:13:40,512 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:13:40,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:13:40,519 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 22:13:40,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:13:40 BoogieIcfgContainer [2022-12-13 22:13:40,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:13:40,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:13:40,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:13:40,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:13:40,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:13:37" (1/3) ... [2022-12-13 22:13:40,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e85720d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:13:40, skipping insertion in model container [2022-12-13 22:13:40,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:13:39" (2/3) ... [2022-12-13 22:13:40,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e85720d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:13:40, skipping insertion in model container [2022-12-13 22:13:40,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:13:40" (3/3) ... [2022-12-13 22:13:40,529 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_ignore_case_harness.i [2022-12-13 22:13:40,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:13:40,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:13:40,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:13:40,589 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23bf1ebf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:13:40,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 22:13:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 64 states have (on average 1.265625) internal successors, (81), 65 states have internal predecessors, (81), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 22:13:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 22:13:40,600 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:40,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:40,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:40,605 INFO L85 PathProgramCache]: Analyzing trace with hash -140199032, now seen corresponding path program 1 times [2022-12-13 22:13:40,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:40,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306806910] [2022-12-13 22:13:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:40,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:40,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 22:13:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:13:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 22:13:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:40,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 22:13:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:40,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 22:13:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 22:13:40,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:40,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306806910] [2022-12-13 22:13:40,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306806910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:40,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:13:40,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:13:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645879035] [2022-12-13 22:13:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:41,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 22:13:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 22:13:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 22:13:41,033 INFO L87 Difference]: Start difference. First operand has 98 states, 64 states have (on average 1.265625) internal successors, (81), 65 states have internal predecessors, (81), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 22:13:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:41,062 INFO L93 Difference]: Finished difference Result 191 states and 259 transitions. [2022-12-13 22:13:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 22:13:41,064 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2022-12-13 22:13:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:41,073 INFO L225 Difference]: With dead ends: 191 [2022-12-13 22:13:41,073 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 22:13:41,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 22:13:41,080 INFO L413 NwaCegarLoop]: 124 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, 124 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 [2022-12-13 22:13:41,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:13:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 22:13:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-12-13 22:13:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 61 states have internal predecessors, (73), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 22:13:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2022-12-13 22:13:41,122 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 48 [2022-12-13 22:13:41,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:41,123 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2022-12-13 22:13:41,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 22:13:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2022-12-13 22:13:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 22:13:41,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:41,126 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:41,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:13:41,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1767103160, now seen corresponding path program 1 times [2022-12-13 22:13:41,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:41,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675019383] [2022-12-13 22:13:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:41,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:41,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 22:13:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 22:13:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:41,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 22:13:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 22:13:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:41,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 22:13:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 22:13:41,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:41,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675019383] [2022-12-13 22:13:41,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675019383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:41,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:13:41,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:13:41,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291559308] [2022-12-13 22:13:41,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:41,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:13:41,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:41,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:13:41,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:13:41,429 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 22:13:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:41,469 INFO L93 Difference]: Finished difference Result 137 states and 179 transitions. [2022-12-13 22:13:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:13:41,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2022-12-13 22:13:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:41,471 INFO L225 Difference]: With dead ends: 137 [2022-12-13 22:13:41,471 INFO L226 Difference]: Without dead ends: 93 [2022-12-13 22:13:41,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:13:41,473 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 10 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:41,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 354 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:13:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-12-13 22:13:41,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-12-13 22:13:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.2) internal successors, (72), 61 states have internal predecessors, (72), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 22:13:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2022-12-13 22:13:41,484 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 48 [2022-12-13 22:13:41,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:41,484 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2022-12-13 22:13:41,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 22:13:41,485 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2022-12-13 22:13:41,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-13 22:13:41,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:41,487 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:41,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:13:41,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:41,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1847125036, now seen corresponding path program 1 times [2022-12-13 22:13:41,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:41,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132322075] [2022-12-13 22:13:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:41,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:41,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:13:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:13:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:13:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:13:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:13:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:13:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:13:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 22:13:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:13:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:13:42,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:42,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132322075] [2022-12-13 22:13:42,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132322075] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:13:42,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915760584] [2022-12-13 22:13:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:42,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:42,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:42,509 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:13:42,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:13:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:42,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 22:13:42,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:13:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 22:13:43,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:13:43,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915760584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:43,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:13:43,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 29 [2022-12-13 22:13:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144185904] [2022-12-13 22:13:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 22:13:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 22:13:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=750, Unknown=0, NotChecked=0, Total=812 [2022-12-13 22:13:43,074 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 22:13:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:43,359 INFO L93 Difference]: Finished difference Result 118 states and 149 transitions. [2022-12-13 22:13:43,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:13:43,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 82 [2022-12-13 22:13:43,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:43,361 INFO L225 Difference]: With dead ends: 118 [2022-12-13 22:13:43,361 INFO L226 Difference]: Without dead ends: 99 [2022-12-13 22:13:43,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=1096, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 22:13:43,362 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 35 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:43,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1221 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:13:43,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-13 22:13:43,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2022-12-13 22:13:43,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.203125) internal successors, (77), 66 states have internal predecessors, (77), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2022-12-13 22:13:43,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 125 transitions. [2022-12-13 22:13:43,371 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 125 transitions. Word has length 82 [2022-12-13 22:13:43,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:43,371 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 125 transitions. [2022-12-13 22:13:43,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 22:13:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 125 transitions. [2022-12-13 22:13:43,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-13 22:13:43,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:43,373 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:43,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:13:43,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:43,574 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:43,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:43,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1638495634, now seen corresponding path program 1 times [2022-12-13 22:13:43,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:43,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537183722] [2022-12-13 22:13:43,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:43,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:13:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:13:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:13:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:13:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:13:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:13:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:13:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 22:13:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:13:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,403 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 22:13:44,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:44,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537183722] [2022-12-13 22:13:44,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537183722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:13:44,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942219114] [2022-12-13 22:13:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:44,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:44,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:44,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:13:44,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:13:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:44,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 22:13:44,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:13:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 22:13:44,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:13:44,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942219114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:44,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:13:44,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 22 [2022-12-13 22:13:44,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468702695] [2022-12-13 22:13:44,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:44,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 22:13:44,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:44,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 22:13:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2022-12-13 22:13:44,694 INFO L87 Difference]: Start difference. First operand 98 states and 125 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 22:13:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:44,829 INFO L93 Difference]: Finished difference Result 150 states and 193 transitions. [2022-12-13 22:13:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:13:44,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2022-12-13 22:13:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:44,831 INFO L225 Difference]: With dead ends: 150 [2022-12-13 22:13:44,831 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 22:13:44,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-12-13 22:13:44,833 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 28 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:44,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 998 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:13:44,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 22:13:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-13 22:13:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.1875) internal successors, (76), 66 states have internal predecessors, (76), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2022-12-13 22:13:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2022-12-13 22:13:44,845 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 82 [2022-12-13 22:13:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:44,845 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2022-12-13 22:13:44,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-12-13 22:13:44,846 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2022-12-13 22:13:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 22:13:44,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:44,848 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:44,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 22:13:45,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:45,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:45,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:45,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1735619123, now seen corresponding path program 1 times [2022-12-13 22:13:45,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:45,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053986160] [2022-12-13 22:13:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:45,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:13:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:13:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:13:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:13:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:13:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:13:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:13:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:13:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:13:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:13:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 22:13:45,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:45,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053986160] [2022-12-13 22:13:45,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053986160] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:13:45,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503405227] [2022-12-13 22:13:45,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:45,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:45,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:45,900 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:13:45,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:13:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:46,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 22:13:46,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:13:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 22:13:46,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:13:46,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503405227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:46,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:13:46,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [21] total 34 [2022-12-13 22:13:46,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744574508] [2022-12-13 22:13:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:46,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 22:13:46,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:46,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 22:13:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 22:13:46,399 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 13 states have internal predecessors, (52), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-12-13 22:13:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:46,725 INFO L93 Difference]: Finished difference Result 152 states and 194 transitions. [2022-12-13 22:13:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:13:46,726 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 13 states have internal predecessors, (52), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 91 [2022-12-13 22:13:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:46,727 INFO L225 Difference]: With dead ends: 152 [2022-12-13 22:13:46,728 INFO L226 Difference]: Without dead ends: 99 [2022-12-13 22:13:46,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=1530, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 22:13:46,729 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 57 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:46,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1128 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:13:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-12-13 22:13:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2022-12-13 22:13:46,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.1875) internal successors, (76), 66 states have internal predecessors, (76), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2022-12-13 22:13:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2022-12-13 22:13:46,737 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 91 [2022-12-13 22:13:46,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:46,737 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2022-12-13 22:13:46,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 13 states have internal predecessors, (52), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-12-13 22:13:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2022-12-13 22:13:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 22:13:46,738 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:46,738 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:46,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:13:46,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:46,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:46,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:46,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1663232565, now seen corresponding path program 1 times [2022-12-13 22:13:46,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:46,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685356833] [2022-12-13 22:13:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:46,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:13:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:13:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:13:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:13:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:13:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:13:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:13:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:13:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:13:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:13:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 22:13:47,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:47,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685356833] [2022-12-13 22:13:47,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685356833] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:13:47,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436358771] [2022-12-13 22:13:47,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:47,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:47,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:47,664 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:13:47,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:13:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:47,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 22:13:47,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:13:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 22:13:47,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:13:47,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436358771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:47,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:13:47,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 26 [2022-12-13 22:13:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677965456] [2022-12-13 22:13:47,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:47,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 22:13:47,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:48,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 22:13:48,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2022-12-13 22:13:48,000 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 11 states have internal predecessors, (49), 6 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2022-12-13 22:13:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:48,211 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2022-12-13 22:13:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:13:48,212 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 11 states have internal predecessors, (49), 6 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) Word has length 91 [2022-12-13 22:13:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:48,213 INFO L225 Difference]: With dead ends: 140 [2022-12-13 22:13:48,213 INFO L226 Difference]: Without dead ends: 113 [2022-12-13 22:13:48,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2022-12-13 22:13:48,215 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 63 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:48,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1045 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:13:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-13 22:13:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 101. [2022-12-13 22:13:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 68 states have internal predecessors, (78), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 23 states have call predecessors, (25), 23 states have call successors, (25) [2022-12-13 22:13:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2022-12-13 22:13:48,227 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 91 [2022-12-13 22:13:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:48,228 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2022-12-13 22:13:48,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 11 states have internal predecessors, (49), 6 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2022-12-13 22:13:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2022-12-13 22:13:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 22:13:48,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:48,229 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:48,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:13:48,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:48,431 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:48,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2062733139, now seen corresponding path program 1 times [2022-12-13 22:13:48,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:48,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841599786] [2022-12-13 22:13:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:48,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:13:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:48,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:13:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:13:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:13:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:13:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:13:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:13:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:13:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:13:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 22:13:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 22:13:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:49,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841599786] [2022-12-13 22:13:49,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841599786] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:13:49,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610244342] [2022-12-13 22:13:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:49,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:13:49,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:13:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:49,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 22:13:49,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:13:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 22:13:49,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:13:49,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610244342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:49,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:13:49,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 