./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur --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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- 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-38b53e6 [2022-11-26 00:36:47,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:36:47,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:36:47,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:36:47,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:36:47,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:36:47,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:36:47,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:36:47,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:36:47,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:36:47,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:36:47,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:36:47,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:36:47,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:36:47,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:36:47,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:36:47,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:36:47,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:36:47,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:36:47,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:36:47,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:36:47,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:36:47,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:36:47,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:36:47,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:36:47,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:36:47,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:36:47,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:36:47,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:36:47,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:36:47,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:36:47,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:36:47,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:36:47,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:36:47,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:36:47,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:36:47,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:36:47,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:36:47,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:36:47,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:36:47,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:36:47,407 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:36:47,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:36:47,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:36:47,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:36:47,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:36:47,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:36:47,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:36:47,439 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:36:47,439 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:36:47,439 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:36:47,439 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:36:47,440 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:36:47,440 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:36:47,440 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:36:47,440 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:36:47,441 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:36:47,441 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:36:47,441 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:36:47,441 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:36:47,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:36:47,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:36:47,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:36:47,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:36:47,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:36:47,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:36:47,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:36:47,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:36:47,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:36:47,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:36:47,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:36:47,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:36:47,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:36:47,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:36:47,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:36:47,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:36:47,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:36:47,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:36:47,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:36:47,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:36:47,448 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_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2022-11-26 00:36:47,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:36:47,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:36:47,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:36:47,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:36:47,751 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:36:47,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-11-26 00:36:51,098 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:36:51,622 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:36:51,626 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-11-26 00:36:51,678 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/data/20ee15fc2/fda5fe8decb8451b9c65b47fece5ba2a/FLAGca02f12c0 [2022-11-26 00:36:51,695 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/data/20ee15fc2/fda5fe8decb8451b9c65b47fece5ba2a [2022-11-26 00:36:51,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:36:51,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:36:51,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:36:51,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:36:51,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:36:51,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:36:51" (1/1) ... [2022-11-26 00:36:51,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b1f0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:51, skipping insertion in model container [2022-11-26 00:36:51,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:36:51" (1/1) ... [2022-11-26 00:36:51,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:36:51,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:36:52,164 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_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-11-26 00:36:52,181 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_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-11-26 00:36:53,492 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:53,502 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:53,503 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:53,504 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:53,505 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:53,506 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:53,512 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:53,524 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:53,525 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:53,529 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:53,532 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:53,534 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:53,654 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:36:53,654 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:36:53,655 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:36:53,661 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:36:53,664 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:36:53,664 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:36:54,179 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:36:54,180 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:36:54,182 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:36:54,184 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:36:54,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:36:54,188 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:36:54,189 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:36:54,190 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:36:54,191 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:36:54,196 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:36:54,197 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:36:54,504 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:36:54,543 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,543 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,570 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,587 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,592 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-26 00:36:54,605 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:36:54,620 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,628 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,629 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,630 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,643 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:36:54,652 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,653 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,658 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,667 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,759 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-26 00:36:54,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:36:54,825 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:36:54,855 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_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-11-26 00:36:54,864 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_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-11-26 00:36:54,913 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,916 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,916 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,916 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,917 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,917 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,919 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,924 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,924 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:54,924 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,925 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,926 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:54,946 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:36:54,947 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:36:54,948 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-26 00:36:54,954 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-26 00:36:54,955 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-26 00:36:54,957 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-26 00:36:54,993 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-26 00:36:54,994 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-26 00:36:54,995 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-26 00:36:54,998 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-26 00:36:54,999 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-26 00:36:55,000 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-26 00:36:55,001 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-26 00:36:55,001 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-26 00:36:55,002 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-26 00:36:55,002 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-26 00:36:55,003 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-26 00:36:55,036 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-26 00:36:55,060 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:55,060 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:55,073 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:55,079 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:55,081 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-11-26 00:36:55,090 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:36:55,098 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:55,102 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:55,102 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:55,104 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:55,111 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:36:55,124 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:55,124 