./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/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_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/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_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/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 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- 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 06:53:47,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:53:47,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:53:47,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:53:47,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:53:47,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:53:47,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:53:47,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:53:47,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:53:47,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:53:47,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:53:47,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:53:47,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:53:47,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:53:47,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:53:47,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:53:47,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:53:47,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:53:47,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:53:47,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:53:47,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:53:47,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:53:47,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:53:47,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:53:47,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:53:47,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:53:47,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:53:47,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:53:47,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:53:47,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:53:47,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:53:47,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:53:47,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:53:47,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:53:47,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:53:47,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:53:47,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:53:47,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:53:47,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:53:47,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:53:47,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:53:47,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 06:53:47,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:53:47,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:53:47,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:53:47,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:53:47,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:53:47,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:53:47,441 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:53:47,441 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:53:47,441 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:53:47,441 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:53:47,441 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:53:47,442 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:53:47,442 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:53:47,442 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:53:47,442 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:53:47,442 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:53:47,442 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:53:47,442 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:53:47,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:53:47,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:53:47,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:53:47,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:53:47,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:53:47,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:53:47,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:53:47,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:53:47,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:53:47,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:53:47,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:53:47,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:53:47,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:53:47,444 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:53:47,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:53:47,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:53:47,445 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:53:47,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:53:47,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:53:47,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:53:47,445 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_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2022-12-14 06:53:47,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:53:47,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:53:47,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:53:47,635 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:53:47,635 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:53:47,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-12-14 06:53:50,281 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:53:50,631 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:53:50,632 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-12-14 06:53:50,655 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/data/413fe5552/0aeff413c13d4f289251d14ac58e972d/FLAG62929a904 [2022-12-14 06:53:50,667 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/data/413fe5552/0aeff413c13d4f289251d14ac58e972d [2022-12-14 06:53:50,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:53:50,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:53:50,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:53:50,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:53:50,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:53:50,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:53:50" (1/1) ... [2022-12-14 06:53:50,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317b0a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:50, skipping insertion in model container [2022-12-14 06:53:50,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:53:50" (1/1) ... [2022-12-14 06:53:50,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:53:50,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:53:50,929 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_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-12-14 06:53:50,935 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_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-12-14 06:53:51,540 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:51,551 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:51,556 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:51,557 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:51,557 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:51,558 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:51,559 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:51,562 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:51,569 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:51,569 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:51,571 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:51,571 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:51,627 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:53:51,628 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:53:51,628 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:53:51,632 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 06:53:51,633 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 06:53:51,634 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 06:53:51,738 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:51,844 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 06:53:51,845 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 06:53:51,846 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 06:53:51,847 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 06:53:51,848 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 06:53:51,849 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 06:53:51,849 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 06:53:51,850 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 06:53:51,850 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 06:53:51,851 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 06:53:51,851 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 06:53:51,969 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 06:53:51,988 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:51,989 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:51,994 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:51,996 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:51,997 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:51,998 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 06:53:52,004 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:53:52,022 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:53:52,027 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,028 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,035 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,051 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,066 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 06:53:52,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:53:52,098 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:53:52,107 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_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-12-14 06:53:52,107 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_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-12-14 06:53:52,124 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,127 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,129 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,130 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,130 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,130 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,131 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,132 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,135 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,135 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,136 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,136 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,152 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:53:52,152 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:53:52,153 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-14 06:53:52,155 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-14 06:53:52,157 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-14 06:53:52,157 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-14 06:53:52,159 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,175 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-14 06:53:52,176 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-14 06:53:52,176 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-14 06:53:52,176 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-14 06:53:52,177 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-14 06:53:52,177 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-14 06:53:52,178 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-14 06:53:52,178 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-14 06:53:52,178 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-14 06:53:52,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-14 06:53:52,179 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-14 06:53:52,197 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-14 06:53:52,208 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,209 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,212 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,214 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,214 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,215 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-14 06:53:52,218 