./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:08:51,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:08:51,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:08:51,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:08:51,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:08:51,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:08:51,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:08:51,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:08:51,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:08:51,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:08:51,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:08:51,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:08:51,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:08:51,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:08:51,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:08:51,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:08:51,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:08:51,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:08:51,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:08:51,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:08:51,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:08:51,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:08:51,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:08:51,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:08:51,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:08:51,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:08:51,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:08:51,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:08:51,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:08:51,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:08:51,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:08:51,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:08:51,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:08:51,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:08:51,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:08:51,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:08:51,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:08:51,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:08:51,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:08:51,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:08:51,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:08:51,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:08:52,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:08:52,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:08:52,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:08:52,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:08:52,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:08:52,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:08:52,011 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:08:52,011 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:08:52,011 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:08:52,011 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:08:52,012 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:08:52,017 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:08:52,017 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:08:52,018 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:08:52,018 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:08:52,018 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:08:52,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:08:52,019 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:08:52,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:08:52,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:08:52,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:08:52,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:08:52,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:08:52,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:08:52,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:08:52,023 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:08:52,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:08:52,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:08:52,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:08:52,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:08:52,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:08:52,025 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:08:52,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:08:52,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:08:52,026 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:08:52,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:08:52,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:08:52,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:08:52,027 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_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2022-11-20 20:08:52,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:08:52,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:08:52,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:08:52,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:08:52,454 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:08:52,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-11-20 20:08:56,258 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:08:57,008 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:08:57,009 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-11-20 20:08:57,055 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/data/6942724fa/fca4e290e77740699909559dca3094f2/FLAG44857a5ad [2022-11-20 20:08:57,083 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/data/6942724fa/fca4e290e77740699909559dca3094f2 [2022-11-20 20:08:57,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:08:57,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:08:57,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:08:57,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:08:57,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:08:57,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5eba25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57, skipping insertion in model container [2022-11-20 20:08:57,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:08:57,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:08:57,627 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_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-11-20 20:08:57,639 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_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-11-20 20:08:58,977 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:08:58,979 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:08:58,979 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:08:58,981 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:08:58,982 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:08:59,002 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:08:59,004 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:08:59,006 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:08:59,007 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:08:59,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 20:08:59,599 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 20:08:59,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 20:08:59,602 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 20:08:59,605 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 20:08:59,606 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 20:08:59,607 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 20:08:59,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 20:08:59,610 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 20:08:59,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 20:08:59,856 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 20:09:00,086 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,087 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:09:00,339 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:09:00,370 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_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-11-20 20:09:00,371 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_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-11-20 20:09:00,438 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,438 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,439 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,439 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,440 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,456 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,456 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,458 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,458 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 20:09:00,579 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 20:09:00,580 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 20:09:00,581 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 20:09:00,582 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 20:09:00,583 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 20:09:00,583 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 20:09:00,584 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 20:09:00,585 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 20:09:00,610 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 20:09:00,649 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 20:09:00,739 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,740 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:09:00,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:09:01,202 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:09:01,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01 WrapperNode [2022-11-20 20:09:01,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:09:01,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:09:01,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:09:01,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:09:01,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,455 INFO L138 Inliner]: procedures = 690, calls = 2739, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 830 [2022-11-20 20:09:01,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:09:01,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:09:01,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:09:01,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:09:01,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:09:01,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:09:01,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:09:01,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:09:01,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (1/1) ... [2022-11-20 20:09:01,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:09:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:09:01,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:09:01,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:09:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-11-20 20:09:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-11-20 20:09:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:09:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 20:09:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 20:09:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-11-20 20:09:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-20 20:09:01,655 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-20 20:09:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 20:09:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 20:09:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:09:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 20:09:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 20:09:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 20:09:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 20:09:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 20:09:01,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 20:09:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:09:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:09:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:09:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:09:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:09:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 20:09:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 20:09:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:09:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:09:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 20:09:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 20:09:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 20:09:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 20:09:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-20 20:09:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-20 20:09:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:09:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-20 20:09:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-20 20:09:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:09:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:09:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2022-11-20 20:09:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2022-11-20 20:09:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 20:09:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 20:09:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-20 20:09:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-20 20:09:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-20 20:09:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-20 20:09:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:09:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-11-20 20:09:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2022-11-20 20:09:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2022-11-20 20:09:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:09:02,021 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:09:02,026 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:09:02,309 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-11-20 20:09:03,640 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:09:03,837 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:09:03,837 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 20:09:03,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:09:03 BoogieIcfgContainer [2022-11-20 20:09:03,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:09:03,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:09:03,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:09:03,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:09:03,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:08:57" (1/3) ... [2022-11-20 20:09:03,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143180fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:09:03, skipping insertion in model container [2022-11-20 20:09:03,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:09:01" (2/3) ... [2022-11-20 20:09:03,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143180fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:09:03, skipping insertion in model container [2022-11-20 20:09:03,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:09:03" (3/3) ... [2022-11-20 20:09:03,857 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2022-11-20 