20 [2022-12-13 22:13:49,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698868123] [2022-12-13 22:13:49,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:49,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:13:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:49,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:13:49,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-12-13 22:13:49,537 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 22:13:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:49,650 INFO L93 Difference]: Finished difference Result 147 states and 183 transitions. [2022-12-13 22:13:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:13:49,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 92 [2022-12-13 22:13:49,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:49,652 INFO L225 Difference]: With dead ends: 147 [2022-12-13 22:13:49,652 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 22:13:49,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-12-13 22:13:49,653 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 20 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:49,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 375 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:13:49,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 22:13:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-13 22:13:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.171875) internal successors, (75), 66 states have internal predecessors, (75), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2022-12-13 22:13:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 122 transitions. [2022-12-13 22:13:49,663 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 122 transitions. Word has length 92 [2022-12-13 22:13:49,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:49,663 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 122 transitions. [2022-12-13 22:13:49,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 22:13:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 122 transitions. [2022-12-13 22:13:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 22:13:49,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:49,664 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:49,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:13:49,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:49,865 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:49,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:49,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1221822596, now seen corresponding path program 1 times [2022-12-13 22:13:49,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:49,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802023684] [2022-12-13 22:13:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:49,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:13:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:13:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:13:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:13:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:13:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:13:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:13:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:13:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:13:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:13:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 22:13:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 22:13:50,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:50,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802023684] [2022-12-13 22:13:50,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802023684] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:13:50,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688861902] [2022-12-13 22:13:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:50,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:50,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:50,634 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:13:50,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:13:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:50,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 22:13:50,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:13:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 22:13:51,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:13:51,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688861902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:51,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:13:51,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [22] total 36 [2022-12-13 22:13:51,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669962087] [2022-12-13 22:13:51,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:51,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:13:51,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:51,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:13:51,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 22:13:51,079 INFO L87 Difference]: Start difference. First operand 98 states and 122 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 14 states have internal predecessors, (56), 6 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-13 22:13:51,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:51,356 INFO L93 Difference]: Finished difference Result 170 states and 223 transitions. [2022-12-13 22:13:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 22:13:51,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 14 states have internal predecessors, (56), 6 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 100 [2022-12-13 22:13:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:51,357 INFO L225 Difference]: With dead ends: 170 [2022-12-13 22:13:51,357 INFO L226 Difference]: Without dead ends: 117 [2022-12-13 22:13:51,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=1770, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 22:13:51,358 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 65 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:51,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1302 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:13:51,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-13 22:13:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2022-12-13 22:13:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.164179104477612) internal successors, (78), 68 states have internal predecessors, (78), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (25), 24 states have call predecessors, (25), 23 states have call successors, (25) [2022-12-13 22:13:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 127 transitions. [2022-12-13 22:13:51,364 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 127 transitions. Word has length 100 [2022-12-13 22:13:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:51,364 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 127 transitions. [2022-12-13 22:13:51,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 14 states have internal predecessors, (56), 6 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-13 22:13:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 127 transitions. [2022-12-13 22:13:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 22:13:51,365 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:51,365 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:51,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 22:13:51,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 22:13:51,566 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:51,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1283862210, now seen corresponding path program 1 times [2022-12-13 22:13:51,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:51,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490646991] [2022-12-13 22:13:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:51,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:51,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:13:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:13:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:13:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:13:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:13:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:13:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:13:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:13:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:13:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:13:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 22:13:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 22:13:52,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:52,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490646991] [2022-12-13 22:13:52,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490646991] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:13:52,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794015101] [2022-12-13 22:13:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:52,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:52,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:52,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:13:52,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:13:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:52,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 105 conjunts are in the unsatisfiable core [2022-12-13 22:13:52,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:13:52,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 22:13:54,506 INFO L321 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2022-12-13 22:13:54,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 179 treesize of output 163 [2022-12-13 22:13:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 22:13:54,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:13:54,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794015101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:54,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:13:54,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [13] total 39 [2022-12-13 22:13:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454182706] [2022-12-13 22:13:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:54,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 22:13:54,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:54,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 22:13:54,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1380, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 22:13:54,683 INFO L87 Difference]: Start difference. First operand 102 states and 127 transitions. Second operand has 29 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 7 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-13 22:13:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:57,280 INFO L93 Difference]: Finished difference Result 157 states and 196 transitions. [2022-12-13 22:13:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 22:13:57,281 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 7 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) Word has length 100 [2022-12-13 22:13:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:57,282 INFO L225 Difference]: With dead ends: 157 [2022-12-13 22:13:57,282 INFO L226 Difference]: Without dead ends: 155 [2022-12-13 22:13:57,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=197, Invalid=2665, Unknown=0, NotChecked=0, Total=2862 [2022-12-13 22:13:57,283 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 79 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:57,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1947 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 22:13:57,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-13 22:13:57,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 131. [2022-12-13 22:13:57,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 90 states have internal predecessors, (102), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-12-13 22:13:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 161 transitions. [2022-12-13 22:13:57,294 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 161 transitions. Word has length 100 [2022-12-13 22:13:57,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:57,294 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 161 transitions. [2022-12-13 22:13:57,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 7 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-13 22:13:57,294 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 161 transitions. [2022-12-13 22:13:57,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 22:13:57,295 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:57,295 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:57,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 22:13:57,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:57,496 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:57,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1263925988, now seen corresponding path program 1 times [2022-12-13 22:13:57,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:57,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884192793] [2022-12-13 22:13:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:57,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:57,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:57,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:13:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:13:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:13:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:13:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:13:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:13:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:13:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:13:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:13:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:13:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 22:13:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 22:13:58,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:58,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884192793] [2022-12-13 22:13:58,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884192793] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:13:58,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029650044] [2022-12-13 22:13:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:58,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:58,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:58,172 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:13:58,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 22:13:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:58,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:13:58,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:13:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 22:13:58,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:13:58,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029650044] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:58,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:13:58,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2022-12-13 22:13:58,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636601359] [2022-12-13 22:13:58,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:58,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:13:58,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:13:58,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-12-13 22:13:58,504 INFO L87 Difference]: Start difference. First operand 131 states and 161 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 22:13:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:13:58,596 INFO L93 Difference]: Finished difference Result 158 states and 193 transitions. [2022-12-13 22:13:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:13:58,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 101 [2022-12-13 22:13:58,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:13:58,597 INFO L225 Difference]: With dead ends: 158 [2022-12-13 22:13:58,597 INFO L226 Difference]: Without dead ends: 131 [2022-12-13 22:13:58,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-12-13 22:13:58,598 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 9 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:13:58,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 469 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:13:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-13 22:13:58,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-12-13 22:13:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 87 states have (on average 1.160919540229885) internal successors, (101), 90 states have internal predecessors, (101), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-12-13 22:13:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2022-12-13 22:13:58,608 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 101 [2022-12-13 22:13:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:13:58,609 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2022-12-13 22:13:58,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 4 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 22:13:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2022-12-13 22:13:58,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 22:13:58,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:13:58,610 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:13:58,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 22:13:58,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:58,812 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:13:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:13:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1545183322, now seen corresponding path program 1 times [2022-12-13 22:13:58,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:13:58,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638440815] [2022-12-13 22:13:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:13:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:13:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:13:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:13:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:13:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:13:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:13:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:13:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:13:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:13:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:13:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:13:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:13:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 22:13:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 22:13:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 22:13:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 22:13:59,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:13:59,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638440815] [2022-12-13 22:13:59,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638440815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:13:59,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331725936] [2022-12-13 22:13:59,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:13:59,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:13:59,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:13:59,540 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:13:59,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 22:13:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:13:59,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 