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:53:52,229 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:53:52,233 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,233 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-14 06:53:52,239 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,242 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-14 06:53:52,250 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 06:53:52,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:53:52,379 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:53:52,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52 WrapperNode [2022-12-14 06:53:52,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:53:52,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:53:52,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:53:52,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:53:52,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,485 INFO L138 Inliner]: procedures = 691, calls = 2676, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 967 [2022-12-14 06:53:52,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:53:52,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:53:52,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:53:52,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:53:52,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:53:52,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:53:52,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:53:52,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:53:52,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (1/1) ... [2022-12-14 06:53:52,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:53:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:53:52,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:53:52,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:53:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-12-14 06:53:52,597 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-12-14 06:53:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:53:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-14 06:53:52,598 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-14 06:53:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 06:53:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 06:53:52,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 06:53:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:53:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:53:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:53:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-12-14 06:53:52,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-12-14 06:53:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:53:52,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:53:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-14 06:53:52,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-14 06:53:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-12-14 06:53:52,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-12-14 06:53:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 06:53:52,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 06:53:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:53:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:53:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 06:53:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-14 06:53:52,600 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-14 06:53:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-12-14 06:53:52,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-12-14 06:53:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 06:53:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-12-14 06:53:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-12-14 06:53:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-12-14 06:53:52,601 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-12-14 06:53:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:53:52,819 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:53:52,821 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:53:53,736 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:53:53,869 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:53:53,869 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 06:53:53,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:53:53 BoogieIcfgContainer [2022-12-14 06:53:53,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:53:53,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:53:53,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:53:53,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:53:53,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:53:50" (1/3) ... [2022-12-14 06:53:53,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd34a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:53:53, skipping insertion in model container [2022-12-14 06:53:53,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:53:52" (2/3) ... [2022-12-14 06:53:53,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd34a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:53:53, skipping insertion in model container [2022-12-14 06:53:53,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:53:53" (3/3) ... [2022-12-14 06:53:53,879 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2022-12-14 06:53:53,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:53:53,893 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:53:53,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:53:53,933 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;@61802e08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:53:53,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:53:53,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 06:53:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 06:53:53,944 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:53:53,944 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:53:53,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:53:53,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:53:53,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1040876700, now seen corresponding path program 1 times [2022-12-14 06:53:53,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:53:53,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666745675] [2022-12-14 06:53:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:53:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:53:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:53:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 06:53:54,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:53:54,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666745675] [2022-12-14 06:53:54,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666745675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:53:54,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:53:54,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:53:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297847235] [2022-12-14 06:53:54,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:53:54,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 06:53:54,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:53:54,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 06:53:54,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:53:54,390 INFO L87 Difference]: Start difference. First operand has 140 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:53:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:53:54,656 INFO L93 Difference]: Finished difference Result 228 states and 344 transitions. [2022-12-14 06:53:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 06:53:54,658 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 61 [2022-12-14 06:53:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:53:54,664 INFO L225 Difference]: With dead ends: 228 [2022-12-14 06:53:54,664 INFO L226 Difference]: Without dead ends: 138 [2022-12-14 06:53:54,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 06:53:54,668 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:53:54,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:53:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-14 06:53:54,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-12-14 06:53:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-14 06:53:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 192 transitions. [2022-12-14 06:53:54,704 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 192 transitions. Word has length 61 [2022-12-14 06:53:54,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:53:54,706 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 192 transitions. [2022-12-14 06:53:54,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 06:53:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 192 transitions. [2022-12-14 06:53:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:53:54,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:53:54,708 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:53:54,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:53:54,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:53:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:53:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1981706641, now seen corresponding path program 1 times [2022-12-14 06:53:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:53:54,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966386353] [2022-12-14 06:53:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:53:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:53:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-14 06:54:03,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:54:03,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966386353] [2022-12-14 06:54:03,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966386353] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:03,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:54:03,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-14 06:54:03,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164692302] [2022-12-14 06:54:03,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 06:54:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:54:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 06:54:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-14 06:54:03,788 INFO L87 Difference]: Start difference. First operand 138 states and 192 transitions. Second operand has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-14 06:54:07,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:07,028 INFO L93 Difference]: Finished difference Result 210 states and 300 transitions. [2022-12-14 06:54:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 06:54:07,029 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 64 [2022-12-14 06:54:07,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:07,033 INFO L225 Difference]: With dead ends: 210 [2022-12-14 06:54:07,033 INFO L226 Difference]: Without dead ends: 208 [2022-12-14 06:54:07,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2022-12-14 06:54:07,035 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 119 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:07,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 2146 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 06:54:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-12-14 06:54:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 156. [2022-12-14 06:54:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 83 states have internal predecessors, (95), 62 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-12-14 06:54:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 218 transitions. [2022-12-14 06:54:07,053 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 218 transitions. Word has length 64 [2022-12-14 06:54:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:07,053 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 218 transitions. [2022-12-14 06:54:07,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 11 states have (on average 2.272727272727273) internal successors, (25), 13 states have internal predecessors, (25), 8 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2022-12-14 06:54:07,053 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 218 transitions. [2022-12-14 06:54:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 06:54:07,055 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:07,055 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:07,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:54:07,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:07,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:07,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1198158635, now seen corresponding path program 1 times [2022-12-14 06:54:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:54:07,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372085700] [2022-12-14 06:54:07,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:07,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:54:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 06:54:16,731 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:54:16,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372085700] [2022-12-14 06:54:16,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372085700] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:16,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:54:16,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-12-14 06:54:16,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094784095] [2022-12-14 06:54:16,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:16,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 06:54:16,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:54:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 06:54:16,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-12-14 06:54:16,734 INFO L87 Difference]: Start difference. First operand 156 states and 218 transitions. Second operand has 24 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2022-12-14 06:54:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:24,355 INFO L93 Difference]: Finished difference Result 315 states and 463 transitions. [2022-12-14 06:54:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 06:54:24,355 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) Word has length 68 [2022-12-14 06:54:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:24,358 INFO L225 Difference]: With dead ends: 315 [2022-12-14 06:54:24,358 INFO L226 Difference]: Without dead ends: 313 [2022-12-14 06:54:24,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=1024, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 06:54:24,359 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 221 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 4235 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 4597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 4235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:24,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1792 Invalid, 4597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 4235 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-12-14 06:54:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-12-14 06:54:24,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 169. [2022-12-14 06:54:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 88 states have (on average 1.1818181818181819) internal successors, (104), 90 states have internal predecessors, (104), 67 states have call successors, (67), 12 states have call predecessors, (67), 13 states have return successors, (68), 66 states have call predecessors, (68), 66 states have call successors, (68) [2022-12-14 06:54:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 239 transitions. [2022-12-14 06:54:24,386 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 239 transitions. Word has length 68 [2022-12-14 06:54:24,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:24,386 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 239 transitions. [2022-12-14 06:54:24,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2022-12-14 06:54:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 239 transitions. [2022-12-14 06:54:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 06:54:24,388 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:24,388 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:24,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:54:24,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash 105099282, now seen corresponding path program 1 times [2022-12-14 06:54:24,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:54:24,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736148532] [2022-12-14 06:54:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:54:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 06:54:34,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:54:34,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736148532] [2022-12-14 06:54:34,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736148532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:54:34,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:54:34,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 06:54:34,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456877753] [2022-12-14 06:54:34,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:54:34,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:54:34,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:54:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:54:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:54:34,214 INFO L87 Difference]: Start difference. First operand 169 states and 239 transitions. Second operand has 9 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 06:54:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:54:35,851 INFO L93 Difference]: Finished difference Result 219 states and 311 transitions. [2022-12-14 06:54:35,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:54:35,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 72 [2022-12-14 06:54:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:54:35,853 INFO L225 Difference]: With dead ends: 219 [2022-12-14 06:54:35,853 INFO L226 Difference]: Without dead ends: 217 [2022-12-14 06:54:35,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:54:35,854 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 37 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:54:35,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1537 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 06:54:35,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-12-14 06:54:35,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 142. [2022-12-14 06:54:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 74 states have (on average 1.162162162162162) internal successors, (86), 75 states have internal predecessors, (86), 55 states have call successors, (55), 12 states have call predecessors, (55), 12 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-14 06:54:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2022-12-14 06:54:35,875 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 72 [2022-12-14 06:54:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:54:35,875 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2022-12-14 06:54:35,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 06:54:35,875 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2022-12-14 06:54:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 06:54:35,876 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:54:35,876 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:54:35,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:54:35,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:54:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:54:35,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1207054696, now seen corresponding path program 1 times [2022-12-14 06:54:35,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:54:35,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717675496] [2022-12-14 06:54:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:35,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:54:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-14 06:54:51,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:54:51,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717675496] [2022-12-14 06:54:51,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717675496] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:54:51,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571730865] [2022-12-14 06:54:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:54:51,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:54:51,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:54:51,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:54:51,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5b163c1-cfd8-4abe-90c0-b552cbb9c535/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:54:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:54:59,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 2864 conjuncts, 196 conjunts are in the unsatisfiable core [2022-12-14 06:54:59,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:55:00,013 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 06:55:00,013 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 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 06:55:00,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 06:55:01,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 24 [2022-12-14 06:55:01,217 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 13 treesize of output 9 [2022-12-14 06:55:01,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:01,365 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 06:55:01,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 38 [2022-12-14 06:55:03,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:03,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:03,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:03,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:03,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2022-12-14 06:55:03,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2022-12-14 06:55:03,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 06:55:03,576 INFO L321 Elim1Store]: treesize reduction 90, result has 30.8 percent of original size [2022-12-14 06:55:03,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 71 [2022-12-14 06:55:10,143 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 06:55:10,148 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 06:55:10,160 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 06:55:10,171 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 06:55:16,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:16,479 INFO L321 Elim1Store]: treesize reduction 150, result has 27.9 percent of original size [2022-12-14 06:55:16,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 264 treesize of output 294 [2022-12-14 06:55:16,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:16,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:16,623 INFO L321 Elim1Store]: treesize reduction 148, result has 28.5 percent of original size [2022-12-14 06:55:16,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 259 treesize of output 278 [2022-12-14 06:55:17,173 INFO L321 Elim1Store]: treesize reduction 8, result has 97.2 percent of original size [2022-12-14 06:55:17,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 186 treesize of output 440 [2022-12-14 06:55:24,159 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 06:55:24,186 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 06:55:24,262 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 06:55:26,707 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 06:55:27,700 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 5 treesize of output 3 [2022-12-14 06:55:27,712 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 327 treesize of output 323 [2022-12-14 06:55:34,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:34,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 73 [2022-12-14 06:55:34,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:34,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:55:34,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2022-12-14 06:55:34,743 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 90 treesize of output 74 [2022-12-14 06:55:34,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:55:34,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2022-12-14 06:55:34,774 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 29 treesize of output 29 [2022-12-14 06:55:34,778 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 23 treesize of output 17 [2022-12-14 06:56:08,979 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 06:56:08,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 157 treesize of output 117 [2022-12-14 06:56:09,239 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 06:56:09,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2022-12-14 06:56:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 06:56:09,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:56:12,212 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-12-14 07:02:48,649 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.