./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta --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 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e --- 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-dbf71c6-m [2022-10-17 17:36:17,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:36:17,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:36:17,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:36:17,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:36:17,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:36:17,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:36:17,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:36:17,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:36:17,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:36:17,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:36:17,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:36:17,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:36:17,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:36:17,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:36:17,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:36:17,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:36:17,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:36:17,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:36:17,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:36:17,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:36:17,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:36:17,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:36:17,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:36:17,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:36:17,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:36:17,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:36:17,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:36:17,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:36:17,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:36:17,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:36:17,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:36:17,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:36:17,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:36:17,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:36:17,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:36:17,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:36:17,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:36:17,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:36:17,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:36:17,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:36:17,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:36:17,332 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:36:17,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:36:17,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:36:17,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:36:17,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:36:17,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:36:17,338 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:36:17,338 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:36:17,338 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:36:17,338 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:36:17,338 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:36:17,339 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:36:17,339 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:36:17,339 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:36:17,339 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:36:17,339 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:36:17,340 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:36:17,340 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:36:17,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:36:17,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:36:17,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:36:17,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:36:17,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:36:17,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:36:17,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:36:17,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:36:17,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:36:17,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:36:17,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:36:17,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:17,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:36:17,343 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:36:17,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:36:17,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:36:17,353 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:36:17,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:36:17,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:36:17,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:36:17,355 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_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e [2022-10-17 17:36:17,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:36:17,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:36:17,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:36:17,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:36:17,676 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:36:17,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2022-10-17 17:36:17,746 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/data/239e9e86d/7702e3ab2c1e4ed5b2dbe4abd2bf89d7/FLAG024ee3a04 [2022-10-17 17:36:18,719 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:36:18,720 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2022-10-17 17:36:18,755 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/data/239e9e86d/7702e3ab2c1e4ed5b2dbe4abd2bf89d7/FLAG024ee3a04 [2022-10-17 17:36:19,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/data/239e9e86d/7702e3ab2c1e4ed5b2dbe4abd2bf89d7 [2022-10-17 17:36:19,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:36:19,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:36:19,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:19,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:36:19,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:36:19,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:19" (1/1) ... [2022-10-17 17:36:19,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778fbea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:19, skipping insertion in model container [2022-10-17 17:36:19,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:19" (1/1) ... [2022-10-17 17:36:19,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:36:19,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:36:19,595 WARN L230 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_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2022-10-17 17:36:19,605 WARN L230 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_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2022-10-17 17:36:20,747 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:20,748 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:20,749 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:20,749 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:20,751 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:20,766 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:20,767 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:20,769 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:20,773 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,242 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:36:21,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:36:21,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:36:21,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:36:21,248 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:36:21,249 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:36:21,250 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:36:21,251 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:36:21,252 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:36:21,252 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:36:21,468 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:36:21,616 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,616 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:21,739 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:36:21,752 WARN L230 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_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2022-10-17 17:36:21,753 WARN L230 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_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2022-10-17 17:36:21,790 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,791 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,791 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,792 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,797 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,810 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,815 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:21,880 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 17:36:21,881 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 17:36:21,882 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 17:36:21,883 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 17:36:21,887 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 17:36:21,887 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 17:36:21,889 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 17:36:21,889 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 17:36:21,890 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 17:36:21,890 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 17:36:21,980 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 17:36:22,072 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:22,073 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 17:36:22,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:22,457 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:36:22,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22 WrapperNode [2022-10-17 17:36:22,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:22,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:22,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:36:22,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:36:22,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,724 INFO L138 Inliner]: procedures = 691, calls = 2615, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 806 [2022-10-17 17:36:22,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:22,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:36:22,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:36:22,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:36:22,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:36:22,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:36:22,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:36:22,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:36:22,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (1/1) ... [2022-10-17 17:36:22,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:22,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:22,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:36:22,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:36:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2022-10-17 17:36:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2022-10-17 17:36:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:36:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-10-17 17:36:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-10-17 17:36:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:36:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 17:36:22,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 17:36:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:36:22,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:36:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-10-17 17:36:22,956 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-10-17 17:36:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:36:22,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:36:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 17:36:22,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 17:36:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-10-17 17:36:22,958 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-10-17 17:36:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-10-17 17:36:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-10-17 17:36:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:36:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:36:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:36:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:36:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-10-17 17:36:22,961 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-10-17 17:36:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:36:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:36:23,377 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:36:23,380 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:36:24,633 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:36:24,822 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:36:24,822 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 17:36:24,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:24 BoogieIcfgContainer [2022-10-17 17:36:24,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:36:24,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:36:24,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:36:24,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:36:24,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:36:19" (1/3) ... [2022-10-17 17:36:24,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5a6fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:24, skipping insertion in model container [2022-10-17 17:36:24,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:22" (2/3) ... [2022-10-17 17:36:24,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5a6fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:24, skipping insertion in model container [2022-10-17 17:36:24,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:24" (3/3) ... [2022-10-17 17:36:24,839 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_eq_c_str_harness.i [2022-10-17 17:36:24,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:36:24,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:36:24,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:36:24,957 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;@69deb5c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:36:24,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:36:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 48 states have internal predecessors, (59), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-10-17 17:36:24,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 17:36:24,975 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:24,977 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 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] [2022-10-17 17:36:24,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:36:24,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:24,986 INFO L85 PathProgramCache]: Analyzing trace with hash -182093070, now seen corresponding path program 1 times [2022-10-17 17:36:24,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:24,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818535339] [2022-10-17 17:36:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:25,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 17:36:27,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:27,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818535339] [2022-10-17 17:36:27,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818535339] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:27,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084791754] [2022-10-17 17:36:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:27,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:27,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:27,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:27,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:36:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:27,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-17 17:36:27,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 17:36:27,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:36:27,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084791754] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:27,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:36:27,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2022-10-17 17:36:27,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394130171] [2022-10-17 17:36:27,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:28,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:36:28,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:36:28,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:36:28,050 INFO L87 Difference]: Start difference. First operand has 82 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 48 states have internal predecessors, (59), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-17 17:36:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:36:28,328 INFO L93 Difference]: Finished difference Result 132 states and 186 transitions. [2022-10-17 17:36:28,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:36:28,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 52 [2022-10-17 17:36:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:36:28,340 INFO L225 Difference]: With dead ends: 132 [2022-10-17 17:36:28,340 INFO L226 Difference]: Without dead ends: 80 [2022-10-17 17:36:28,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:36:28,347 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:36:28,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:36:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-17 17:36:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-10-17 17:36:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.25) internal successors, (55), 46 states have internal predecessors, (55), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-10-17 17:36:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2022-10-17 17:36:28,412 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 52 [2022-10-17 17:36:28,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:36:28,413 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2022-10-17 17:36:28,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-17 17:36:28,414 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2022-10-17 17:36:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 17:36:28,423 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:28,423 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 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, 1, 1, 1, 1, 1] [2022-10-17 17:36:28,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:36:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:28,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:36:28,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1731146581, now seen corresponding path program 1 times [2022-10-17 17:36:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:28,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037068587] [2022-10-17 17:36:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:32,820 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-17 17:36:32,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:32,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037068587] [2022-10-17 17:36:32,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037068587] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:36:32,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598853865] [2022-10-17 17:36:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:32,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:36:32,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:32,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:36:32,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d4e83c7-a2d4-470a-a491-35952fbe7b4b/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:36:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:33,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 73 conjunts are in the unsatisfiable core [2022-10-17 17:36:33,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:36:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 17:36:34,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:36:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-17 17:36:37,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598853865] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:36:37,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1348850235] [2022-10-17 17:36:37,264 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-10-17 17:36:37,265 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:36:37,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:36:37,276 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:36:37,277 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs