./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:09:18,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:09:18,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:09:18,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:09:18,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:09:18,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:09:18,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:09:18,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:09:18,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:09:18,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:09:18,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:09:18,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:09:18,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:09:18,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:09:18,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:09:18,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:09:18,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:09:18,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:09:18,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:09:18,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:09:18,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:09:18,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:09:18,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:09:18,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:09:18,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:09:18,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:09:18,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:09:18,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:09:18,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:09:18,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:09:18,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:09:18,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:09:18,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:09:18,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:09:18,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:09:18,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:09:18,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:09:18,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:09:18,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:09:18,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:09:18,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:09:18,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:09:18,400 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:09:18,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:09:18,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:09:18,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:09:18,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:09:18,401 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:09:18,402 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:09:18,402 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:09:18,402 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:09:18,402 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:09:18,402 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:09:18,402 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:09:18,403 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:09:18,403 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:09:18,403 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:09:18,403 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:09:18,403 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:09:18,404 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:09:18,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:09:18,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:09:18,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:09:18,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:09:18,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:09:18,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:09:18,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:09:18,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:09:18,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:09:18,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:09:18,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:09:18,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:09:18,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:09:18,410 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:09:18,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:09:18,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:09:18,410 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:09:18,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:09:18,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:09:18,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:09:18,412 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_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2022-11-22 00:09:18,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:09:18,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:09:18,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:09:18,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:09:18,686 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:09:18,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-11-22 00:09:21,832 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:09:22,392 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:09:22,393 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-11-22 00:09:22,451 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/data/9c59043f0/99cffd169865403c93db8766b7786053/FLAG0fc404bcc [2022-11-22 00:09:22,474 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/data/9c59043f0/99cffd169865403c93db8766b7786053 [2022-11-22 00:09:22,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:09:22,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:09:22,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:09:22,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:09:22,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:09:22,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:09:22" (1/1) ... [2022-11-22 00:09:22,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f382165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:22, skipping insertion in model container [2022-11-22 00:09:22,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:09:22" (1/1) ... [2022-11-22 00:09:22,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:09:22,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:09:22,973 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_486c6023-09c5-450f-94c3-b94a21c96c7a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-11-22 00:09:22,982 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_486c6023-09c5-450f-94c3-b94a21c96c7a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-11-22 00:09:24,122 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,127 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,128 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,129 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,130 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,144 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,145 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,147 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,148 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,596 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 00:09:24,597 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 00:09:24,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 00:09:24,600 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 00:09:24,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 00:09:24,602 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 00:09:24,603 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 00:09:24,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 00:09:24,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 00:09:24,605 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 00:09:24,785 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 00:09:24,810 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,810 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,897 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:24,897 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:09:25,092 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:09:25,122 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_486c6023-09c5-450f-94c3-b94a21c96c7a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-11-22 00:09:25,123 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_486c6023-09c5-450f-94c3-b94a21c96c7a/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-11-22 00:09:25,175 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,176 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,176 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,177 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,179 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,197 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,201 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,203 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,204 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,257 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-22 00:09:25,258 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-22 00:09:25,263 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-22 00:09:25,264 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-22 00:09:25,265 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-22 00:09:25,266 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-22 00:09:25,266 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-22 00:09:25,267 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-22 00:09:25,268 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-22 00:09:25,274 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-22 00:09:25,310 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-22 00:09:25,365 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,366 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,405 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,405 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-22 00:09:25,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:09:25,629 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:09:25,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25 WrapperNode [2022-11-22 00:09:25,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:09:25,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:09:25,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:09:25,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:09:25,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:25,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:25,859 INFO L138 Inliner]: procedures = 691, calls = 2636, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1064 [2022-11-22 00:09:25,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:09:25,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:09:25,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:09:25,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:09:25,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:25,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:25,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:25,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:25,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:25,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:26,015 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:26,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:26,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:09:26,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:09:26,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:09:26,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:09:26,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (1/1) ... [2022-11-22 00:09:26,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:09:26,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:09:26,084 