22:13:59,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:13:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-13 22:13:59,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:13:59,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331725936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:13:59,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:13:59,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [22] total 27 [2022-12-13 22:13:59,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229788278] [2022-12-13 22:13:59,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:13:59,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:13:59,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:13:59,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:13:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2022-12-13 22:13:59,904 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2022-12-13 22:14:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:14:00,201 INFO L93 Difference]: Finished difference Result 140 states and 169 transitions. [2022-12-13 22:14:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 22:14:00,201 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) Word has length 114 [2022-12-13 22:14:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:14:00,203 INFO L225 Difference]: With dead ends: 140 [2022-12-13 22:14:00,203 INFO L226 Difference]: Without dead ends: 126 [2022-12-13 22:14:00,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=1090, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 22:14:00,204 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 55 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:14:00,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1288 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:14:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-13 22:14:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-12-13 22:14:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.1325301204819278) internal successors, (94), 85 states have internal predecessors, (94), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (29), 28 states have call predecessors, (29), 27 states have call successors, (29) [2022-12-13 22:14:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2022-12-13 22:14:00,213 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 114 [2022-12-13 22:14:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:14:00,214 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2022-12-13 22:14:00,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 8 states have call predecessors, (16), 5 states have call successors, (16) [2022-12-13 22:14:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2022-12-13 22:14:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 22:14:00,215 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:14:00,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:00,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 22:14:00,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:00,416 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:14:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:14:00,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1940437348, now seen corresponding path program 1 times [2022-12-13 22:14:00,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:14:00,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801923106] [2022-12-13 22:14:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:14:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 22:14:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:00,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 22:14:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:00,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:14:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 22:14:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 22:14:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 22:14:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 22:14:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 22:14:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 22:14:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 22:14:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 22:14:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 22:14:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 22:14:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 22:14:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 22:14:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 22:14:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-13 22:14:01,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:14:01,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801923106] [2022-12-13 22:14:01,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801923106] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:14:01,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700348016] [2022-12-13 22:14:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:14:01,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:01,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:14:01,209 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:14:01,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 22:14:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:14:01,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 124 conjunts are in the unsatisfiable core [2022-12-13 22:14:01,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:14:01,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 22:14:03,017 INFO L321 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2022-12-13 22:14:03,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 179 treesize of output 163 [2022-12-13 22:14:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 22:14:03,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:14:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 22:14:10,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700348016] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:14:10,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:14:10,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 28, 19] total 55 [2022-12-13 22:14:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350839567] [2022-12-13 22:14:10,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:14:10,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-13 22:14:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:14:10,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-13 22:14:10,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2795, Unknown=1, NotChecked=0, Total=2970 [2022-12-13 22:14:10,328 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 55 states, 47 states have (on average 2.851063829787234) internal successors, (134), 43 states have internal predecessors, (134), 18 states have call successors, (44), 7 states have call predecessors, (44), 12 states have return successors, (43), 18 states have call predecessors, (43), 16 states have call successors, (43) [2022-12-13 22:14:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:14:11,886 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2022-12-13 22:14:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:14:11,886 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 47 states have (on average 2.851063829787234) internal successors, (134), 43 states have internal predecessors, (134), 18 states have call successors, (44), 7 states have call predecessors, (44), 12 states have return successors, (43), 18 states have call predecessors, (43), 16 states have call successors, (43) Word has length 114 [2022-12-13 22:14:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:14:11,887 INFO L225 Difference]: With dead ends: 159 [2022-12-13 22:14:11,887 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 22:14:11,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=260, Invalid=4161, Unknown=1, NotChecked=0, Total=4422 [2022-12-13 22:14:11,888 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:14:11,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 482 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 22:14:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 22:14:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 22:14:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:14:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 22:14:11,889 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2022-12-13 22:14:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:14:11,889 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 22:14:11,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 47 states have (on average 2.851063829787234) internal successors, (134), 43 states have internal predecessors, (134), 18 states have call successors, (44), 7 states have call predecessors, (44), 12 states have return successors, (43), 18 states have call predecessors, (43), 16 states have call successors, (43) [2022-12-13 22:14:11,889 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 22:14:11,889 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 22:14:11,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 22:14:11,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 22:14:12,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:14:12,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 22:14:12,302 INFO L899 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6801 6805) no Hoare annotation was computed. [2022-12-13 22:14:12,303 INFO L899 garLoopResultBuilder]: For program point L6811-1(lines 6811 6812) no Hoare annotation was computed. [2022-12-13 22:14:12,303 INFO L895 garLoopResultBuilder]: At program point L6811(line 6811) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2022-12-13 22:14:12,303 INFO L899 garLoopResultBuilder]: For program point L6811-5(lines 6811 6812) no Hoare annotation was computed. [2022-12-13 22:14:12,303 INFO L895 garLoopResultBuilder]: At program point ensure_string_is_allocated_returnLabel#1(lines 6807 6817) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset| 0)) [2022-12-13 22:14:12,303 INFO L899 garLoopResultBuilder]: For program point L6808-1(line 6808) no Hoare annotation was computed. [2022-12-13 22:14:12,303 INFO L895 garLoopResultBuilder]: At program point L6808(line 6808) the Hoare annotation is: (let ((.cse0 (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)))) (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (or .cse0 (<= 0 (+ (div |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| 18446744073709551616) (div (+ (* (- 1) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) 15) 18446744073709551616)))) (or (<= 0 (+ (div |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616) (div (+ 15 (* (- 1) |ensure_string_is_allocated_bounded_length_~len~1#1|)) 18446744073709551616))) .cse0) (= |old(#valid)| |#valid|))) [2022-12-13 22:14:12,303 INFO L899 garLoopResultBuilder]: For program point L6811-3(line 6811) no Hoare annotation was computed. [2022-12-13 22:14:12,303 INFO L895 garLoopResultBuilder]: At program point L6811-2(line 6811) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2022-12-13 22:14:12,303 INFO L895 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-12-13 22:14:12,303 INFO L899 garLoopResultBuilder]: For program point L6803-1(line 6803) no Hoare annotation was computed. [2022-12-13 22:14:12,303 INFO L895 garLoopResultBuilder]: At program point L6803(line 6803) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-12-13 22:14:12,303 INFO L899 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2022-12-13 22:14:12,304 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 6801 6805) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-12-13 22:14:12,304 INFO L899 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6801 6805) no Hoare annotation was computed. [2022-12-13 22:14:12,304 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6883 6888) no Hoare annotation was computed. [2022-12-13 22:14:12,304 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 6883 6888) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-12-13 22:14:12,304 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6883 6888) no Hoare annotation was computed. [2022-12-13 22:14:12,304 INFO L899 garLoopResultBuilder]: For program point L6884-1(lines 6884 6886) no Hoare annotation was computed. [2022-12-13 22:14:12,304 INFO L895 garLoopResultBuilder]: At program point L6884(lines 6884 6886) the Hoare annotation is: (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-12-13 22:14:12,304 INFO L899 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2022-12-13 22:14:12,304 INFO L899 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2022-12-13 22:14:12,304 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 261) the Hoare annotation is: true [2022-12-13 22:14:12,304 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-12-13 22:14:12,304 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 210 212) the Hoare annotation is: true [2022-12-13 22:14:12,304 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-12-13 22:14:12,305 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-12-13 22:14:12,305 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6890 6892) no Hoare annotation was computed. [2022-12-13 22:14:12,305 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6890 6892) the Hoare annotation is: true [2022-12-13 22:14:12,305 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6890 6892) no Hoare annotation was computed. [2022-12-13 22:14:12,305 INFO L899 garLoopResultBuilder]: For program point L6257-2(line 6257) no Hoare annotation was computed. [2022-12-13 22:14:12,305 INFO L899 garLoopResultBuilder]: For program point L6257-3(line 6257) no Hoare annotation was computed. [2022-12-13 22:14:12,305 INFO L899 garLoopResultBuilder]: For program point L6257(line 6257) no Hoare annotation was computed. [2022-12-13 22:14:12,305 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6253 6258) no Hoare annotation was computed. [2022-12-13 22:14:12,305 INFO L899 garLoopResultBuilder]: For program point L6257-5(line 6257) no Hoare annotation was computed. [2022-12-13 22:14:12,305 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6253 6258) the Hoare annotation is: true [2022-12-13 22:14:12,306 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6253 6258) no Hoare annotation was computed. [2022-12-13 22:14:12,306 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2022-12-13 22:14:12,306 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2022-12-13 22:14:12,306 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 266) the Hoare annotation is: true [2022-12-13 22:14:12,306 INFO L899 garLoopResultBuilder]: For program point L7455-1(line 7455) no Hoare annotation was computed. [2022-12-13 22:14:12,306 INFO L895 garLoopResultBuilder]: At program point L7455(line 7455) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-12-13 22:14:12,306 INFO L895 garLoopResultBuilder]: At program point L8921(line 8921) the Hoare annotation is: false [2022-12-13 22:14:12,306 INFO L895 garLoopResultBuilder]: At program point L8921-1(line 8921) the Hoare annotation is: false [2022-12-13 22:14:12,306 INFO L899 garLoopResultBuilder]: For program point L8921-2(line 8921) no Hoare annotation was computed. [2022-12-13 22:14:12,306 INFO L899 garLoopResultBuilder]: For program point L7439(line 7439) no Hoare annotation was computed. [2022-12-13 22:14:12,307 INFO L899 garLoopResultBuilder]: For program point L7439-5(line 7439) no Hoare annotation was computed. [2022-12-13 22:14:12,307 INFO L895 garLoopResultBuilder]: At program point L7439-4(line 7439) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-12-13 22:14:12,307 INFO L899 garLoopResultBuilder]: For program point L7439-3(line 7439) no Hoare annotation was computed. [2022-12-13 22:14:12,307 INFO L895 garLoopResultBuilder]: At program point L7439-2(line 7439) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-12-13 22:14:12,307 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(line 8925) the Hoare annotation is: true [2022-12-13 22:14:12,307 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 22:14:12,307 INFO L895 garLoopResultBuilder]: At program point L8922(line 8922) the Hoare annotation is: false [2022-12-13 22:14:12,307 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 22:14:12,307 INFO L899 garLoopResultBuilder]: For program point L8918-1(line 8918) no Hoare annotation was computed. [2022-12-13 22:14:12,307 INFO L899 garLoopResultBuilder]: For program point L8922-1(line 8922) no Hoare annotation was computed. [2022-12-13 22:14:12,308 INFO L895 garLoopResultBuilder]: At program point L8918(line 8918) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-12-13 22:14:12,308 INFO L895 garLoopResultBuilder]: At program point L7440-2(line 7440) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-12-13 22:14:12,308 INFO L899 garLoopResultBuilder]: For program point L7440(line 7440) no Hoare annotation was computed. [2022-12-13 22:14:12,308 INFO L899 garLoopResultBuilder]: For program point L7440-5(line 7440) no Hoare annotation was computed. [2022-12-13 22:14:12,308 INFO L895 garLoopResultBuilder]: At program point L7440-4(line 7440) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0))) (or (and .cse0 (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (not .cse0) (<= 0 |ULTIMATE.start_aws_string_eq_ignore_case_~a#1.offset|) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|) (not (= |ULTIMATE.start_aws_string_eq_ignore_case_~a#1.base| 0)) (= |ULTIMATE.start_aws_string_eq_ignore_case_~b#1.offset| |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|) |ULTIMATE.start_aws_string_eq_ignore_case_#t~short684#1| (= |ULTIMATE.start_aws_string_eq_ignore_case_~b#1.base| 0) (<= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset|) (= |ULTIMATE.start_aws_string_eq_ignore_case_~b#1.base| |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base|)))) [2022-12-13 22:14:12,308 INFO L899 garLoopResultBuilder]: For program point L7440-3(line 7440) no Hoare annotation was computed. [2022-12-13 22:14:12,308 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 22:14:12,308 INFO L899 garLoopResultBuilder]: For program point L8919(lines 8919 8923) no Hoare annotation was computed. [2022-12-13 22:14:12,308 INFO L899 garLoopResultBuilder]: For program point L7441(lines 7441 7445) no Hoare annotation was computed. [2022-12-13 22:14:12,308 INFO L899 garLoopResultBuilder]: For program point L8911(lines 8911 8924) no Hoare annotation was computed. [2022-12-13 22:14:12,309 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 22:14:12,309 INFO L899 garLoopResultBuilder]: For program point L7446(lines 7446 7454) no Hoare annotation was computed. [2022-12-13 22:14:12,309 INFO L895 garLoopResultBuilder]: At program point L8916(line 8916) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-12-13 22:14:12,309 INFO L899 garLoopResultBuilder]: For program point L8916-1(lines 8916 8918) no Hoare annotation was computed. [2022-12-13 22:14:12,309 INFO L895 garLoopResultBuilder]: At program point L8916-2(line 8916) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2022-12-13 22:14:12,309 INFO L895 garLoopResultBuilder]: At program point L8920(line 8920) the Hoare annotation is: false [2022-12-13 22:14:12,309 INFO L895 garLoopResultBuilder]: At program point L8920-1(line 8920) the Hoare annotation is: false [2022-12-13 22:14:12,309 INFO L899 garLoopResultBuilder]: For program point L8920-2(line 8920) no Hoare annotation was computed. [2022-12-13 22:14:12,309 INFO L899 garLoopResultBuilder]: For program point L8912-3(line 8912) no Hoare annotation was computed. [2022-12-13 22:14:12,309 INFO L899 garLoopResultBuilder]: For program point L8912-5(lines 8912 8913) no Hoare annotation was computed. [2022-12-13 22:14:12,309 INFO L899 garLoopResultBuilder]: For program point L8916-3(line 8916) no Hoare annotation was computed. [2022-12-13 22:14:12,310 INFO L902 garLoopResultBuilder]: At program point L8912(line 