./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bfd0d9ac Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-bfd0d9a [2021-11-01 10:16:59,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-01 10:16:59,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-01 10:16:59,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-01 10:16:59,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-01 10:16:59,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-01 10:16:59,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-01 10:16:59,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-01 10:16:59,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-01 10:16:59,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-01 10:16:59,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-01 10:16:59,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-01 10:16:59,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-01 10:16:59,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-01 10:16:59,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-01 10:16:59,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-01 10:16:59,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-01 10:16:59,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-01 10:16:59,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-01 10:16:59,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-01 10:16:59,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-01 10:16:59,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-01 10:16:59,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-01 10:16:59,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-01 10:16:59,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-01 10:16:59,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-01 10:16:59,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-01 10:16:59,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-01 10:16:59,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-01 10:16:59,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-01 10:16:59,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-01 10:16:59,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-01 10:16:59,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-01 10:16:59,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-01 10:16:59,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-01 10:16:59,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-01 10:16:59,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-01 10:16:59,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-01 10:16:59,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-01 10:16:59,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-01 10:16:59,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-01 10:16:59,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-01 10:16:59,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-01 10:16:59,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-01 10:16:59,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-01 10:16:59,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-01 10:16:59,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-01 10:16:59,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-01 10:16:59,322 INFO L138 SettingsManager]: * Use SBE=true [2021-11-01 10:16:59,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-01 10:16:59,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-01 10:16:59,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-01 10:16:59,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-01 10:16:59,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-01 10:16:59,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-01 10:16:59,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-01 10:16:59,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-01 10:16:59,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-01 10:16:59,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-01 10:16:59,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-01 10:16:59,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-01 10:16:59,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-01 10:16:59,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-01 10:16:59,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-01 10:16:59,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-01 10:16:59,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-01 10:16:59,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-01 10:16:59,325 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-01 10:16:59,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-01 10:16:59,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-01 10:16:59,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-01 10:16:59,326 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-01 10:16:59,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-01 10:16:59,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-01 10:16:59,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-01 10:16:59,558 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-01 10:16:59,559 INFO L275 PluginConnector]: CDTParser initialized [2021-11-01 10:16:59,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-01 10:16:59,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32872c17d/75849bab05da492ea6d7329bfdbc46d2/FLAG20543e860 [2021-11-01 10:17:00,273 INFO L306 CDTParser]: Found 1 translation units. [2021-11-01 10:17:00,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-01 10:17:00,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32872c17d/75849bab05da492ea6d7329bfdbc46d2/FLAG20543e860 [2021-11-01 10:17:00,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32872c17d/75849bab05da492ea6d7329bfdbc46d2 [2021-11-01 10:17:00,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-01 10:17:00,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-01 10:17:00,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-01 10:17:00,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-01 10:17:00,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-01 10:17:00,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 10:17:00" (1/1) ... [2021-11-01 10:17:00,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae42280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:00, skipping insertion in model container [2021-11-01 10:17:00,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 10:17:00" (1/1) ... [2021-11-01 10:17:00,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-01 10:17:00,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-01 10:17:00,778 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-01 10:17:00,786 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-01 10:17:00,807 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-01 10:17:00,814 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-01 10:17:01,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:01,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:01,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:01,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:01,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:01,403 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:01,404 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:01,405 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:01,406 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:01,863 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-01 10:17:01,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-01 10:17:01,865 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-01 10:17:01,866 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-01 10:17:01,867 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-01 10:17:01,867 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-01 10:17:01,868 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-01 10:17:01,868 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-01 10:17:01,868 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-01 10:17:01,869 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-01 10:17:02,047 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-01 10:17:02,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,338 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,356 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,358 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,359 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-01 10:17:02,452 INFO L203 MainTranslator]: Completed pre-run [2021-11-01 10:17:02,471 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-01 10:17:02,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-01 10:17:02,473 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-01 10:17:02,474 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-01 10:17:02,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,547 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-01 10:17:02,547 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-01 10:17:02,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-01 10:17:02,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-01 10:17:02,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-01 10:17:02,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-01 10:17:02,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-01 10:17:02,549 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-01 10:17:02,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-01 10:17:02,550 