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:09:26,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:09:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-22 00:09:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-22 00:09:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-22 00:09:26,133 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-22 00:09:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:09:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-22 00:09:26,134 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-22 00:09:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-22 00:09:26,135 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-22 00:09:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:09:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-22 00:09:26,136 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-22 00:09:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 00:09:26,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 00:09:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:09:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:09:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:09:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-22 00:09:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-22 00:09:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:09:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:09:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-22 00:09:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-22 00:09:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-22 00:09:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-22 00:09:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-22 00:09:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-22 00:09:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 00:09:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 00:09:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-22 00:09:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-22 00:09:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-22 00:09:26,139 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-22 00:09:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:09:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-22 00:09:26,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-22 00:09:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:09:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:09:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-22 00:09:26,141 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-22 00:09:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-22 00:09:26,142 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-22 00:09:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-11-22 00:09:26,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-11-22 00:09:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-22 00:09:26,143 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-22 00:09:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:09:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:09:26,528 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:09:26,530 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:09:28,182 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:09:28,513 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:09:28,513 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 00:09:28,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:09:28 BoogieIcfgContainer [2022-11-22 00:09:28,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:09:28,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:09:28,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:09:28,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:09:28,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:09:22" (1/3) ... [2022-11-22 00:09:28,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec95939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:09:28, skipping insertion in model container [2022-11-22 00:09:28,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:09:25" (2/3) ... [2022-11-22 00:09:28,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec95939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:09:28, skipping insertion in model container [2022-11-22 00:09:28,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:09:28" (3/3) ... [2022-11-22 00:09:28,535 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2022-11-22 00:09:28,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:09:28,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:09:28,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:09:28,638 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;@792ac4bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:09:28,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:09:28,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-22 00:09:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 00:09:28,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:28,656 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:28,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:09:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:28,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1899896275, now seen corresponding path program 1 times [2022-11-22 00:09:28,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:28,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34434998] [2022-11-22 00:09:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:28,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 00:09:29,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:29,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34434998] [2022-11-22 00:09:29,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34434998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:29,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:29,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:09:29,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795965990] [2022-11-22 00:09:29,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:29,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 00:09:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 00:09:29,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:09:29,398 INFO L87 Difference]: Start difference. First operand has 194 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-22 00:09:29,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:29,595 INFO L93 Difference]: Finished difference Result 363 states and 514 transitions. [2022-11-22 00:09:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 00:09:29,602 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 55 [2022-11-22 00:09:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:29,618 INFO L225 Difference]: With dead ends: 363 [2022-11-22 00:09:29,621 INFO L226 Difference]: Without dead ends: 192 [2022-11-22 00:09:29,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 00:09:29,634 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:29,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:09:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-22 00:09:29,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-22 00:09:29,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-11-22 00:09:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 262 transitions. [2022-11-22 00:09:29,734 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 262 transitions. Word has length 55 [2022-11-22 00:09:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:29,736 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 262 transitions. [2022-11-22 00:09:29,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-22 00:09:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 262 transitions. [2022-11-22 00:09:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 00:09:29,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:29,739 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:29,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:09:29,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:09:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:29,742 INFO L85 PathProgramCache]: Analyzing trace with hash 974803453, now seen corresponding path program 1 times [2022-11-22 00:09:29,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:29,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910517118] [2022-11-22 00:09:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:29,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 00:09:36,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:36,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910517118] [2022-11-22 00:09:36,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910517118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:36,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:36,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 00:09:36,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985257547] [2022-11-22 00:09:36,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:36,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 00:09:36,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 00:09:36,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:09:36,801 INFO L87 Difference]: Start difference. First operand 192 states and 262 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-22 00:09:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:38,718 INFO L93 Difference]: Finished difference Result 398 states and 545 transitions. [2022-11-22 00:09:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:09:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 57 [2022-11-22 00:09:38,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:38,722 INFO L225 Difference]: With dead ends: 398 [2022-11-22 00:09:38,722 INFO L226 Difference]: Without dead ends: 235 [2022-11-22 00:09:38,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:09:38,724 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 143 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:38,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1133 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:09:38,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-22 00:09:38,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 214. [2022-11-22 00:09:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 113 states have internal predecessors, (131), 83 states have call successors, (83), 18 states have call predecessors, (83), 18 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-11-22 00:09:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 296 transitions. [2022-11-22 00:09:38,785 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 296 transitions. Word has length 57 [2022-11-22 00:09:38,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:38,786 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 296 transitions. [2022-11-22 00:09:38,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-22 00:09:38,787 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 296 transitions. [2022-11-22 00:09:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-22 00:09:38,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:38,797 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:38,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:09:38,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:09:38,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:38,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1771125939, now seen corresponding path program 1 times [2022-11-22 00:09:38,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:38,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247476411] [2022-11-22 00:09:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:38,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 00:09:39,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:39,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247476411] [2022-11-22 00:09:39,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247476411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:39,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:39,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:09:39,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11066141] [2022-11-22 