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-26 00:36:55,130 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:55,136 WARN L623 FunctionHandler]: Unknown extern function my_memcpy [2022-11-26 00:36:55,165 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-26 00:36:55,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:36:55,468 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:36:55,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55 WrapperNode [2022-11-26 00:36:55,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:36:55,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:36:55,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:36:55,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:36:55,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,713 INFO L138 Inliner]: procedures = 691, calls = 2636, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1064 [2022-11-26 00:36:55,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:36:55,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:36:55,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:36:55,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:36:55,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,783 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:36:55,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:36:55,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:36:55,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:36:55,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (1/1) ... [2022-11-26 00:36:55,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:36:55,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:36:55,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:36:55,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:36:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-26 00:36:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-26 00:36:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-26 00:36:55,901 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-26 00:36:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:36:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-26 00:36:55,902 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-26 00:36:55,902 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-26 00:36:55,902 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-26 00:36:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:36:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-26 00:36:55,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-26 00:36:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:36:55,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:36:55,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:36:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:36:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:36:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-26 00:36:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-26 00:36:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:36:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:36:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-26 00:36:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-26 00:36:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-26 00:36:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-26 00:36:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-26 00:36:55,916 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-26 00:36:55,917 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-26 00:36:55,917 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-26 00:36:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-26 00:36:55,918 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-26 00:36:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-26 00:36:55,918 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-26 00:36:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:36:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-26 00:36:55,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-26 00:36:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:36:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:36:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-26 00:36:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-26 00:36:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-26 00:36:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-26 00:36:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-11-26 00:36:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-11-26 00:36:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-26 00:36:55,921 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-26 00:36:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:36:55,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:36:56,367 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:36:56,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:36:58,287 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:36:58,766 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:36:58,767 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 00:36:58,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:58 BoogieIcfgContainer [2022-11-26 00:36:58,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:36:58,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:36:58,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:36:58,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:36:58,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:36:51" (1/3) ... [2022-11-26 00:36:58,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676c12b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:36:58, skipping insertion in model container [2022-11-26 00:36:58,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:36:55" (2/3) ... [2022-11-26 00:36:58,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676c12b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:36:58, skipping insertion in model container [2022-11-26 00:36:58,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:36:58" (3/3) ... [2022-11-26 00:36:58,788 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2022-11-26 00:36:58,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:36:58,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:36:58,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:36:58,931 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;@4488c322, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:36:58,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:36:58,937 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-26 00:36:58,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-26 00:36:58,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:58,954 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:58,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:36:58,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1899896275, now seen corresponding path program 1 times [2022-11-26 00:36:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:58,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319209672] [2022-11-26 00:36:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-26 00:37:00,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:00,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319209672] [2022-11-26 00:37:00,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319209672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:00,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:00,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:37:00,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141735568] [2022-11-26 00:37:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:00,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:37:00,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:00,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:37:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:37:00,174 INFO L87 Difference]: Start difference. First operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-26 00:37:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:00,465 INFO L93 Difference]: Finished difference Result 363 states and 514 transitions. [2022-11-26 00:37:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:37:00,468 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 55 [2022-11-26 00:37:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:00,492 INFO L225 Difference]: With dead ends: 363 [2022-11-26 00:37:00,493 INFO L226 Difference]: Without dead ends: 192 [2022-11-26 00:37:00,505 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 [2022-11-26 00:37:00,518 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:00,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:37:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-26 00:37:00,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-26 00:37:00,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-26 00:37:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 262 transitions. [2022-11-26 00:37:00,637 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 262 transitions. Word has length 55 [2022-11-26 00:37:00,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:00,640 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 262 transitions. [2022-11-26 00:37:00,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-26 00:37:00,640 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 262 transitions. [2022-11-26 00:37:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-26 00:37:00,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:00,648 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:00,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:37:00,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:00,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:00,649 INFO L85 PathProgramCache]: Analyzing trace with hash 974803453, now seen corresponding path program 1 times [2022-11-26 00:37:00,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:00,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864152375] [2022-11-26 00:37:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:00,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-26 00:37:08,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:08,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864152375] [2022-11-26 00:37:08,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864152375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:08,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:08,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:37:08,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385407597] [2022-11-26 00:37:08,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:08,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:37:08,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:08,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:37:08,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:37:08,696 INFO L87 Difference]: Start difference. First operand 192 states and 262 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-26 00:37:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:10,752 INFO L93 Difference]: Finished difference Result 398 states and 545 transitions. [2022-11-26 00:37:10,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:37:10,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 57 [2022-11-26 00:37:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:10,758 INFO L225 Difference]: With dead ends: 398 [2022-11-26 00:37:10,763 INFO L226 Difference]: Without dead ends: 235 [2022-11-26 00:37:10,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:37:10,765 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 139 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:10,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1133 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-26 00:37:10,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-26 00:37:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 214. [2022-11-26 00:37:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 113 states have internal predecessors, (131), 83 states have call successors, (83), 18 states have call predecessors, (83), 18 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-11-26 00:37:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 296 transitions. [2022-11-26 00:37:10,829 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 296 transitions. Word has length 57 [2022-11-26 00:37:10,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:10,831 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 296 transitions. [2022-11-26 00:37:10,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-26 00:37:10,832 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 296 transitions. [2022-11-26 00:37:10,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-26 00:37:10,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:10,840 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:10,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:37:10,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:10,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:10,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1771125939, now seen corresponding path program 1 times [2022-11-26 00:37:10,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:10,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309983480] [2022-11-26 00:37:10,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:10,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-26 00:37:11,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:11,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309983480] [2022-11-26 00:37:11,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309983480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:11,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:11,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:37:11,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785059425] [2022-11-26 00:37:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:11,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:37:11,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:11,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:37:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:37:11,430 INFO L87 Difference]: Start difference. First operand 214 states and 296 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-26 00:37:12,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:12,057 INFO L93 Difference]: Finished difference Result 269 states and 366 transitions. [2022-11-26 00:37:12,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:37:12,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 59 [2022-11-26 00:37:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:12,067 INFO L225 Difference]: With dead ends: 269 [2022-11-26 00:37:12,067 INFO L226 Difference]: Without dead ends: 231 [2022-11-26 00:37:12,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:37:12,072 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 8 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:12,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1212 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:37:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-26 00:37:12,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 216. [2022-11-26 00:37:12,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 83 states have call successors, (83), 18 states have call predecessors, (83), 18 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-11-26 00:37:12,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 298 transitions. [2022-11-26 00:37:12,131 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 298 transitions. Word has length 59 [2022-11-26 00:37:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:12,132 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 298 transitions. [2022-11-26 00:37:12,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-26 00:37:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 298 transitions. [2022-11-26 00:37:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-26 00:37:12,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:12,135 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:12,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:37:12,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:12,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:12,137 INFO L85 PathProgramCache]: Analyzing trace with hash 360017072, now seen corresponding path program 1 times [2022-11-26 00:37:12,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:12,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585667392] [2022-11-26 00:37:12,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:12,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-26 00:37:17,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585667392] [2022-11-26 00:37:17,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585667392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:17,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:17,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-26 00:37:17,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271852441] [2022-11-26 00:37:17,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:17,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:37:17,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:37:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:37:17,683 INFO L87 Difference]: Start difference. First operand 216 states and 298 transitions. Second operand has 14 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-26 00:37:21,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:21,847 INFO L93 Difference]: Finished difference Result 315 states and 447 transitions. [2022-11-26 00:37:21,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:37:21,848 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 61 [2022-11-26 00:37:21,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:21,853 INFO L225 Difference]: With dead ends: 315 [2022-11-26 00:37:21,853 INFO L226 Difference]: Without dead ends: 313 [2022-11-26 00:37:21,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-11-26 00:37:21,857 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 201 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:21,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1165 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-26 00:37:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-26 00:37:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 234. [2022-11-26 00:37:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 125 states have (on average 1.16) internal successors, (145), 127 states have internal predecessors, (145), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-26 00:37:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 320 transitions. [2022-11-26 00:37:21,928 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 320 transitions. Word has length 61 [2022-11-26 00:37:21,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:21,929 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 320 transitions. [2022-11-26 00:37:21,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-26 00:37:21,929 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 320 transitions. [2022-11-26 00:37:21,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-26 00:37:21,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:21,935 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:21,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:37:21,935 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash 249299340, now seen corresponding path program 1 times [2022-11-26 00:37:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:21,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768377883] [2022-11-26 00:37:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:29,243 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-26 00:37:29,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:29,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768377883] [2022-11-26 00:37:29,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768377883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:29,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:29,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-26 00:37:29,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104921386] [2022-11-26 00:37:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:29,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:37:29,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:37:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:37:29,246 INFO L87 Difference]: Start difference. First operand 234 states and 320 transitions. Second operand has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-26 00:37:31,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:31,630 INFO L93 Difference]: Finished difference Result 469 states and 644 transitions. [2022-11-26 00:37:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:37:31,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 61 [2022-11-26 00:37:31,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:31,633 INFO L225 Difference]: With dead ends: 469 [2022-11-26 00:37:31,633 INFO L226 Difference]: Without dead ends: 308 [2022-11-26 00:37:31,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-26 00:37:31,635 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 169 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:31,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1621 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-26 00:37:31,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-26 00:37:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 250. [2022-11-26 00:37:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 137 states have internal predecessors, (156), 94 states have call successors, (94), 20 states have call predecessors, (94), 20 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-26 00:37:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 343 transitions. [2022-11-26 00:37:31,692 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 343 transitions. Word has length 61 [2022-11-26 00:37:31,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:31,693 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 343 transitions. [2022-11-26 00:37:31,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-26 00:37:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 343 transitions. [2022-11-26 00:37:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-26 00:37:31,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:31,695 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 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] [2022-11-26 00:37:31,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:37:31,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1682617456, now seen corresponding path program 1 times [2022-11-26 00:37:31,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:31,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003858550] [2022-11-26 00:37:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:31,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-26 00:37:47,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:47,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003858550] [2022-11-26 00:37:47,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003858550] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:37:47,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839045806] [2022-11-26 00:37:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:47,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:37:47,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:47,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:37:47,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a02f3fc-2846-4fd1-b3f4-ef61c64340ad/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:37:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:48,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 140 conjunts are in the unsatisfiable core [2022-11-26 00:37:48,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:37:48,693 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 6 treesize of output 5 [2022-11-26 00:37:49,713 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-26 00:37:49,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-26 00:37:49,825 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 [2022-11-26 00:37:49,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2022-11-26 00:37:52,375 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-26 00:37:52,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-26 00:38:02,886 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 27 treesize of output 27 [2022-11-26 00:38:02,898 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 [2022-11-26 00:38:41,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:38:41,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:38:41,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 305 treesize of output 289 [2022-11-26 00:39:05,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:39:05,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2022-11-26 00:39:05,231 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 28 treesize of output 23 [2022-11-26 00:39:08,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:39:08,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 125 treesize of output 109 [2022-11-26 00:39:08,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:39:08,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 33 treesize of output 25 [2022-11-26 00:39:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:39:09,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:39:13,217 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-26 00:48:00,941 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.