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-01 10:17:02,562 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-01 10:17:02,620 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,622 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,667 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,676 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,677 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:02,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-01 10:17:02,874 INFO L208 MainTranslator]: Completed translation [2021-11-01 10:17:02,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02 WrapperNode [2021-11-01 10:17:02,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-01 10:17:02,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-01 10:17:02,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-01 10:17:02,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-01 10:17:02,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:02,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:03,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-01 10:17:03,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-01 10:17:03,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-01 10:17:03,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-01 10:17:03,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:03,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:03,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:03,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:03,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:03,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:03,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:03,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-01 10:17:03,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-01 10:17:03,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-01 10:17:03,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-01 10:17:03,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (1/1) ... [2021-11-01 10:17:03,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-01 10:17:03,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-01 10:17:03,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-01 10:17:03,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-01 10:17:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-01 10:17:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-01 10:17:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-01 10:17:03,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-01 10:17:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-01 10:17:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-01 10:17:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-01 10:17:03,623 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !true; [2021-11-01 10:17:03,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-01 10:17:03,628 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-01 10:17:03,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 10:17:03 BoogieIcfgContainer [2021-11-01 10:17:03,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-01 10:17:03,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-01 10:17:03,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-01 10:17:03,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-01 10:17:03,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 10:17:00" (1/3) ... [2021-11-01 10:17:03,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43009116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 10:17:03, skipping insertion in model container [2021-11-01 10:17:03,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:02" (2/3) ... [2021-11-01 10:17:03,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43009116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 10:17:03, skipping insertion in model container [2021-11-01 10:17:03,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 10:17:03" (3/3) ... [2021-11-01 10:17:03,657 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-01 10:17:03,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-01 10:17:03,662 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-01 10:17:03,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-01 10:17:03,715 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-01 10:17:03,715 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-01 10:17:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 51 states have (on average 1.392156862745098) internal successors, (71), 54 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-01 10:17:03,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:03,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:03,735 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1599795525, now seen corresponding path program 1 times [2021-11-01 10:17:03,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 10:17:03,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421578350] [2021-11-01 10:17:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:03,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 10:17:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:04,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 10:17:04,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421578350] [2021-11-01 10:17:04,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421578350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:04,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:04,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-01 10:17:04,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597770474] [2021-11-01 10:17:04,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-01 10:17:04,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 10:17:04,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-01 10:17:04,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-01 10:17:04,067 INFO L87 Difference]: Start difference. First operand has 55 states, 51 states have (on average 1.392156862745098) internal successors, (71), 54 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:04,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:04,168 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2021-11-01 10:17:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-01 10:17:04,170 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-01 10:17:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:04,175 INFO L225 Difference]: With dead ends: 106 [2021-11-01 10:17:04,175 INFO L226 Difference]: Without dead ends: 50 [2021-11-01 10:17:04,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-01 10:17:04,180 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.89ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:04,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 77.89ms Time] [2021-11-01 10:17:04,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-01 10:17:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-01 10:17:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-11-01 10:17:04,203 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 25 [2021-11-01 10:17:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:04,203 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-11-01 10:17:04,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-11-01 10:17:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-01 10:17:04,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:04,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:04,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-01 10:17:04,205 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:04,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1892036256, now seen corresponding path program 1 times [2021-11-01 10:17:04,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 10:17:04,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29552155] [2021-11-01 10:17:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:04,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 10:17:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:04,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 10:17:04,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29552155] [2021-11-01 10:17:04,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29552155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:04,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:04,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-01 10:17:04,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989330770] [2021-11-01 10:17:04,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-01 10:17:04,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 10:17:04,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-01 10:17:04,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-01 10:17:04,366 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:04,592 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-11-01 10:17:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-01 10:17:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-01 10:17:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:04,594 INFO L225 Difference]: With dead ends: 67 [2021-11-01 10:17:04,594 INFO L226 Difference]: Without dead ends: 50 [2021-11-01 10:17:04,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 109.51ms TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-01 10:17:04,595 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 160 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 100.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.13ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.95ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:04,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 0 Invalid, 224 Unknown, 0 Unchecked, 3.13ms Time], IncrementalHoareTripleChecker [10 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 123.95ms Time] [2021-11-01 10:17:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-01 10:17:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-01 10:17:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-11-01 10:17:04,601 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 26 [2021-11-01 10:17:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:04,601 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-11-01 10:17:04,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-11-01 10:17:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-01 10:17:04,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:04,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:04,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-01 10:17:04,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1472602148, now seen corresponding path program 1 times [2021-11-01 10:17:04,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 10:17:04,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011201859] [2021-11-01 10:17:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:04,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 10:17:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:04,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 10:17:04,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011201859] [2021-11-01 10:17:04,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011201859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:04,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:04,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-01 10:17:04,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112622917] [2021-11-01 10:17:04,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-01 10:17:04,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 10:17:04,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-01 10:17:04,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-01 10:17:04,773 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:05,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:05,054 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-11-01 10:17:05,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-01 10:17:05,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-01 10:17:05,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:05,055 INFO L225 Difference]: With dead ends: 50 [2021-11-01 10:17:05,055 INFO L226 Difference]: Without dead ends: 48 [2021-11-01 10:17:05,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 157.13ms TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-11-01 10:17:05,056 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.16ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:05,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 305 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [27 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 152.16ms Time] [2021-11-01 10:17:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-01 10:17:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-01 10:17:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-11-01 10:17:05,060 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 27 [2021-11-01 10:17:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:05,060 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-11-01 10:17:05,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-11-01 10:17:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 10:17:05,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:05,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:05,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-01 10:17:05,061 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:05,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:05,062 INFO L85 PathProgramCache]: Analyzing trace with hash -788472151, now seen corresponding path program 1 times [2021-11-01 10:17:05,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 10:17:05,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984059678] [2021-11-01 10:17:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:05,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 10:17:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:05,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 10:17:05,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984059678] [2021-11-01 10:17:05,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984059678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:05,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:05,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-01 10:17:05,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872482448] [2021-11-01 10:17:05,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-01 10:17:05,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 10:17:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-01 10:17:05,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-01 10:17:05,332 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:05,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:05,550 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-11-01 10:17:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-01 10:17:05,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-01 10:17:05,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:05,551 INFO L225 Difference]: With dead ends: 48 [2021-11-01 10:17:05,551 INFO L226 Difference]: Without dead ends: 46 [2021-11-01 10:17:05,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 104.81ms TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-11-01 10:17:05,552 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.13ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.42ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:05,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 210 Unknown, 0 Unchecked, 1.13ms Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 123.42ms Time] [2021-11-01 10:17:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-01 10:17:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-01 10:17:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-11-01 10:17:05,557 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 31 [2021-11-01 10:17:05,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:05,557 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-11-01 10:17:05,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:05,557 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-11-01 10:17:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-01 10:17:05,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:05,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:05,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-01 10:17:05,559 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:05,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1439752775, now seen corresponding path program 1 times [2021-11-01 10:17:05,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 10:17:05,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686124275] [2021-11-01 10:17:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:05,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 10:17:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:06,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-01 10:17:06,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686124275] [2021-11-01 10:17:06,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686124275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:06,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:06,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-01 10:17:06,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484357307] [2021-11-01 10:17:06,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-01 10:17:06,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-01 10:17:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-01 10:17:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-01 10:17:06,009 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:06,252 INFO L93 Difference]: Finished difference Result 70 states and 69 transitions. [2021-11-01 10:17:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-01 10:17:06,252 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-01 10:17:06,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:06,253 INFO L225 Difference]: With dead ends: 70 [2021-11-01 10:17:06,253 INFO L226 Difference]: Without dead ends: 46 [2021-11-01 10:17:06,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 137.52ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-01 10:17:06,254 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 212 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156.11ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:06,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 0 Invalid, 271 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [14 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 156.11ms Time] [2021-11-01 10:17:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-01 10:17:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-01 10:17:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0) internal successors, (45), 45 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2021-11-01 10:17:06,258 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 36 [2021-11-01 10:17:06,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:06,258 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2021-11-01 10:17:06,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:06,259 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2021-11-01 10:17:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-01 10:17:06,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:06,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:06,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-01 10:17:06,260 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:06,260 INFO L85 PathProgramCache]: Analyzing trace with hash -740992344, now seen corresponding path program 1 times [2021-11-01 10:17:06,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-01 10:17:06,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212892921] [2021-11-01 10:17:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:06,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-01 10:17:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-01 10:17:06,435 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-01 10:17:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-01 10:17:06,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-01 10:17:06,624 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-01 10:17:06,624 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-01 10:17:06,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-01 10:17:06,626 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-01 10:17:06,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-01 10:17:06,628 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-01 10:17:06,630 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-01 10:17:06,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.11 10:17:06 BoogieIcfgContainer [2021-11-01 10:17:06,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-01 10:17:06,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-01 10:17:06,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-01 10:17:06,688 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-01 10:17:06,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 10:17:03" (3/4) ... [2021-11-01 10:17:06,690 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-01 10:17:06,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-01 10:17:06,691 INFO L158 Benchmark]: Toolchain (without parser) took 6271.50ms. Allocated memory was 115.3MB in the beginning and 308.3MB in the end (delta: 192.9MB). Free memory was 69.1MB in the beginning and 197.5MB in the end (delta: -128.4MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. [2021-11-01 10:17:06,691 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory was 31.3MB in the beginning and 31.3MB in the end (delta: 34.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-01 10:17:06,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2452.52ms. Allocated memory was 115.3MB in the beginning and 169.9MB in the end (delta: 54.5MB). Free memory was 68.9MB in the beginning and 60.1MB in the end (delta: 8.8MB). Peak memory consumption was 89.2MB. Max. memory is 16.1GB. [2021-11-01 10:17:06,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 181.32ms. Allocated memory was 169.9MB in the beginning and 228.6MB in the end (delta: 58.7MB). Free memory was 60.1MB in the beginning and 157.3MB in the end (delta: -97.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-11-01 10:17:06,692 INFO L158 Benchmark]: Boogie Preprocessor took 64.11ms. Allocated memory is still 228.6MB. Free memory was 157.3MB in the beginning and 152.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-01 10:17:06,692 INFO L158 Benchmark]: RCFGBuilder took 523.15ms. Allocated memory is still 228.6MB. Free memory was 152.1MB in the beginning and 118.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-01 10:17:06,692 INFO L158 Benchmark]: TraceAbstraction took 3040.47ms. Allocated memory was 228.6MB in the beginning and 308.3MB in the end (delta: 79.7MB). Free memory was 118.5MB in the beginning and 197.5MB in the end (delta: -79.0MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. [2021-11-01 10:17:06,692 INFO L158 Benchmark]: Witness Printer took 2.57ms. Allocated memory is still 308.3MB. Free memory is still 197.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-01 10:17:06,694 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 73.4MB. Free memory was 31.3MB in the beginning and 31.3MB in the end (delta: 34.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2452.52ms. Allocated memory was 115.3MB in the beginning and 169.9MB in the end (delta: 54.5MB). Free memory was 68.9MB in the beginning and 60.1MB in the end (delta: 8.8MB). Peak memory consumption was 89.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 181.32ms. Allocated memory was 169.9MB in the beginning and 228.6MB in the end (delta: 58.7MB). Free memory was 60.1MB in the beginning and 157.3MB in the end (delta: -97.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.11ms. Allocated memory is still 228.6MB. Free memory was 157.3MB in the beginning and 152.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 523.15ms. Allocated memory is still 228.6MB. Free memory was 152.1MB in the beginning and 118.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3040.47ms. Allocated memory was 228.6MB in the beginning and 308.3MB in the end (delta: 79.7MB). Free memory was 118.5MB in the beginning and 197.5MB in the end (delta: -79.0MB). Peak memory consumption was 81.4MB. Max. memory is 16.1GB. * Witness Printer took 2.57ms. Allocated memory is still 308.3MB. Free memory is still 197.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] size_t cap = nondet_uint64_t(); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L6899] return malloc(size); [L6834] const char *str = bounded_malloc(cap); [L6838] str[cap - 1] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L6839] return str; VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L261] return __VERIFIER_nondet_bool(); [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) [L266] return __VERIFIER_nondet_ulong(); [L6832] size_t cap = nondet_uint64_t(); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L6899] return malloc(size); [L6834] const char *str = bounded_malloc(cap); [L6838] str[cap - 1] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L6839] return str; VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L6272] return str && ((((1)) == 0) || ((str))); VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L10797-L10798] _Bool rval = !strcmp(a, b); [L6272] return str && ((((1)) == 0) || ((str))); VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L10799] aws_c_string_is_valid(a) && aws_c_string_is_valid(b) [L6272] return str && ((((1)) == 0) || ((str))); VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L10799] aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L223] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L10799] return rval; VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L223] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L7119] size_t i = nondet_uint64_t(); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L7123] a[i] [L7123] b[i] [L223] COND TRUE !cond VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] [L223] reach_error() VAL [s_can_fail_allocator_static={259:0}, s_tolower_table={261:0}] - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2922.22ms, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 10.73ms, AutomataDifference: 1140.54ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.17ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 654 SdHoareTripleChecker+Valid, 633.52ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 654 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 506.26ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 551 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1009 IncrementalHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 0 mSDtfsCounter, 1009 mSolverCounterSat, 7.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 509.00ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 28.02ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.83ms SsaConstructionTime, 648.90ms SatisfiabilityAnalysisTime, 679.34ms InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 613 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-01 10:17:06,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-bfd0d9a [2021-11-01 10:17:08,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-01 10:17:08,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-01 10:17:08,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-11-01 10:17:08,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-01 10:17:08,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-01 10:17:08,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-01 10:17:08,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-01 10:17:08,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-01 10:17:08,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-01 10:17:08,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-01 10:17:08,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-01 10:17:08,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-01 10:17:08,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-01 10:17:08,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-01 10:17:08,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-01 10:17:08,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-01 10:17:08,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-01 10:17:08,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-01 10:17:08,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-01 10:17:08,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-01 10:17:08,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-01 10:17:08,518 INFO L138 SettingsManager]: * Use SBE=true [2021-11-01 10:17:08,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-01 10:17:08,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-01 10:17:08,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-01 10:17:08,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-01 10:17:08,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-01 10:17:08,519 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-01 10:17:08,519 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-01 10:17:08,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-01 10:17:08,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-01 10:17:08,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-01 10:17:08,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-01 10:17:08,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-01 10:17:08,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-01 10:17:08,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-01 10:17:08,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-01 10:17:08,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-01 10:17:08,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-01 10:17:08,521 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-01 10:17:08,521 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-01 10:17:08,521 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-01 10:17:08,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-01 10:17:08,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-01 10:17:08,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-01 10:17:08,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-01 10:17:08,522 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2021-11-01 10:17:08,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-01 10:17:08,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-01 10:17:08,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-01 10:17:08,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-01 10:17:08,812 INFO L275 PluginConnector]: CDTParser initialized [2021-11-01 10:17:08,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-01 10:17:08,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2276792/7cfa7cedd0e0409aa7f709d978ecc4ad/FLAG2d0bd34e3 [2021-11-01 10:17:09,507 INFO L306 CDTParser]: Found 1 translation units. [2021-11-01 10:17:09,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2021-11-01 10:17:09,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2276792/7cfa7cedd0e0409aa7f709d978ecc4ad/FLAG2d0bd34e3 [2021-11-01 10:17:09,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f2276792/7cfa7cedd0e0409aa7f709d978ecc4ad [2021-11-01 10:17:09,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-01 10:17:09,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-01 10:17:09,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-01 10:17:09,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-01 10:17:09,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-01 10:17:09,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 10:17:09" (1/1) ... [2021-11-01 10:17:09,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5904ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:09, skipping insertion in model container [2021-11-01 10:17:09,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 10:17:09" (1/1) ... [2021-11-01 10:17:09,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-01 10:17:10,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-01 10:17:10,266 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-01 10:17:10,272 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-01 10:17:10,288 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-01 10:17:10,293 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-01 10:17:10,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:10,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:10,834 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:10,835 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:10,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:10,853 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:10,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:10,859 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:10,863 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,182 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-01 10:17:11,183 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-01 10:17:11,185 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-01 10:17:11,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-01 10:17:11,192 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-01 10:17:11,193 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-01 10:17:11,194 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-01 10:17:11,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-01 10:17:11,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-01 10:17:11,197 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-01 10:17:11,317 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-01 10:17:11,386 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,393 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,588 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,622 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,623 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,624 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,625 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-01 10:17:11,724 INFO L203 MainTranslator]: Completed pre-run [2021-11-01 10:17:11,741 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2021-11-01 10:17:11,742 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2021-11-01 10:17:11,743 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-01 10:17:11,743 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-01 10:17:11,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,793 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,793 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,794 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,794 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,815 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-01 10:17:11,815 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-01 10:17:11,816 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-01 10:17:11,816 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-01 10:17:11,817 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-01 10:17:11,817 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-01 10:17:11,817 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-01 10:17:11,817 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-01 10:17:11,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-01 10:17:11,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-01 10:17:11,830 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-01 10:17:11,862 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,863 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,926 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,927 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,934 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-01 10:17:11,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-01 10:17:12,252 INFO L208 MainTranslator]: Completed translation [2021-11-01 10:17:12,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12 WrapperNode [2021-11-01 10:17:12,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-01 10:17:12,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-01 10:17:12,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-01 10:17:12,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-01 10:17:12,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-01 10:17:12,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-01 10:17:12,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-01 10:17:12,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-01 10:17:12,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-01 10:17:12,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-01 10:17:12,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-01 10:17:12,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-01 10:17:12,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (1/1) ... [2021-11-01 10:17:12,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-01 10:17:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-01 10:17:12,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-01 10:17:12,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-01 10:17:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-01 10:17:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-01 10:17:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-01 10:17:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-01 10:17:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-01 10:17:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-01 10:17:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-01 10:17:13,053 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !true; [2021-11-01 10:17:13,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-01 10:17:13,064 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-01 10:17:13,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 10:17:13 BoogieIcfgContainer [2021-11-01 10:17:13,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-01 10:17:13,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-01 10:17:13,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-01 10:17:13,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-01 10:17:13,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 10:17:09" (1/3) ... [2021-11-01 10:17:13,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3508a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 10:17:13, skipping insertion in model container [2021-11-01 10:17:13,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 10:17:12" (2/3) ... [2021-11-01 10:17:13,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3508a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 10:17:13, skipping insertion in model container [2021-11-01 10:17:13,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 10:17:13" (3/3) ... [2021-11-01 10:17:13,071 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2021-11-01 10:17:13,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-01 10:17:13,075 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-01 10:17:13,112 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-01 10:17:13,118 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-01 10:17:13,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-01 10:17:13,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 51 states have (on average 1.392156862745098) internal successors, (71), 54 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-01 10:17:13,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:13,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:13,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:13,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1599795525, now seen corresponding path program 1 times [2021-11-01 10:17:13,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 10:17:13,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109390974] [2021-11-01 10:17:13,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:13,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 10:17:13,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 10:17:13,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 10:17:13,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-01 10:17:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:13,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-01 10:17:13,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 10:17:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:13,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 10:17:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:13,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 10:17:13,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109390974] [2021-11-01 10:17:13,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109390974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:13,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:13,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-01 10:17:13,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758862669] [2021-11-01 10:17:13,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-01 10:17:13,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 10:17:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-01 10:17:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-01 10:17:13,621 INFO L87 Difference]: Start difference. First operand has 55 states, 51 states have (on average 1.392156862745098) internal successors, (71), 54 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:13,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:13,745 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2021-11-01 10:17:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-01 10:17:13,747 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-01 10:17:13,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:13,752 INFO L225 Difference]: With dead ends: 106 [2021-11-01 10:17:13,752 INFO L226 Difference]: Without dead ends: 50 [2021-11-01 10:17:13,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.13ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-01 10:17:13,757 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.73ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:13,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 109.73ms Time] [2021-11-01 10:17:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-01 10:17:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-01 10:17:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-11-01 10:17:13,783 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 25 [2021-11-01 10:17:13,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:13,784 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-11-01 10:17:13,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-11-01 10:17:13,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-01 10:17:13,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:13,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:13,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-01 10:17:14,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 10:17:14,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:14,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1892036256, now seen corresponding path program 1 times [2021-11-01 10:17:14,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 10:17:14,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314102361] [2021-11-01 10:17:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:14,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 10:17:14,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 10:17:14,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 10:17:14,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-01 10:17:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:14,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-01 10:17:14,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 10:17:14,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:14,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 10:17:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:14,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 10:17:14,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314102361] [2021-11-01 10:17:14,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314102361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:14,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:14,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 10 [2021-11-01 10:17:14,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445827894] [2021-11-01 10:17:14,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-01 10:17:14,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 10:17:14,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-01 10:17:14,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-01 10:17:14,404 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:14,824 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-11-01 10:17:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-01 10:17:14,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-01 10:17:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:14,825 INFO L225 Difference]: With dead ends: 67 [2021-11-01 10:17:14,826 INFO L226 Difference]: Without dead ends: 50 [2021-11-01 10:17:14,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 173.40ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-01 10:17:14,827 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 163 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.25ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 266.48ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:14,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 0 Invalid, 225 Unknown, 0 Unchecked, 3.25ms Time], IncrementalHoareTripleChecker [11 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 266.48ms Time] [2021-11-01 10:17:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-01 10:17:14,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-01 10:17:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-11-01 10:17:14,832 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 26 [2021-11-01 10:17:14,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:14,832 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-11-01 10:17:14,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-11-01 10:17:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-01 10:17:14,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:14,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:14,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-01 10:17:15,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 10:17:15,044 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:15,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1472602148, now seen corresponding path program 1 times [2021-11-01 10:17:15,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 10:17:15,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286570085] [2021-11-01 10:17:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:15,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 10:17:15,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 10:17:15,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 10:17:15,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-01 10:17:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:15,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-01 10:17:15,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 10:17:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:15,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 10:17:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:15,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 10:17:15,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286570085] [2021-11-01 10:17:15,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286570085] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:15,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:15,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 13 [2021-11-01 10:17:15,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040551112] [2021-11-01 10:17:15,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-01 10:17:15,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 10:17:15,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-01 10:17:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-01 10:17:15,510 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:15,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:15,990 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-11-01 10:17:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-01 10:17:15,990 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-01 10:17:15,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:15,991 INFO L225 Difference]: With dead ends: 50 [2021-11-01 10:17:15,991 INFO L226 Difference]: Without dead ends: 48 [2021-11-01 10:17:15,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 241.12ms TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-11-01 10:17:15,992 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 177 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 250.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 290.67ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:15,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 0 Invalid, 350 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [32 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 290.67ms Time] [2021-11-01 10:17:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-01 10:17:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-01 10:17:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-11-01 10:17:15,996 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 27 [2021-11-01 10:17:15,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:15,996 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-11-01 10:17:15,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:15,997 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-11-01 10:17:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-01 10:17:15,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:15,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:16,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-01 10:17:16,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 10:17:16,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:16,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:16,199 INFO L85 PathProgramCache]: Analyzing trace with hash -788472151, now seen corresponding path program 1 times [2021-11-01 10:17:16,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 10:17:16,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501230127] [2021-11-01 10:17:16,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:16,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 10:17:16,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 10:17:16,209 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 10:17:16,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-01 10:17:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:16,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-01 10:17:16,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 10:17:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:16,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 10:17:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:16,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 10:17:16,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501230127] [2021-11-01 10:17:16,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501230127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:16,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:16,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 12 [2021-11-01 10:17:16,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614677797] [2021-11-01 10:17:16,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-01 10:17:16,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 10:17:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-01 10:17:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-01 10:17:16,696 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:17,202 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-11-01 10:17:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-01 10:17:17,203 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-01 10:17:17,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:17,203 INFO L225 Difference]: With dead ends: 72 [2021-11-01 10:17:17,203 INFO L226 Difference]: Without dead ends: 70 [2021-11-01 10:17:17,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 247.92ms TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2021-11-01 10:17:17,206 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 229 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 319.84ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:17,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 0 Invalid, 326 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [25 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 319.84ms Time] [2021-11-01 10:17:17,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-01 10:17:17,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 46. [2021-11-01 10:17:17,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-11-01 10:17:17,228 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 31 [2021-11-01 10:17:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:17,228 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-11-01 10:17:17,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:17,229 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-11-01 10:17:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-01 10:17:17,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:17,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:17,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-01 10:17:17,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 10:17:17,430 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:17,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:17,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1439752775, now seen corresponding path program 1 times [2021-11-01 10:17:17,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 10:17:17,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305411578] [2021-11-01 10:17:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:17,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 10:17:17,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 10:17:17,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 10:17:17,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-01 10:17:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-01 10:17:17,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-01 10:17:17,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-01 10:17:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:17,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-01 10:17:17,843 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-01 10:17:17,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 15 [2021-11-01 10:17:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-01 10:17:17,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-01 10:17:17,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305411578] [2021-11-01 10:17:17,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305411578] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-01 10:17:17,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-01 10:17:17,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-01 10:17:17,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488072482] [2021-11-01 10:17:17,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-01 10:17:17,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-01 10:17:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-01 10:17:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-01 10:17:17,970 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-01 10:17:18,278 INFO L93 Difference]: Finished difference Result 70 states and 69 transitions. [2021-11-01 10:17:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-01 10:17:18,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-01 10:17:18,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-01 10:17:18,279 INFO L225 Difference]: With dead ends: 70 [2021-11-01 10:17:18,279 INFO L226 Difference]: Without dead ends: 46 [2021-11-01 10:17:18,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.13ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-01 10:17:18,280 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 226.