./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_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_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/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_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/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_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/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 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- 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 11:08:48,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:08:48,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:08:48,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:08:48,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:08:48,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:08:48,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:08:48,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:08:48,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:08:48,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:08:48,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:08:48,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:08:48,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:08:48,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:08:48,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:08:48,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:08:48,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:08:48,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:08:48,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:08:48,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:08:48,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:08:48,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:08:48,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:08:48,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:08:48,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:08:48,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:08:48,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:08:48,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:08:48,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:08:48,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:08:48,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:08:48,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:08:48,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:08:48,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:08:48,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:08:48,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:08:48,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:08:48,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:08:48,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:08:48,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:08:48,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:08:48,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 11:08:48,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:08:48,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:08:48,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:08:48,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:08:48,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:08:48,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:08:48,440 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:08:48,441 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:08:48,441 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:08:48,441 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:08:48,441 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:08:48,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:08:48,441 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:08:48,441 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:08:48,441 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:08:48,441 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:08:48,441 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:08:48,441 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:08:48,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:08:48,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:08:48,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:08:48,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:08:48,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:08:48,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:08:48,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:08:48,443 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:08:48,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:08:48,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:08:48,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:08:48,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:08:48,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:08:48,443 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:08:48,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:08:48,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:08:48,443 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:08:48,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:08:48,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:08:48,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:08:48,444 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_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2022-12-14 11:08:48,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:08:48,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:08:48,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:08:48,653 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:08:48,654 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:08:48,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-12-14 11:08:51,172 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:08:51,540 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:08:51,540 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-12-14 11:08:51,566 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/data/5d94610c6/67844d2c66fd4fb6b9c95da52cf38dcc/FLAGd9320b435 [2022-12-14 11:08:51,725 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/data/5d94610c6/67844d2c66fd4fb6b9c95da52cf38dcc [2022-12-14 11:08:51,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:08:51,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:08:51,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:08:51,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:08:51,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:08:51,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:08:51" (1/1) ... [2022-12-14 11:08:51,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79dc11dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:51, skipping insertion in model container [2022-12-14 11:08:51,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:08:51" (1/1) ... [2022-12-14 11:08:51,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:08:51,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:08:52,027 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_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-12-14 11:08:52,033 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_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-12-14 11:08:52,715 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:52,716 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:52,717 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:52,717 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:52,718 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:52,731 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:52,732 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:52,734 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:52,734 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:52,802 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:08:52,802 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:08:52,802 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:08:52,806 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 11:08:52,807 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 11:08:52,808 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 11:08:53,035 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 11:08:53,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 11:08:53,037 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 11:08:53,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 11:08:53,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 11:08:53,039 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 11:08:53,040 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 11:08:53,040 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 11:08:53,041 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 11:08:53,041 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 11:08:53,042 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 11:08:53,165 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 11:08:53,190 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 11:08:53,198 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:08:53,226 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:08:53,232 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,232 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,298 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 11:08:53,304 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:08:53,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:08:53,365 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:08:53,379 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_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-12-14 11:08:53,379 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_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-12-14 11:08:53,416 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,416 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,416 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,417 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,417 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,423 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,424 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,425 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,425 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,432 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:08:53,433 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:08:53,433 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 11:08:53,436 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 11:08:53,437 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 11:08:53,438 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 11:08:53,457 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 11:08:53,458 