20:09:03,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:09:03,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:09:03,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:09:03,968 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;@3c9ad6f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:09:03,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:09:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-20 20:09:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-20 20:09:03,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:03,987 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:03,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash 832461079, now seen corresponding path program 1 times [2022-11-20 20:09:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:04,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349573307] [2022-11-20 20:09:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:04,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:09:05,980 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:05,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349573307] [2022-11-20 20:09:05,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349573307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:05,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:05,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:09:05,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291989472] [2022-11-20 20:09:05,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:05,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:09:05,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:06,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:09:06,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:09:06,047 INFO L87 Difference]: Start difference. First operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:09:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:06,573 INFO L93 Difference]: Finished difference Result 197 states and 275 transitions. [2022-11-20 20:09:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:09:06,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 60 [2022-11-20 20:09:06,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:06,595 INFO L225 Difference]: With dead ends: 197 [2022-11-20 20:09:06,596 INFO L226 Difference]: Without dead ends: 152 [2022-11-20 20:09:06,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:09:06,612 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 21 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:06,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 768 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:09:06,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-20 20:09:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2022-11-20 20:09:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 73 states have internal predecessors, (83), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2022-11-20 20:09:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2022-11-20 20:09:06,717 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2022-11-20 20:09:06,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:06,717 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2022-11-20 20:09:06,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 20:09:06,718 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2022-11-20 20:09:06,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 20:09:06,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:06,729 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:09:06,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:06,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:06,731 INFO L85 PathProgramCache]: Analyzing trace with hash -557245047, now seen corresponding path program 1 times [2022-11-20 20:09:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:06,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448578292] [2022-11-20 20:09:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:06,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:09:07,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:07,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448578292] [2022-11-20 20:09:07,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448578292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:07,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:07,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:09:07,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374231840] [2022-11-20 20:09:07,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:07,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:09:07,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:09:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:09:07,347 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 20:09:07,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:07,532 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2022-11-20 20:09:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:09:07,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2022-11-20 20:09:07,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:07,535 INFO L225 Difference]: With dead ends: 174 [2022-11-20 20:09:07,536 INFO L226 Difference]: Without dead ends: 134 [2022-11-20 20:09:07,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:09:07,538 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:07,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 551 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:09:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-20 20:09:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-20 20:09:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 73 states have (on average 1.178082191780822) internal successors, (86), 76 states have internal predecessors, (86), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2022-11-20 20:09:07,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 171 transitions. [2022-11-20 20:09:07,572 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 171 transitions. Word has length 68 [2022-11-20 20:09:07,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:07,573 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 171 transitions. [2022-11-20 20:09:07,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 20:09:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 171 transitions. [2022-11-20 20:09:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 20:09:07,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:07,578 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:07,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:09:07,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:07,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:07,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1539866196, now seen corresponding path program 1 times [2022-11-20 20:09:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:07,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523132689] [2022-11-20 20:09:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:07,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:09:08,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:08,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523132689] [2022-11-20 20:09:08,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523132689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:08,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:08,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:09:08,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84518190] [2022-11-20 20:09:08,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:08,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:09:08,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:09:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:09:08,519 INFO L87 Difference]: Start difference. First operand 134 states and 171 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-20 20:09:09,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:09,046 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2022-11-20 20:09:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:09:09,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 68 [2022-11-20 20:09:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:09,049 INFO L225 Difference]: With dead ends: 190 [2022-11-20 20:09:09,049 INFO L226 Difference]: Without dead ends: 154 [2022-11-20 20:09:09,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:09:09,051 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 174 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:09,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 861 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:09:09,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-20 20:09:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2022-11-20 20:09:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2022-11-20 20:09:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2022-11-20 20:09:09,076 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 68 [2022-11-20 20:09:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:09,077 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2022-11-20 20:09:09,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-20 20:09:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2022-11-20 20:09:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 20:09:09,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:09,083 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:09,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:09:09,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:09,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1616400264, now seen corresponding path program 1 times [2022-11-20 20:09:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:09,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759713639] [2022-11-20 20:09:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:09,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:09:09,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:09,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759713639] [2022-11-20 20:09:09,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759713639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:09,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:09,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:09:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214006657] [2022-11-20 20:09:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:09,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:09:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:09,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:09:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:09:09,855 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 20:09:10,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:10,036 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2022-11-20 20:09:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:09:10,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2022-11-20 20:09:10,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:10,038 INFO L225 Difference]: With dead ends: 170 [2022-11-20 20:09:10,038 INFO L226 Difference]: Without dead ends: 138 [2022-11-20 20:09:10,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:09:10,040 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:10,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 829 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:09:10,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-20 20:09:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-11-20 20:09:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 77 states have internal predecessors, (88), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-20 20:09:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2022-11-20 20:09:10,054 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2022-11-20 20:09:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:10,054 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2022-11-20 20:09:10,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-20 20:09:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2022-11-20 20:09:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 20:09:10,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:10,056 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:10,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:09:10,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:10,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1793464088, now seen corresponding path program 1 times [2022-11-20 20:09:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:10,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197909068] [2022-11-20 20:09:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:10,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:09:12,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197909068] [2022-11-20 20:09:12,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197909068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:09:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084088175] [2022-11-20 20:09:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:12,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:09:12,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:09:12,325 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:09:12,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df26b4d5-c2d3-40b1-9254-dc19d2fa270d/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:09:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:13,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-20 20:09:13,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:09:13,218 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 [2022-11-20 20:09:17,609 INFO L321 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2022-11-20 20:09:17,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 231 treesize of output 191 [2022-11-20 20:09:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:09:17,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:10:17,965 WARN L233 SmtUtils]: Spent 49.41s on a formula simplification. DAG size of input: 152 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:10:20,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084088175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:10:20,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1747783282] [2022-11-20 20:10:20,343 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-20 20:10:20,344 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:10:20,351 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:10:20,357 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:10:20,358 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:11:25,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-20 20:11:25,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-20 20:11:56,991 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 3235 for LOIs [2022-11-20 20:12:00,703 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 3260 for LOIs [2022-11-20 20:12:40,590 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3306 for LOIs [2022-11-20 20:13:10,077 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:14:26,113 WARN L233 SmtUtils]: Spent 1.23m on a formula simplification that was a NOOP. DAG size: 3240 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:49,147 WARN L233 SmtUtils]: Spent 1.34m on a formula simplification that was a NOOP. DAG size: 3235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)