./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS --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 f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 --- 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-8393723 [2022-11-19 08:09:44,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:09:44,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:09:44,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:09:44,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:09:44,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:09:44,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:09:44,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:09:44,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:09:44,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:09:44,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:09:44,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:09:44,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:09:44,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:09:44,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:09:44,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:09:44,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:09:44,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:09:44,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:09:44,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:09:44,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:09:44,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:09:44,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:09:44,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:09:44,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:09:44,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:09:44,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:09:44,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:09:44,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:09:44,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:09:44,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:09:44,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:09:44,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:09:44,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:09:44,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:09:44,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:09:44,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:09:44,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:09:44,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:09:44,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:09:44,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:09:44,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:09:44,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:09:44,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:09:44,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:09:44,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:09:44,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:09:44,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:09:44,345 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:09:44,345 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:09:44,345 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:09:44,346 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:09:44,347 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:09:44,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:09:44,347 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:09:44,347 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:09:44,348 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:09:44,348 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:09:44,348 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:09:44,348 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:09:44,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:09:44,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:09:44,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:09:44,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:09:44,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:09:44,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:09:44,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:09:44,351 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:09:44,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:09:44,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:09:44,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:09:44,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:09:44,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:09:44,352 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:09:44,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:09:44,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:09:44,353 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:09:44,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:09:44,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:09:44,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:09:44,354 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_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f85fffa00ce152c2185c303de3856b218143afacade5a3da3d11c284e86ce457 [2022-11-19 08:09:44,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:09:44,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:09:44,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:09:44,694 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:09:44,695 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:09:44,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2022-11-19 08:09:44,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/data/9b95a8d82/f39d5897bd60431aac9e72c2045a22eb/FLAG6b3f96730 [2022-11-19 08:09:45,682 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:09:45,682 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i [2022-11-19 08:09:45,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/data/9b95a8d82/f39d5897bd60431aac9e72c2045a22eb/FLAG6b3f96730 [2022-11-19 08:09:46,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/data/9b95a8d82/f39d5897bd60431aac9e72c2045a22eb [2022-11-19 08:09:46,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:09:46,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:09:46,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:09:46,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:09:46,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:09:46,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:09:46" (1/1) ... [2022-11-19 08:09:46,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52834362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:46, skipping insertion in model container [2022-11-19 08:09:46,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:09:46" (1/1) ... [2022-11-19 08:09:46,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:09:46,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:09:46,744 WARN L234 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_b1adc6bb-4634-41a1-92ab-6d04f31db72b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2022-11-19 08:09:46,752 WARN L234 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_b1adc6bb-4634-41a1-92ab-6d04f31db72b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2022-11-19 08:09:47,926 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:47,927 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:47,932 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:47,933 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:47,934 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:47,946 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:47,955 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:47,960 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:47,961 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,376 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 08:09:48,377 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 08:09:48,378 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 08:09:48,380 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 08:09:48,381 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 08:09:48,382 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 08:09:48,382 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 08:09:48,383 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 08:09:48,384 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 08:09:48,384 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 08:09:48,532 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 08:09:48,663 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,663 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:09:48,825 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:09:48,857 WARN L234 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_b1adc6bb-4634-41a1-92ab-6d04f31db72b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4505,4518] [2022-11-19 08:09:48,858 WARN L234 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_b1adc6bb-4634-41a1-92ab-6d04f31db72b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_right_trim_pred_harness.i[4565,4578] [2022-11-19 08:09:48,910 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,911 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,911 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,912 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,913 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,930 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,933 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,938 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:48,938 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:49,029 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 08:09:49,030 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 08:09:49,030 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 08:09:49,031 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 08:09:49,032 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 08:09:49,033 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 08:09:49,033 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 08:09:49,034 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 08:09:49,034 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 08:09:49,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 08:09:49,070 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 08:09:49,165 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:49,165 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 08:09:49,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:09:49,426 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:09:49,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49 WrapperNode [2022-11-19 08:09:49,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:09:49,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:09:49,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:09:49,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:09:49,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,623 INFO L138 Inliner]: procedures = 690, calls = 2619, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 799 [2022-11-19 08:09:49,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:09:49,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:09:49,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:09:49,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:09:49,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:09:49,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:09:49,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:09:49,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:09:49,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (1/1) ... [2022-11-19 08:09:49,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:09:49,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:09:49,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:09:49,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:09:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-19 08:09:49,862 