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 11:08:53,459 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 11:08:53,459 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 11:08:53,460 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 11:08:53,461 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 11:08:53,461 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 11:08:53,462 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 11:08:53,462 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 11:08:53,462 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 11:08:53,463 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 11:08:53,481 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 11:08:53,501 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 11:08:53,506 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:08:53,521 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:08:53,527 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,527 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 11:08:53,548 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 11:08:53,552 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 11:08:53,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:08:53,752 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:08:53,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53 WrapperNode [2022-12-14 11:08:53,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:08:53,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:08:53,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:08:53,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:08:53,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,883 INFO L138 Inliner]: procedures = 690, calls = 2739, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 830 [2022-12-14 11:08:53,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:08:53,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:08:53,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:08:53,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:08:53,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,950 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:08:53,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:08:53,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:08:53,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:08:53,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (1/1) ... [2022-12-14 11:08:53,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:08:53,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:53,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:08:53,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-12-14 11:08:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-12-14 11:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 11:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 11:08:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 11:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-12-14 11:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-12-14 11:08:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-12-14 11:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-14 11:08:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-14 11:08:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-14 11:08:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 11:08:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:08:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 11:08:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-14 11:08:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-12-14 11:08:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 11:08:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-12-14 11:08:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-12-14 11:08:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2022-12-14 11:08:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 11:08:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 11:08:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-12-14 11:08:54,027 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-12-14 11:08:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-14 11:08:54,027 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-14 11:08:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 11:08:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-12-14 11:08:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2022-12-14 11:08:54,027 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2022-12-14 11:08:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:08:54,237 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:08:54,239 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:08:54,381 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-12-14 11:08:55,222 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:08:55,318 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:08:55,318 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 11:08:55,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:55 BoogieIcfgContainer [2022-12-14 11:08:55,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:08:55,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:08:55,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:08:55,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:08:55,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:08:51" (1/3) ... [2022-12-14 11:08:55,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6e8eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:08:55, skipping insertion in model container [2022-12-14 11:08:55,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:53" (2/3) ... [2022-12-14 11:08:55,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b6e8eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:08:55, skipping insertion in model container [2022-12-14 11:08:55,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:55" (3/3) ... [2022-12-14 11:08:55,326 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2022-12-14 11:08:55,339 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:08:55,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:08:55,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:08:55,379 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;@409a715e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:08:55,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:08:55,383 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 11:08:55,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 11:08:55,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:55,390 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 11:08:55,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:08:55,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1637711367, now seen corresponding path program 1 times [2022-12-14 11:08:55,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:55,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945874974] [2022-12-14 11:08:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:55,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:56,506 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 11:08:56,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:56,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945874974] [2022-12-14 11:08:56,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945874974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:56,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:56,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:08:56,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643111400] [2022-12-14 11:08:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:56,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:08:56,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:08:56,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:08:56,544 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 11:08:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:56,836 INFO L93 Difference]: Finished difference Result 197 states and 275 transitions. [2022-12-14 11:08:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:08:56,839 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 11:08:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:56,849 INFO L225 Difference]: With dead ends: 197 [2022-12-14 11:08:56,849 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 11:08:56,853 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 11:08:56,856 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 11:08:56,857 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 11:08:56,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 11:08:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2022-12-14 11:08:56,906 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 11:08:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2022-12-14 11:08:56,910 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2022-12-14 11:08:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:56,911 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2022-12-14 11:08:56,915 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 11:08:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2022-12-14 11:08:56,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 11:08:56,917 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:56,917 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 11:08:56,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:08:56,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:08:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:56,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1495619043, now seen corresponding path program 1 times [2022-12-14 11:08:56,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:56,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933439894] [2022-12-14 11:08:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:56,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:57,334 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 11:08:57,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:57,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933439894] [2022-12-14 11:08:57,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933439894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:57,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:57,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 11:08:57,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718097239] [2022-12-14 11:08:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:57,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:08:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:08:57,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:08:57,338 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 11:08:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:57,725 INFO L93 Difference]: Finished difference Result 186 states and 243 transitions. [2022-12-14 11:08:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:08:57,725 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 11:08:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:57,728 INFO L225 Difference]: With dead ends: 186 [2022-12-14 11:08:57,728 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 11:08:57,729 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 11:08:57,730 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 11:08:57,731 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 11:08:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 11:08:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 126. [2022-12-14 11:08:57,741 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 11:08:57,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2022-12-14 11:08:57,742 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 64 [2022-12-14 11:08:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:57,742 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2022-12-14 11:08:57,742 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 11:08:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2022-12-14 11:08:57,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 11:08:57,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:57,743 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 11:08:57,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:08:57,744 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:08:57,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:57,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1970175776, now seen corresponding path program 1 times [2022-12-14 11:08:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:57,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248804218] [2022-12-14 11:08:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:57,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:58,004 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 11:08:58,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:58,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248804218] [2022-12-14 11:08:58,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248804218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:58,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:58,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:08:58,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080505841] [2022-12-14 11:08:58,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:58,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:08:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:58,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:08:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:08:58,006 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 11:08:58,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:58,122 INFO L93 Difference]: Finished difference Result 168 states and 212 transitions. [2022-12-14 11:08:58,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:08:58,122 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 11:08:58,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:58,124 INFO L225 Difference]: With dead ends: 168 [2022-12-14 11:08:58,124 INFO L226 Difference]: Without dead ends: 130 [2022-12-14 11:08:58,124 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 11:08:58,125 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 11:08:58,126 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 11:08:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-14 11:08:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-12-14 11:08:58,141 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 11:08:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2022-12-14 11:08:58,143 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 64 [2022-12-14 11:08:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:58,144 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2022-12-14 11:08:58,144 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 11:08:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2022-12-14 11:08:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 11:08:58,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:58,148 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 11:08:58,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:08:58,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:08:58,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:58,149 INFO L85 PathProgramCache]: Analyzing trace with hash 747453033, now seen corresponding path program 1 times [2022-12-14 11:08:58,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:58,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934725669] [2022-12-14 11:08:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:58,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:58,602 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 11:08:58,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:08:58,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934725669] [2022-12-14 11:08:58,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934725669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:58,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:58,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:08:58,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734792779] [2022-12-14 11:08:58,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:58,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:08:58,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:08:58,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:08:58,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 11:08:58,605 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 11:08:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:58,726 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2022-12-14 11:08:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 11:08:58,726 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 11:08:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:58,727 INFO L225 Difference]: With dead ends: 170 [2022-12-14 11:08:58,727 INFO L226 Difference]: Without dead ends: 138 [2022-12-14 11:08:58,728 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 11:08:58,728 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 11:08:58,729 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 11:08:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-14 11:08:58,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-12-14 11:08:58,736 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 11:08:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2022-12-14 11:08:58,737 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2022-12-14 11:08:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:58,738 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2022-12-14 11:08:58,738 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 11:08:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2022-12-14 11:08:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 11:08:58,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:58,739 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 11:08:58,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 11:08:58,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:08:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:58,739 INFO L85 PathProgramCache]: Analyzing trace with hash 754398359, now seen corresponding path program 1 times [2022-12-14 11:08:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:58,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128939310] [2022-12-14 11:08:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:00,007 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 11:09:00,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:09:00,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128939310] [2022-12-14 11:09:00,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128939310] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:09:00,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014650812] [2022-12-14 11:09:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:09:00,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:09:00,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:09:00,009 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:09:00,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e98876a8-8ac6-42c5-bb44-8d25d63e25f4/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:09:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:09:00,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 100 conjunts are in the unsatisfiable core [2022-12-14 11:09:00,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:09:00,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 6 treesize of output 5 [2022-12-14 11:09:03,360 INFO L321 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2022-12-14 11:09:03,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 231 treesize of output 191 [2022-12-14 11:09:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 11:09:03,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:10:00,056 WARN L233 SmtUtils]: Spent 50.96s on a formula simplification. DAG size of input: 152 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:10:01,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014650812] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:10:01,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1180657740] [2022-12-14 11:10:01,091 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-12-14 11:10:01,092 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:10:01,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:10:01,100 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:10:01,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:11:02,751 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 11:11:02,756 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 11:11:32,298 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 3235 for LOIs [2022-12-14 11:11:35,801 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 3260 for LOIs [2022-12-14 11:12:15,421 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3306 for LOIs [2022-12-14 11:12:44,808 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:13:29,359 WARN L233 SmtUtils]: Spent 42.41s 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 11:14:10,548 WARN L233 SmtUtils]: Spent 39.04s 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 11:20:42,872 WARN L233 SmtUtils]: Spent 6.41m on a formula simplification. DAG size of input: 3306 DAG size of output: 3252 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:22:47,024 WARN L233 SmtUtils]: Spent 2.02m on a formula simplification. DAG size of input: 3311 DAG size of output: 3256 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)