./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.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_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a93ae2aefe533ae243266d9eae238f67d1ffa2da86a95c28d6a71c12f2885445 --- 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 [2022-12-14 07:03:14,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:03:14,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:03:14,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:03:14,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:03:14,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:03:14,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:03:14,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:03:14,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:03:14,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:03:14,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:03:14,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:03:14,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:03:14,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:03:14,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:03:14,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:03:14,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:03:14,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:03:14,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:03:14,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:03:14,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:03:14,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:03:14,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:03:14,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:03:14,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:03:14,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:03:14,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:03:14,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:03:14,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:03:14,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:03:14,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:03:14,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:03:14,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:03:14,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:03:14,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:03:14,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:03:14,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:03:14,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:03:14,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:03:14,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:03:14,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:03:14,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 07:03:14,547 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:03:14,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:03:14,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:03:14,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:03:14,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:03:14,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:03:14,553 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:03:14,554 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:03:14,554 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:03:14,554 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:03:14,554 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:03:14,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:03:14,555 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:03:14,555 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:03:14,555 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:03:14,555 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:03:14,555 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:03:14,555 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:03:14,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:03:14,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:03:14,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:03:14,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:03:14,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:03:14,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:03:14,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:03:14,557 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:03:14,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:03:14,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:03:14,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:03:14,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:03:14,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:03:14,558 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:03:14,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:03:14,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:03:14,559 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:03:14,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:03:14,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:03:14,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:03:14,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a93ae2aefe533ae243266d9eae238f67d1ffa2da86a95c28d6a71c12f2885445 [2022-12-14 07:03:14,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:03:14,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:03:14,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:03:14,769 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:03:14,769 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:03:14,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i [2022-12-14 07:03:17,346 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:03:17,631 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:03:17,632 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i [2022-12-14 07:03:17,652 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/data/540a03ec6/eb665ec07f84461bb12939d14f4da3c4/FLAG5582fd29d [2022-12-14 07:03:17,663 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/data/540a03ec6/eb665ec07f84461bb12939d14f4da3c4 [2022-12-14 07:03:17,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:03:17,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:03:17,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:03:17,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:03:17,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:03:17,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:03:17" (1/1) ... [2022-12-14 07:03:17,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3179e238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:17, skipping insertion in model container [2022-12-14 07:03:17,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:03:17" (1/1) ... [2022-12-14 07:03:17,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:03:17,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:03:17,925 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_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4500,4513] [2022-12-14 07:03:17,932 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_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4560,4573] [2022-12-14 07:03:18,563 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:18,564 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:18,564 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:18,564 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:18,565 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:18,576 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:18,577 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:18,578 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:18,578 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:18,636 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 07:03:18,636 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 07:03:18,637 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 07:03:18,640 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 07:03:18,642 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 07:03:18,642 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 07:03:18,884 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 07:03:18,885 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 07:03:18,886 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 07:03:18,887 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 07:03:18,888 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 07:03:18,889 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 07:03:18,889 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 07:03:18,890 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 07:03:18,890 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 07:03:18,891 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 07:03:18,891 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 07:03:19,017 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 07:03:19,045 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 07:03:19,052 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 07:03:19,072 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 07:03:19,078 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,078 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,116 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 07:03:19,120 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 07:03:19,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:03:19,159 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:03:19,167 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_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4500,4513] [2022-12-14 07:03:19,168 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_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4560,4573] [2022-12-14 07:03:19,200 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,201 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,201 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,201 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,202 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,208 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,209 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,210 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,210 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,217 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 07:03:19,217 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 07:03:19,218 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 07:03:19,221 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 07:03:19,222 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 07:03:19,222 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 07:03:19,242 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 07:03:19,242 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 07:03:19,243 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 07:03:19,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 07:03:19,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 07:03:19,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 07:03:19,246 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 07:03:19,246 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 07:03:19,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 07:03:19,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 07:03:19,248 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 07:03:19,267 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 07:03:19,289 