00:09:39,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:39,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:09:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:09:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:09:39,330 INFO L87 Difference]: Start difference. First operand 214 states and 296 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-22 00:09:39,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:39,873 INFO L93 Difference]: Finished difference Result 269 states and 366 transitions. [2022-11-22 00:09:39,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:09:39,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 59 [2022-11-22 00:09:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:39,884 INFO L225 Difference]: With dead ends: 269 [2022-11-22 00:09:39,888 INFO L226 Difference]: Without dead ends: 231 [2022-11-22 00:09:39,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:09:39,891 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 8 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:39,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1212 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:09:39,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-22 00:09:39,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 216. [2022-11-22 00:09:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 83 states have call successors, (83), 18 states have call predecessors, (83), 18 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-11-22 00:09:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 298 transitions. [2022-11-22 00:09:39,931 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 298 transitions. Word has length 59 [2022-11-22 00:09:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:39,937 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 298 transitions. [2022-11-22 00:09:39,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-22 00:09:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 298 transitions. [2022-11-22 00:09:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 00:09:39,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:39,940 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:39,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:09:39,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:09:39,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash 360017072, now seen corresponding path program 1 times [2022-11-22 00:09:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:39,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374836548] [2022-11-22 00:09:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 00:09:45,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:45,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374836548] [2022-11-22 00:09:45,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374836548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:45,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:45,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-22 00:09:45,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631855928] [2022-11-22 00:09:45,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:45,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 00:09:45,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:45,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 00:09:45,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-22 00:09:45,218 INFO L87 Difference]: Start difference. First operand 216 states and 298 transitions. Second operand has 14 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-22 00:09:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:48,970 INFO L93 Difference]: Finished difference Result 315 states and 447 transitions. [2022-11-22 00:09:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:09:48,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 61 [2022-11-22 00:09:48,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:48,975 INFO L225 Difference]: With dead ends: 315 [2022-11-22 00:09:48,975 INFO L226 Difference]: Without dead ends: 313 [2022-11-22 00:09:48,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-11-22 00:09:48,977 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 205 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:48,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1194 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-22 00:09:48,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-22 00:09:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 234. [2022-11-22 00:09:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 125 states have (on average 1.16) internal successors, (145), 127 states have internal predecessors, (145), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-22 00:09:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 320 transitions. [2022-11-22 00:09:49,021 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 320 transitions. Word has length 61 [2022-11-22 00:09:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:49,021 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 320 transitions. [2022-11-22 00:09:49,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-22 00:09:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 320 transitions. [2022-11-22 00:09:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 00:09:49,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:49,023 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:49,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:09:49,024 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:09:49,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:49,024 INFO L85 PathProgramCache]: Analyzing trace with hash 249299340, now seen corresponding path program 1 times [2022-11-22 00:09:49,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:49,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014385860] [2022-11-22 00:09:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:49,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 00:09:55,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:55,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014385860] [2022-11-22 00:09:55,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014385860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:55,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:09:55,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 00:09:55,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599599683] [2022-11-22 00:09:55,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:55,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:09:55,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:55,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:09:55,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:09:55,618 INFO L87 Difference]: Start difference. First operand 234 states and 320 transitions. Second operand has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-22 00:09:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:57,875 INFO L93 Difference]: Finished difference Result 469 states and 644 transitions. [2022-11-22 00:09:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:09:57,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 61 [2022-11-22 00:09:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:57,880 INFO L225 Difference]: With dead ends: 469 [2022-11-22 00:09:57,880 INFO L226 Difference]: Without dead ends: 308 [2022-11-22 00:09:57,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:09:57,882 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 176 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:57,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 1621 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 00:09:57,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-22 00:09:57,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 250. [2022-11-22 00:09:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 137 states have internal predecessors, (156), 94 states have call successors, (94), 20 states have call predecessors, (94), 20 states have return successors, (93), 92 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-22 00:09:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 343 transitions. [2022-11-22 00:09:57,938 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 343 transitions. Word has length 61 [2022-11-22 00:09:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:57,938 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 343 transitions. [2022-11-22 00:09:57,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-22 00:09:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 343 transitions. [2022-11-22 00:09:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 00:09:57,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:57,941 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:09:57,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:09:57,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:09:57,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:57,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1682617456, now seen corresponding path program 1 times [2022-11-22 00:09:57,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:57,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379419127] [2022-11-22 00:09:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:57,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 00:10:13,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:13,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379419127] [2022-11-22 00:10:13,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379419127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:13,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056364505] [2022-11-22 00:10:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:13,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:13,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:13,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:13,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486c6023-09c5-450f-94c3-b94a21c96c7a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:10:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:14,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 140 conjunts are in the unsatisfiable core [2022-11-22 00:10:14,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:14,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 00:10:15,427 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:10:15,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-22 00:10:15,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:10:15,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:10:17,727 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-22 00:10:17,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-22 00:10:28,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-22 00:10:28,219 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 [2022-11-22 00:11:06,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:11:06,417 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:11:06,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 305 treesize of output 289 [2022-11-22 00:11:29,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:11:29,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2022-11-22 00:11:29,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-22 00:11:32,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:11:32,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 125 treesize of output 109 [2022-11-22 00:11:32,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:11:32,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 25 [2022-11-22 00:11:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 00:11:35,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:11:37,912 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 76449 disjunctions. This might take some time... [2022-11-22 00:19:23,265 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 76449 disjunctions.