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-19 08:09:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:09:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 08:09:49,864 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 08:09:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:09:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 08:09:49,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 08:09:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:09:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:09:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:09:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:09:49,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:09:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 08:09:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 08:09:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-19 08:09:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-19 08:09:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:09:49,867 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:09:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:09:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:09:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:09:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2022-11-19 08:09:49,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2022-11-19 08:09:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:09:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_right_trim_pred [2022-11-19 08:09:49,870 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_right_trim_pred [2022-11-19 08:09:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:09:50,232 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:09:50,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:09:51,623 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:09:51,871 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:09:51,872 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:09:51,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:09:51 BoogieIcfgContainer [2022-11-19 08:09:51,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:09:51,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:09:51,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:09:51,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:09:51,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:09:46" (1/3) ... [2022-11-19 08:09:51,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257cb6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:09:51, skipping insertion in model container [2022-11-19 08:09:51,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:09:49" (2/3) ... [2022-11-19 08:09:51,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257cb6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:09:51, skipping insertion in model container [2022-11-19 08:09:51,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:09:51" (3/3) ... [2022-11-19 08:09:51,889 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_right_trim_pred_harness.i [2022-11-19 08:09:51,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:09:51,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:09:51,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:09:51,993 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;@364f7fed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:09:51,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:09:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-19 08:09:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-19 08:09:52,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:52,012 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:52,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:09:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1706243424, now seen corresponding path program 1 times [2022-11-19 08:09:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:52,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000939497] [2022-11-19 08:09:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:52,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 08:09:52,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:52,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000939497] [2022-11-19 08:09:52,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000939497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:52,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:52,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:09:52,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656101509] [2022-11-19 08:09:52,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:52,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:09:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:52,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:09:52,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:09:52,823 INFO L87 Difference]: Start difference. First operand has 70 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 08:09:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:52,942 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2022-11-19 08:09:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:09:52,945 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2022-11-19 08:09:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:52,954 INFO L225 Difference]: With dead ends: 103 [2022-11-19 08:09:52,955 INFO L226 Difference]: Without dead ends: 64 [2022-11-19 08:09:52,958 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 [2022-11-19 08:09:52,961 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:52,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:09:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-19 08:09:53,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-19 08:09:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-19 08:09:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2022-11-19 08:09:53,010 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 40 [2022-11-19 08:09:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:53,011 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2022-11-19 08:09:53,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 08:09:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2022-11-19 08:09:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 08:09:53,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:53,014 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:53,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:09:53,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:09:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:53,016 INFO L85 PathProgramCache]: Analyzing trace with hash 348988715, now seen corresponding path program 1 times [2022-11-19 08:09:53,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:53,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011960695] [2022-11-19 08:09:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:53,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:09:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 08:09:56,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:09:56,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011960695] [2022-11-19 08:09:56,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011960695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:09:56,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:09:56,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-19 08:09:56,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411673837] [2022-11-19 08:09:56,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:09:56,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:09:56,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:09:56,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:09:56,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:09:56,507 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 08:09:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:09:58,463 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2022-11-19 08:09:58,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 08:09:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2022-11-19 08:09:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:09:58,467 INFO L225 Difference]: With dead ends: 89 [2022-11-19 08:09:58,467 INFO L226 Difference]: Without dead ends: 87 [2022-11-19 08:09:58,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-11-19 08:09:58,469 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 54 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:09:58,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 453 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 08:09:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-19 08:09:58,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 73. [2022-11-19 08:09:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.175) internal successors, (47), 42 states have internal predecessors, (47), 24 states have call successors, (24), 9 states have call predecessors, (24), 8 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-19 08:09:58,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2022-11-19 08:09:58,485 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 42 [2022-11-19 08:09:58,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:09:58,485 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2022-11-19 08:09:58,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 08:09:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2022-11-19 08:09:58,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 08:09:58,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:09:58,488 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:09:58,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:09:58,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:09:58,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:09:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1396918630, now seen corresponding path program 1 times [2022-11-19 08:09:58,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:09:58,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267751186] [2022-11-19 08:09:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:09:58,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:09:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 08:10:04,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:10:04,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267751186] [2022-11-19 08:10:04,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267751186] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:10:04,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449715219] [2022-11-19 08:10:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:10:04,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:10:04,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:10:04,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:10:04,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1adc6bb-4634-41a1-92ab-6d04f31db72b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:10:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:10:04,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-19 08:10:04,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:10:04,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-19 08:10:04,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-19 08:10:05,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-19 08:10:06,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2022-11-19 08:10:06,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-19 08:10:07,717 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-19 08:10:07,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 26 [2022-11-19 08:10:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:10:07,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:09,788 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 14202 disjunctions. This might take some time... [2022-11-19 08:10:24,579 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 13413 disjunctions.