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 07:03:19,295 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 07:03:19,313 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 07:03:19,320 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,321 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 07:03:19,347 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 07:03:19,351 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 07:03:19,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:03:19,530 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:03:19,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19 WrapperNode [2022-12-14 07:03:19,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:03:19,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:03:19,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:03:19,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:03:19,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,639 INFO L138 Inliner]: procedures = 690, calls = 2739, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 830 [2022-12-14 07:03:19,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:03:19,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:03:19,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:03:19,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:03:19,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,682 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:03:19,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:03:19,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:03:19,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:03:19,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (1/1) ... [2022-12-14 07:03:19,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:03:19,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:03:19,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:03:19,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:03:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-12-14 07:03:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-12-14 07:03:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 07:03:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 07:03:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 07:03:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-12-14 07:03:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-12-14 07:03:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-12-14 07:03:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 07:03:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 07:03:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-14 07:03:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 07:03:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:03:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 07:03:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 07:03:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 07:03:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 07:03:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-12-14 07:03:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-12-14 07:03:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 07:03:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 07:03:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-12-14 07:03:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-12-14 07:03:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 07:03:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-12-14 07:03:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-12-14 07:03:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 07:03:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 07:03:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2022-12-14 07:03:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2022-12-14 07:03:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 07:03:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 07:03:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-12-14 07:03:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-12-14 07:03:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 07:03:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 07:03:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 07:03:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-12-14 07:03:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2022-12-14 07:03:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2022-12-14 07:03:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 07:03:19,965 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:03:19,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:03:20,112 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-12-14 07:03:20,856 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:03:20,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:03:20,942 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 07:03:20,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:03:20 BoogieIcfgContainer [2022-12-14 07:03:20,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:03:20,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:03:20,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:03:20,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:03:20,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:03:17" (1/3) ... [2022-12-14 07:03:20,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5a7226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:03:20, skipping insertion in model container [2022-12-14 07:03:20,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:03:19" (2/3) ... [2022-12-14 07:03:20,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5a7226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:03:20, skipping insertion in model container [2022-12-14 07:03:20,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:03:20" (3/3) ... [2022-12-14 07:03:20,951 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness_negated.i [2022-12-14 07:03:20,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:03:20,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 07:03:21,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:03:21,006 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74267b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:03:21,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 07:03:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-14 07:03:21,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 07:03:21,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:21,016 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:03:21,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:21,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1637711367, now seen corresponding path program 1 times [2022-12-14 07:03:21,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:21,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100067222] [2022-12-14 07:03:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:21,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:03:21,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100067222] [2022-12-14 07:03:21,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100067222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:21,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:21,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:03:21,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366894308] [2022-12-14 07:03:21,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:21,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:03:21,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:03:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:03:22,022 INFO L87 Difference]: Start difference. First operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 07:03:22,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:22,318 INFO L93 Difference]: Finished difference Result 197 states and 275 transitions. [2022-12-14 07:03:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:03:22,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 60 [2022-12-14 07:03:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:22,331 INFO L225 Difference]: With dead ends: 197 [2022-12-14 07:03:22,331 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 07:03:22,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:03:22,336 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 18 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:22,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 768 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:03:22,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 07:03:22,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2022-12-14 07:03:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 73 states have internal predecessors, (83), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2022-12-14 07:03:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2022-12-14 07:03:22,377 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2022-12-14 07:03:22,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:22,377 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2022-12-14 07:03:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-14 07:03:22,378 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2022-12-14 07:03:22,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 07:03:22,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:22,380 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:03:22,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:03:22,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:22,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:22,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1495619043, now seen corresponding path program 1 times [2022-12-14 07:03:22,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:22,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897681386] [2022-12-14 07:03:22,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:03:22,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:22,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897681386] [2022-12-14 07:03:22,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897681386] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:22,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:22,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 07:03:22,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543343515] [2022-12-14 07:03:22,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:22,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 07:03:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 07:03:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-14 07:03:22,861 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 07:03:23,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:23,252 INFO L93 Difference]: Finished difference Result 186 states and 243 transitions. [2022-12-14 07:03:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 07:03:23,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 64 [2022-12-14 07:03:23,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:23,255 INFO L225 Difference]: With dead ends: 186 [2022-12-14 07:03:23,255 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 07:03:23,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-12-14 07:03:23,256 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 170 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:23,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1020 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:03:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 07:03:23,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 126. [2022-12-14 07:03:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 41 states have call successors, (41), 16 states have call predecessors, (41), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-14 07:03:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2022-12-14 07:03:23,268 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 64 [2022-12-14 07:03:23,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:23,268 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2022-12-14 07:03:23,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 07:03:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2022-12-14 07:03:23,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 07:03:23,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:23,269 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:03:23,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:03:23,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:23,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:23,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1970175776, now seen corresponding path program 1 times [2022-12-14 07:03:23,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:23,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601913298] [2022-12-14 07:03:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:23,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:03:23,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:23,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601913298] [2022-12-14 07:03:23,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601913298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:23,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:23,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 07:03:23,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697332657] [2022-12-14 07:03:23,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:23,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:03:23,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:03:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:03:23,535 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-12-14 07:03:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:23,641 INFO L93 Difference]: Finished difference Result 168 states and 212 transitions. [2022-12-14 07:03:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:03:23,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 64 [2022-12-14 07:03:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:23,644 INFO L225 Difference]: With dead ends: 168 [2022-12-14 07:03:23,644 INFO L226 Difference]: Without dead ends: 130 [2022-12-14 07:03:23,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 07:03:23,645 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:23,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 551 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:03:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-14 07:03:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-12-14 07:03:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2022-12-14 07:03:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2022-12-14 07:03:23,660 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 64 [2022-12-14 07:03:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:23,660 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2022-12-14 07:03:23,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2022-12-14 07:03:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2022-12-14 07:03:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 07:03:23,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:23,663 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:03:23,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:03:23,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash 747453033, now seen corresponding path program 1 times [2022-12-14 07:03:23,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:23,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310332660] [2022-12-14 07:03:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:23,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 07:03:24,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310332660] [2022-12-14 07:03:24,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310332660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:03:24,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:03:24,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 07:03:24,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131688358] [2022-12-14 07:03:24,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:03:24,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:03:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:03:24,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:03:24,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:03:24,191 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-14 07:03:24,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:24,320 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2022-12-14 07:03:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:03:24,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2022-12-14 07:03:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:24,322 INFO L225 Difference]: With dead ends: 170 [2022-12-14 07:03:24,322 INFO L226 Difference]: Without dead ends: 138 [2022-12-14 07:03:24,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 07:03:24,324 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:24,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 829 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:03:24,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-14 07:03:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-12-14 07:03:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 77 states have internal predecessors, (88), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2022-12-14 07:03:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2022-12-14 07:03:24,337 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2022-12-14 07:03:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:24,338 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2022-12-14 07:03:24,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-14 07:03:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2022-12-14 07:03:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 07:03:24,340 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:24,340 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-12-14 07:03:24,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:03:24,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 07:03:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash 754398359, now seen corresponding path program 1 times [2022-12-14 07:03:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:24,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787203120] [2022-12-14 07:03:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:24,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 07:03:25,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:25,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787203120] [2022-12-14 07:03:25,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787203120] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:03:25,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411292934] [2022-12-14 07:03:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:03:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:03:25,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:03:25,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36161983-f1d0-4a6a-8b8a-e46fd9dd194f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:03:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:26,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 91 conjunts are in the unsatisfiable core [2022-12-14 07:03:26,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:03:26,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-12-14 07:03:26,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 58 [2022-12-14 07:03:26,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:03:26,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:03:26,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 130 [2022-12-14 07:03:26,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:03:26,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:03:26,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 126 [2022-12-14 07:03:26,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:03:26,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 07:03:26,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-12-14 07:03:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 07:03:26,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:03:27,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2022-12-14 07:03:27,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2022-12-14 07:03:27,299 INFO L321 Elim1Store]: treesize reduction 26, result has 71.4 percent of original size [2022-12-14 07:03:27,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 149 [2022-12-14 07:03:27,383 INFO L321 Elim1Store]: treesize reduction 26, result has 71.4 percent of original size [2022-12-14 07:03:27,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 149 [2022-12-14 07:03:27,493 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-12-14 07:03:27,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 65 [2022-12-14 07:03:27,534 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-12-14 07:03:27,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 31 [2022-12-14 07:03:27,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2022-12-14 07:03:27,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-14 07:03:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-14 07:03:27,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411292934] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:03:27,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1108111238] [2022-12-14 07:03:27,748 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-12-14 07:03:27,748 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:03:27,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:03:27,755 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:03:27,755 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:04:29,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 07:04:29,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-14 07:05:00,648 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 3235 for LOIs [2022-12-14 07:05:04,542 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 3260 for LOIs [2022-12-14 07:05:45,073 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3306 for LOIs [2022-12-14 07:06:14,454 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:06:55,435 WARN L233 SmtUtils]: Spent 39.81s on a formula simplification that was a NOOP. DAG size: 3240 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:07:37,353 WARN L233 SmtUtils]: Spent 40.82s on a formula simplification that was a NOOP. DAG size: 3235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 07:14:13,061 WARN L233 SmtUtils]: Spent 6.53m on a formula simplification. DAG size of input: 3306 DAG size of output: 3259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)