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 262.29ms IncrementalHoareTripleChecker+Time [2021-11-01 10:17:18,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 237 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [8 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 262.29ms Time] [2021-11-01 10:17:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-01 10:17:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-01 10:17:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0) internal successors, (45), 45 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2021-11-01 10:17:18,284 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 36 [2021-11-01 10:17:18,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-01 10:17:18,284 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2021-11-01 10:17:18,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-01 10:17:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2021-11-01 10:17:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-01 10:17:18,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-01 10:17:18,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-01 10:17:18,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-01 10:17:18,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 10:17:18,495 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-01 10:17:18,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-01 10:17:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash -740992344, now seen corresponding path program 1 times [2021-11-01 10:17:18,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-01 10:17:18,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551780939] [2021-11-01 10:17:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-01 10:17:18,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-01 10:17:18,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-01 10:17:18,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-01 10:17:18,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-01 10:17:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-01 10:17:19,099 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-01 10:17:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-01 10:17:19,755 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-01 10:17:19,758 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-01 10:17:19,760 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-01 10:17:19,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-01 10:17:19,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-01 10:17:19,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-01 10:17:19,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-01 10:17:19,990 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-01 10:17:19,992 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-01 10:17:20,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.11 10:17:20 BoogieIcfgContainer [2021-11-01 10:17:20,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-01 10:17:20,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-01 10:17:20,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-01 10:17:20,069 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-01 10:17:20,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 10:17:13" (3/4) ... [2021-11-01 10:17:20,070 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-01 10:17:20,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-01 10:17:20,071 INFO L158 Benchmark]: Toolchain (without parser) took 10158.95ms. Allocated memory was 60.8MB in the beginning and 209.7MB in the end (delta: 148.9MB). Free memory was 30.0MB in the beginning and 109.1MB in the end (delta: -79.1MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. [2021-11-01 10:17:20,071 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.2MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-01 10:17:20,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2340.03ms. Allocated memory was 60.8MB in the beginning and 146.8MB in the end (delta: 86.0MB). Free memory was 29.9MB in the beginning and 74.9MB in the end (delta: -45.0MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2021-11-01 10:17:20,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 202.56ms. Allocated memory is still 146.8MB. Free memory was 74.9MB in the beginning and 63.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-01 10:17:20,072 INFO L158 Benchmark]: Boogie Preprocessor took 58.36ms. Allocated memory is still 146.8MB. Free memory was 63.6MB in the beginning and 58.1MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-01 10:17:20,072 INFO L158 Benchmark]: RCFGBuilder took 550.55ms. Allocated memory is still 146.8MB. Free memory was 58.1MB in the beginning and 56.4MB in the end (delta: 1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-01 10:17:20,072 INFO L158 Benchmark]: TraceAbstraction took 7000.62ms. Allocated memory was 146.8MB in the beginning and 209.7MB in the end (delta: 62.9MB). Free memory was 56.4MB in the beginning and 109.1MB in the end (delta: -52.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-11-01 10:17:20,072 INFO L158 Benchmark]: Witness Printer took 2.17ms. Allocated memory is still 209.7MB. Free memory is still 109.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-01 10:17:20,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 43.2MB in the end (delta: 54.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2340.03ms. Allocated memory was 60.8MB in the beginning and 146.8MB in the end (delta: 86.0MB). Free memory was 29.9MB in the beginning and 74.9MB in the end (delta: -45.0MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 202.56ms. Allocated memory is still 146.8MB. Free memory was 74.9MB in the beginning and 63.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.36ms. Allocated memory is still 146.8MB. Free memory was 63.6MB in the beginning and 58.1MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 550.55ms. Allocated memory is still 146.8MB. Free memory was 58.1MB in the beginning and 56.4MB in the end (delta: 1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7000.62ms. Allocated memory was 146.8MB in the beginning and 209.7MB in the end (delta: 62.9MB). Free memory was 56.4MB in the beginning and 109.1MB in the end (delta: -52.8MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Witness Printer took 2.17ms. Allocated memory is still 209.7MB. Free memory is still 109.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] size_t cap = nondet_uint64_t(); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L6899] return malloc(size); [L6834] const char *str = bounded_malloc(cap); [L6838] str[cap - 1] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L6839] return str; VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L261] return __VERIFIER_nondet_bool(); [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) [L266] return __VERIFIER_nondet_ulong(); [L6832] size_t cap = nondet_uint64_t(); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L6899] return malloc(size); [L6834] const char *str = bounded_malloc(cap); [L6838] str[cap - 1] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L6839] return str; VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L6272] return str && ((((1)) == 0) || ((str))); VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L10797-L10798] _Bool rval = !strcmp(a, b); [L6272] return str && ((((1)) == 0) || ((str))); VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L10799] aws_c_string_is_valid(a) && aws_c_string_is_valid(b) [L6272] return str && ((((1)) == 0) || ((str))); VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L10799] aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L223] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L10799] return rval; VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L223] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L7119] size_t i = nondet_uint64_t(); [L211] COND FALSE !(!cond) VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L7123] a[i] [L7123] b[i] [L223] COND TRUE !cond VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] [L223] reach_error() VAL [s_can_fail_allocator_static={134217739:0}, s_tolower_table={134217743:0}] - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 6879.90ms, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 10.46ms, AutomataDifference: 1890.66ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 6.76ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 588 SdHoareTripleChecker+Valid, 1249.00ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 588 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1046.54ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 650 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1120 IncrementalHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 0 mSDtfsCounter, 1120 mSolverCounterSat, 7.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 720.70ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 45.33ms AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 127.46ms SsaConstructionTime, 1069.71ms SatisfiabilityAnalysisTime, 1316.40ms InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 1013 SizeOfPredicates, 58 NumberOfNonLiveVariables, 1933 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-01 10:17:20,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...