8912) the Hoare annotation is: true [2022-12-13 22:14:12,310 INFO L899 garLoopResultBuilder]: For program point L8912-1(lines 8912 8913) no Hoare annotation was computed. [2022-12-13 22:14:12,310 INFO L899 garLoopResultBuilder]: For program point L8916-5(lines 8916 8918) no Hoare annotation was computed. [2022-12-13 22:14:12,310 INFO L902 garLoopResultBuilder]: At program point L8912-2(line 8912) the Hoare annotation is: true [2022-12-13 22:14:12,310 INFO L895 garLoopResultBuilder]: At program point aws_string_eq_ignore_case_returnLabel#1(lines 7437 7456) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0))) (or (and .cse0 (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (not .cse0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (<= 0 |ULTIMATE.start_aws_string_eq_ignore_case_~a#1.offset|) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|) (not (= |ULTIMATE.start_aws_string_eq_ignore_case_~a#1.base| 0)) (= |ULTIMATE.start_aws_string_eq_ignore_case_~b#1.offset| |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|) (<= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset|) (= |ULTIMATE.start_aws_string_eq_ignore_case_~b#1.base| |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base|)))) [2022-12-13 22:14:12,310 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-12-13 22:14:12,310 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-12-13 22:14:12,310 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-12-13 22:14:12,310 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-12-13 22:14:12,310 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 222 224) the Hoare annotation is: true [2022-12-13 22:14:12,311 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-12-13 22:14:12,311 INFO L899 garLoopResultBuilder]: For program point L8005-4(lines 8005 8011) no Hoare annotation was computed. [2022-12-13 22:14:12,311 INFO L899 garLoopResultBuilder]: For program point L7994(lines 7991 8016) no Hoare annotation was computed. [2022-12-13 22:14:12,311 INFO L899 garLoopResultBuilder]: For program point aws_array_eq_ignore_caseFINAL(lines 7986 8016) no Hoare annotation was computed. [2022-12-13 22:14:12,311 INFO L902 garLoopResultBuilder]: At program point L7992-1(line 7992) the Hoare annotation is: true [2022-12-13 22:14:12,311 INFO L902 garLoopResultBuilder]: At program point L7992(line 7992) the Hoare annotation is: true [2022-12-13 22:14:12,311 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7986 8016) the Hoare annotation is: true [2022-12-13 22:14:12,311 INFO L899 garLoopResultBuilder]: For program point L8006(lines 8006 8010) no Hoare annotation was computed. [2022-12-13 22:14:12,311 INFO L902 garLoopResultBuilder]: At program point L8005-3(lines 8005 8011) the Hoare annotation is: true [2022-12-13 22:14:12,311 INFO L899 garLoopResultBuilder]: For program point aws_array_eq_ignore_caseEXIT(lines 7986 8016) no Hoare annotation was computed. [2022-12-13 22:14:12,312 INFO L899 garLoopResultBuilder]: For program point L8005-2(lines 8005 8011) no Hoare annotation was computed. [2022-12-13 22:14:12,314 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:14:12,316 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:14:12,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:14:12 BoogieIcfgContainer [2022-12-13 22:14:12,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:14:12,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:14:12,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:14:12,328 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:14:12,328 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:13:40" (3/4) ... [2022-12-13 22:14:12,331 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 22:14:12,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2022-12-13 22:14:12,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-12-13 22:14:12,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2022-12-13 22:14:12,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2022-12-13 22:14:12,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-13 22:14:12,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-13 22:14:12,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_array_eq_ignore_case [2022-12-13 22:14:12,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2022-12-13 22:14:12,337 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2022-12-13 22:14:12,344 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-13 22:14:12,344 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-12-13 22:14:12,345 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 22:14:12,345 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 22:14:12,366 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\old(max_size) == max_size || 16 == max_size) && !(str == 0)) && str == 0) && !(\result == 0)) && !(\old(max_size) == 16)) && \result == 0 [2022-12-13 22:14:12,431 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:14:12,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:14:12,432 INFO L158 Benchmark]: Toolchain (without parser) took 34495.39ms. Allocated memory was 153.1MB in the beginning and 383.8MB in the end (delta: 230.7MB). Free memory was 110.1MB in the beginning and 244.9MB in the end (delta: -134.9MB). Peak memory consumption was 96.3MB. Max. memory is 16.1GB. [2022-12-13 22:14:12,432 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:14:12,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1800.68ms. Allocated memory was 153.1MB in the beginning and 220.2MB in the end (delta: 67.1MB). Free memory was 109.5MB in the beginning and 115.2MB in the end (delta: -5.6MB). Peak memory consumption was 81.9MB. Max. memory is 16.1GB. [2022-12-13 22:14:12,432 INFO L158 Benchmark]: Boogie Procedure Inliner took 128.27ms. Allocated memory is still 220.2MB. Free memory was 115.2MB in the beginning and 106.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 22:14:12,432 INFO L158 Benchmark]: Boogie Preprocessor took 56.29ms. Allocated memory is still 220.2MB. Free memory was 106.8MB in the beginning and 101.4MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 22:14:12,432 INFO L158 Benchmark]: RCFGBuilder took 597.16ms. Allocated memory is still 220.2MB. Free memory was 101.4MB in the beginning and 131.1MB in the end (delta: -29.7MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-12-13 22:14:12,433 INFO L158 Benchmark]: TraceAbstraction took 31803.34ms. Allocated memory was 220.2MB in the beginning and 383.8MB in the end (delta: 163.6MB). Free memory was 130.1MB in the beginning and 263.3MB in the end (delta: -133.3MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2022-12-13 22:14:12,433 INFO L158 Benchmark]: Witness Printer took 103.67ms. Allocated memory is still 383.8MB. Free memory was 263.3MB in the beginning and 244.9MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 22:14:12,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 153.1MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1800.68ms. Allocated memory was 153.1MB in the beginning and 220.2MB in the end (delta: 67.1MB). Free memory was 109.5MB in the beginning and 115.2MB in the end (delta: -5.6MB). Peak memory consumption was 81.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 128.27ms. Allocated memory is still 220.2MB. Free memory was 115.2MB in the beginning and 106.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.29ms. Allocated memory is still 220.2MB. Free memory was 106.8MB in the beginning and 101.4MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 597.16ms. Allocated memory is still 220.2MB. Free memory was 101.4MB in the beginning and 131.1MB in the end (delta: -29.7MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * TraceAbstraction took 31803.34ms. Allocated memory was 220.2MB in the beginning and 383.8MB in the end (delta: 163.6MB). Free memory was 130.1MB in the beginning and 263.3MB in the end (delta: -133.3MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Witness Printer took 103.67ms. Allocated memory is still 383.8MB. Free memory was 263.3MB in the beginning and 244.9MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 31.7s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 534 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 475 mSDsluCounter, 10733 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9540 mSDsCounter, 194 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3880 IncrementalHoareTripleChecker+Invalid, 4074 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 194 mSolverCounterUnsat, 1193 mSDtfsCounter, 3880 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1587 GetRequests, 1221 SyntacticMatches, 3 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=9, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 53 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 192 PreInvPairs, 214 NumberOfFragments, 352 HoareAnnotationTreeSize, 192 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 36 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 20.6s InterpolantComputationTime, 2030 NumberOfCodeBlocks, 2030 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2121 ConstructedInterpolants, 17 QuantifiedInterpolants, 12801 SizeOfPredicates, 143 NumberOfNonLiveVariables, 8889 ConjunctsInSsa, 381 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 1156/1296 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6807]: Loop Invariant Derived loop invariant: (((((\old(max_size) == max_size || 16 == max_size) && !(str == 0)) && str == 0) && !(\result == 0)) && !(\old(max_size) == 16)) && \result == 0 - InvariantResult [Line: 8925]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7437]: Loop Invariant Derived loop invariant: (str_a == 0 && str_a == 0) || (((((((!(str_a == 0) && str_b == 0) && 0 <= a) && 0 == str_b) && !(a == 0)) && b == str_b) && 0 <= str_a) && b == str_b) - InvariantResult [Line: 8005]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-13 22:14:12,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2cf3c94-adce-4297-9cc0-2922b03accd0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE