./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_linked_list_end_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 a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:12:53,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:12:53,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:12:53,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:12:53,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:12:53,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:12:53,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:12:53,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:12:53,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:12:53,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:12:53,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:12:53,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:12:53,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:12:53,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:12:53,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:12:53,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:12:53,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:12:53,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:12:53,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:12:53,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:12:53,441 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:12:53,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:12:53,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:12:53,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:12:53,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:12:53,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:12:53,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:12:53,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:12:53,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:12:53,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:12:53,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:12:53,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:12:53,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:12:53,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:12:53,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:12:53,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:12:53,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:12:53,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:12:53,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:12:53,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:12:53,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:12:53,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:12:53,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:12:53,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:12:53,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:12:53,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:12:53,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:12:53,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:12:53,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:12:53,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:12:53,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:12:53,474 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:12:53,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:12:53,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:12:53,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:12:53,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:12:53,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:12:53,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:12:53,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:12:53,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:12:53,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:12:53,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:12:53,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:12:53,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:12:53,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:12:53,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:12:53,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:12:53,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:12:53,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:12:53,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:12:53,477 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:12:53,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:12:53,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:12:53,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2022-07-19 22:12:53,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:12:53,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:12:53,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:12:53,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:12:53,700 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:12:53,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2022-07-19 22:12:53,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e451404f/dbd070b26c4246aa8fb34fb83b67a345/FLAGeaa9487a8 [2022-07-19 22:12:54,244 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:12:54,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2022-07-19 22:12:54,279 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e451404f/dbd070b26c4246aa8fb34fb83b67a345/FLAGeaa9487a8 [2022-07-19 22:12:54,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e451404f/dbd070b26c4246aa8fb34fb83b67a345 [2022-07-19 22:12:54,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:12:54,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:12:54,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:12:54,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:12:54,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:12:54,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:12:54" (1/1) ... [2022-07-19 22:12:54,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c34388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:54, skipping insertion in model container [2022-07-19 22:12:54,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:12:54" (1/1) ... [2022-07-19 22:12:54,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:12:54,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:12:54,737 WARN L230 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_linked_list_end_harness.i[4493,4506] [2022-07-19 22:12:54,743 WARN L230 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_linked_list_end_harness.i[4553,4566] [2022-07-19 22:12:55,143 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,144 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,144 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,144 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,146 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,154 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,154 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,155 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,156 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,157 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,157 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,158 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,158 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:12:55,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:12:55,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:12:55,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:12:55,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:12:55,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:12:55,358 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:12:55,358 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:12:55,358 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:12:55,359 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:12:55,458 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:12:55,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:12:55,503 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:12:55,525 WARN L230 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_linked_list_end_harness.i[4493,4506] [2022-07-19 22:12:55,525 WARN L230 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_linked_list_end_harness.i[4553,4566] [2022-07-19 22:12:55,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,568 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,570 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,571 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,578 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,579 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,579 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,580 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,580 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,581 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,581 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,581 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:12:55,621 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:12:55,621 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:12:55,622 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:12:55,622 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:12:55,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:12:55,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:12:55,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:12:55,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:12:55,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:12:55,625 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:12:55,641 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:12:55,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:12:55,831 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:12:55,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55 WrapperNode [2022-07-19 22:12:55,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:12:55,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:12:55,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:12:55,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:12:55,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,930 INFO L137 Inliner]: procedures = 679, calls = 1040, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 136 [2022-07-19 22:12:55,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:12:55,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:12:55,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:12:55,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:12:55,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:12:55,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:12:55,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:12:55,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:12:55,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (1/1) ... [2022-07-19 22:12:55,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:12:56,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:12:56,021 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) [2022-07-19 22:12:56,027 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 [2022-07-19 22:12:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:12:56,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 22:12:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 22:12:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-07-19 22:12:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-07-19 22:12:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:12:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-07-19 22:12:56,054 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-07-19 22:12:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:12:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:12:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:12:56,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:12:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 22:12:56,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 22:12:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:12:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:12:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:12:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 22:12:56,056 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 22:12:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:12:56,226 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:12:56,228 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:12:56,445 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:12:56,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:12:56,450 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 22:12:56,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:12:56 BoogieIcfgContainer [2022-07-19 22:12:56,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:12:56,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:12:56,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:12:56,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:12:56,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:12:54" (1/3) ... [2022-07-19 22:12:56,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426a5243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:12:56, skipping insertion in model container [2022-07-19 22:12:56,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:12:55" (2/3) ... [2022-07-19 22:12:56,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426a5243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:12:56, skipping insertion in model container [2022-07-19 22:12:56,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:12:56" (3/3) ... [2022-07-19 22:12:56,462 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_end_harness.i [2022-07-19 22:12:56,472 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:12:56,472 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:12:56,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:12:56,520 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@46f7c27e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f841fd1 [2022-07-19 22:12:56,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:12:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-19 22:12:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 22:12:56,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:12:56,531 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:12:56,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:12:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:12:56,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2107862704, now seen corresponding path program 1 times [2022-07-19 22:12:56,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:12:56,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652139601] [2022-07-19 22:12:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:12:56,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:12:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:56,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:12:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:12:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:12:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:12:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:56,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:12:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:12:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:12:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 22:12:56,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:12:56,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652139601] [2022-07-19 22:12:56,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652139601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:12:56,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:12:56,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 22:12:56,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402607024] [2022-07-19 22:12:56,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:12:56,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 22:12:56,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:12:56,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 22:12:56,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 22:12:56,880 INFO L87 Difference]: Start difference. First operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:12:56,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:12:56,910 INFO L93 Difference]: Finished difference Result 128 states and 184 transitions. [2022-07-19 22:12:56,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 22:12:56,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-19 22:12:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:12:56,919 INFO L225 Difference]: With dead ends: 128 [2022-07-19 22:12:56,919 INFO L226 Difference]: Without dead ends: 63 [2022-07-19 22:12:56,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 22:12:56,929 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:12:56,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:12:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-19 22:12:56,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-07-19 22:12:56,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-19 22:12:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2022-07-19 22:12:56,970 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 68 [2022-07-19 22:12:56,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:12:56,970 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2022-07-19 22:12:56,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:12:56,970 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2022-07-19 22:12:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 22:12:56,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:12:56,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:12:56,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:12:56,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:12:56,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:12:56,979 INFO L85 PathProgramCache]: Analyzing trace with hash 900796622, now seen corresponding path program 1 times [2022-07-19 22:12:56,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:12:56,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382057170] [2022-07-19 22:12:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:12:56,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:12:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:57,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:12:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:57,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:12:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:57,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:12:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:12:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:12:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:12:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:12:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 22:12:57,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:12:57,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382057170] [2022-07-19 22:12:57,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382057170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:12:57,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285544160] [2022-07-19 22:12:57,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:12:57,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:12:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:12:57,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:12:57,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 22:12:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:57,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-19 22:12:57,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:12:57,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:12:57,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 22:12:57,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:12:57,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-19 22:12:57,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:12:57,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:12:57,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:12:57,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-07-19 22:12:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:12:57,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:12:57,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:12:57,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-19 22:12:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 22:12:57,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:12:57,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285544160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:12:57,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:12:57,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2022-07-19 22:12:57,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055203228] [2022-07-19 22:12:57,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:12:57,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:12:57,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:12:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:12:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:12:57,823 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 22:12:57,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:12:57,919 INFO L93 Difference]: Finished difference Result 144 states and 195 transitions. [2022-07-19 22:12:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:12:57,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2022-07-19 22:12:57,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:12:57,921 INFO L225 Difference]: With dead ends: 144 [2022-07-19 22:12:57,921 INFO L226 Difference]: Without dead ends: 93 [2022-07-19 22:12:57,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:12:57,923 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 32 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:12:57,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 276 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-07-19 22:12:57,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-19 22:12:57,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2022-07-19 22:12:57,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 60 states have internal predecessors, (77), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-19 22:12:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 105 transitions. [2022-07-19 22:12:57,931 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 105 transitions. Word has length 68 [2022-07-19 22:12:57,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:12:57,931 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 105 transitions. [2022-07-19 22:12:57,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 22:12:57,932 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 105 transitions. [2022-07-19 22:12:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 22:12:57,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:12:57,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:12:57,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 22:12:58,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:12:58,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:12:58,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:12:58,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1148591220, now seen corresponding path program 1 times [2022-07-19 22:12:58,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:12:58,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398029509] [2022-07-19 22:12:58,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:12:58,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:12:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:58,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:12:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:58,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:12:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:12:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:12:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:12:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:12:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:58,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:12:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 22:12:58,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:12:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398029509] [2022-07-19 22:12:58,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398029509] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:12:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440071467] [2022-07-19 22:12:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:12:58,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:12:58,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:12:58,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:12:58,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 22:12:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:12:58,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-19 22:12:58,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:12:58,485 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:12:58,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-19 22:12:58,495 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:12:58,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-19 22:12:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 22:12:59,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:12:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 22:12:59,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440071467] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:12:59,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:12:59,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 12] total 28 [2022-07-19 22:12:59,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653974031] [2022-07-19 22:12:59,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:12:59,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 22:12:59,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:12:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 22:12:59,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-07-19 22:12:59,597 INFO L87 Difference]: Start difference. First operand 79 states and 105 transitions. Second operand has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-19 22:13:01,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:13:01,066 INFO L93 Difference]: Finished difference Result 246 states and 404 transitions. [2022-07-19 22:13:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-19 22:13:01,066 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 68 [2022-07-19 22:13:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:13:01,070 INFO L225 Difference]: With dead ends: 246 [2022-07-19 22:13:01,071 INFO L226 Difference]: Without dead ends: 192 [2022-07-19 22:13:01,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 127 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=439, Invalid=3221, Unknown=0, NotChecked=0, Total=3660 [2022-07-19 22:13:01,073 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 255 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:13:01,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1560 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1087 Invalid, 0 Unknown, 373 Unchecked, 0.7s Time] [2022-07-19 22:13:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-19 22:13:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 139. [2022-07-19 22:13:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.375) internal successors, (143), 110 states have internal predecessors, (143), 22 states have call successors, (22), 8 states have call predecessors, (22), 12 states have return successors, (43), 20 states have call predecessors, (43), 21 states have call successors, (43) [2022-07-19 22:13:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 208 transitions. [2022-07-19 22:13:01,093 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 208 transitions. Word has length 68 [2022-07-19 22:13:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:13:01,093 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 208 transitions. [2022-07-19 22:13:01,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-19 22:13:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 208 transitions. [2022-07-19 22:13:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 22:13:01,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:13:01,096 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:13:01,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 22:13:01,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 22:13:01,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:13:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:13:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash 577933322, now seen corresponding path program 1 times [2022-07-19 22:13:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:13:01,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239464578] [2022-07-19 22:13:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:13:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:13:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:13:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:01,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:13:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:13:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:13:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:13:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:13:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 22:13:01,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:13:01,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239464578] [2022-07-19 22:13:01,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239464578] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:13:01,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908616458] [2022-07-19 22:13:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:01,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:01,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:13:01,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:13:01,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 22:13:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:01,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 22:13:01,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:13:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 22:13:01,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:13:01,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908616458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:13:01,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:13:01,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-19 22:13:01,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747712246] [2022-07-19 22:13:01,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:13:01,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:13:01,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:13:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:13:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:13:01,671 INFO L87 Difference]: Start difference. First operand 139 states and 208 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:13:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:13:01,797 INFO L93 Difference]: Finished difference Result 259 states and 395 transitions. [2022-07-19 22:13:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:13:01,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-19 22:13:01,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:13:01,802 INFO L225 Difference]: With dead ends: 259 [2022-07-19 22:13:01,802 INFO L226 Difference]: Without dead ends: 150 [2022-07-19 22:13:01,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:13:01,804 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 105 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:13:01,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 239 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:13:01,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-19 22:13:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2022-07-19 22:13:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 108 states have (on average 1.3611111111111112) internal successors, (147), 116 states have internal predecessors, (147), 22 states have call successors, (22), 8 states have call predecessors, (22), 14 states have return successors, (49), 20 states have call predecessors, (49), 21 states have call successors, (49) [2022-07-19 22:13:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 218 transitions. [2022-07-19 22:13:01,837 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 218 transitions. Word has length 70 [2022-07-19 22:13:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:13:01,838 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 218 transitions. [2022-07-19 22:13:01,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:13:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 218 transitions. [2022-07-19 22:13:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 22:13:01,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:13:01,844 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:13:01,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 22:13:02,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:02,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:13:02,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:13:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash -34807881, now seen corresponding path program 1 times [2022-07-19 22:13:02,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:13:02,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468466529] [2022-07-19 22:13:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:02,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:13:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:13:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:13:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:13:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:13:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:13:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:13:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:13:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 22:13:02,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:13:02,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468466529] [2022-07-19 22:13:02,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468466529] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:13:02,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696059892] [2022-07-19 22:13:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:02,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:02,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:13:02,157 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:13:02,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 22:13:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 22:13:02,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:13:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 22:13:02,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:13:02,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696059892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:13:02,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:13:02,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-19 22:13:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119443319] [2022-07-19 22:13:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:13:02,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:13:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:13:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:13:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:13:02,343 INFO L87 Difference]: Start difference. First operand 145 states and 218 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:13:02,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:13:02,531 INFO L93 Difference]: Finished difference Result 299 states and 464 transitions. [2022-07-19 22:13:02,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:13:02,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-19 22:13:02,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:13:02,533 INFO L225 Difference]: With dead ends: 299 [2022-07-19 22:13:02,533 INFO L226 Difference]: Without dead ends: 184 [2022-07-19 22:13:02,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-07-19 22:13:02,534 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 142 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:13:02,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 279 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:13:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-19 22:13:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 149. [2022-07-19 22:13:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 112 states have (on average 1.3660714285714286) internal successors, (153), 120 states have internal predecessors, (153), 22 states have call successors, (22), 8 states have call predecessors, (22), 14 states have return successors, (49), 20 states have call predecessors, (49), 21 states have call successors, (49) [2022-07-19 22:13:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2022-07-19 22:13:02,545 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 72 [2022-07-19 22:13:02,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:13:02,546 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2022-07-19 22:13:02,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:13:02,546 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2022-07-19 22:13:02,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 22:13:02,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:13:02,547 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:13:02,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 22:13:02,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:02,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:13:02,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:13:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash 387052583, now seen corresponding path program 1 times [2022-07-19 22:13:02,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:13:02,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696535495] [2022-07-19 22:13:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:02,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:13:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:13:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:13:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:13:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:13:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 22:13:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:13:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:13:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 22:13:02,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:13:02,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696535495] [2022-07-19 22:13:02,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696535495] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:13:02,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865887537] [2022-07-19 22:13:02,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:02,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:02,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:13:02,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:13:02,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 22:13:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:02,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 22:13:02,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:13:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 22:13:02,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:13:02,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865887537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:13:02,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:13:02,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-19 22:13:02,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656252220] [2022-07-19 22:13:02,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:13:02,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:13:02,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:13:02,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:13:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:13:02,986 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:13:03,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:13:03,003 INFO L93 Difference]: Finished difference Result 294 states and 468 transitions. [2022-07-19 22:13:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:13:03,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-07-19 22:13:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:13:03,005 INFO L225 Difference]: With dead ends: 294 [2022-07-19 22:13:03,005 INFO L226 Difference]: Without dead ends: 175 [2022-07-19 22:13:03,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:13:03,006 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:13:03,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:13:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-19 22:13:03,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 151. [2022-07-19 22:13:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 114 states have (on average 1.3508771929824561) internal successors, (154), 122 states have internal predecessors, (154), 22 states have call successors, (22), 8 states have call predecessors, (22), 14 states have return successors, (49), 20 states have call predecessors, (49), 21 states have call successors, (49) [2022-07-19 22:13:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 225 transitions. [2022-07-19 22:13:03,016 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 225 transitions. Word has length 73 [2022-07-19 22:13:03,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:13:03,017 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 225 transitions. [2022-07-19 22:13:03,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:13:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 225 transitions. [2022-07-19 22:13:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 22:13:03,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:13:03,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:13:03,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 22:13:03,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:03,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:13:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:13:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash -186702901, now seen corresponding path program 1 times [2022-07-19 22:13:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:13:03,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97345043] [2022-07-19 22:13:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:03,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:13:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:13:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:13:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:13:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:13:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 22:13:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 22:13:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:13:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:13:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 22:13:03,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:13:03,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97345043] [2022-07-19 22:13:03,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97345043] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:13:03,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616385759] [2022-07-19 22:13:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:03,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:03,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:13:03,366 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:13:03,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 22:13:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:03,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-19 22:13:03,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:13:03,548 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:13:03,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-19 22:13:03,559 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:13:03,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-19 22:13:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 27 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 22:13:04,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:13:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 22:13:04,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616385759] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:13:04,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:13:04,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 10] total 27 [2022-07-19 22:13:04,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169536870] [2022-07-19 22:13:04,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:13:04,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-19 22:13:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:13:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-19 22:13:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-07-19 22:13:04,740 INFO L87 Difference]: Start difference. First operand 151 states and 225 transitions. Second operand has 27 states, 26 states have (on average 4.653846153846154) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-07-19 22:13:05,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:13:05,431 INFO L93 Difference]: Finished difference Result 342 states and 517 transitions. [2022-07-19 22:13:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 22:13:05,432 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.653846153846154) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 83 [2022-07-19 22:13:05,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:13:05,433 INFO L225 Difference]: With dead ends: 342 [2022-07-19 22:13:05,434 INFO L226 Difference]: Without dead ends: 221 [2022-07-19 22:13:05,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 161 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=1826, Unknown=0, NotChecked=0, Total=2070 [2022-07-19 22:13:05,435 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 100 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:13:05,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1337 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 608 Invalid, 0 Unknown, 116 Unchecked, 0.3s Time] [2022-07-19 22:13:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-19 22:13:05,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 175. [2022-07-19 22:13:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 134 states have (on average 1.3507462686567164) internal successors, (181), 144 states have internal predecessors, (181), 22 states have call successors, (22), 10 states have call predecessors, (22), 18 states have return successors, (54), 20 states have call predecessors, (54), 21 states have call successors, (54) [2022-07-19 22:13:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 257 transitions. [2022-07-19 22:13:05,448 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 257 transitions. Word has length 83 [2022-07-19 22:13:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:13:05,448 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 257 transitions. [2022-07-19 22:13:05,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.653846153846154) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-07-19 22:13:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 257 transitions. [2022-07-19 22:13:05,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-19 22:13:05,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:13:05,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:13:05,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 22:13:05,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:05,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:13:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:13:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1220157194, now seen corresponding path program 1 times [2022-07-19 22:13:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:13:05,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470039651] [2022-07-19 22:13:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:05,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:13:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:13:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:13:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:13:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:13:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:13:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:13:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 22:13:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:13:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 22:13:05,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:13:05,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470039651] [2022-07-19 22:13:05,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470039651] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:13:05,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554134140] [2022-07-19 22:13:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:05,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:05,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:13:05,795 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:13:05,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 22:13:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:05,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-19 22:13:05,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:13:05,971 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:13:05,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-19 22:13:05,981 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:13:05,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-19 22:13:06,821 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) 0))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) 0)))) is different from true [2022-07-19 22:13:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 22:13:06,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:13:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 22:13:07,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554134140] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:13:07,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:13:07,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 8] total 18 [2022-07-19 22:13:07,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669631289] [2022-07-19 22:13:07,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:13:07,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 22:13:07,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:13:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 22:13:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2022-07-19 22:13:07,019 INFO L87 Difference]: Start difference. First operand 175 states and 257 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-19 22:13:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:13:07,436 INFO L93 Difference]: Finished difference Result 572 states and 935 transitions. [2022-07-19 22:13:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 22:13:07,436 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 85 [2022-07-19 22:13:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:13:07,439 INFO L225 Difference]: With dead ends: 572 [2022-07-19 22:13:07,439 INFO L226 Difference]: Without dead ends: 431 [2022-07-19 22:13:07,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=445, Unknown=1, NotChecked=44, Total=600 [2022-07-19 22:13:07,440 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 201 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:13:07,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 642 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 492 Invalid, 0 Unknown, 174 Unchecked, 0.3s Time] [2022-07-19 22:13:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-07-19 22:13:07,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 230. [2022-07-19 22:13:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 185 states have (on average 1.3837837837837839) internal successors, (256), 195 states have internal predecessors, (256), 25 states have call successors, (25), 11 states have call predecessors, (25), 19 states have return successors, (60), 23 states have call predecessors, (60), 24 states have call successors, (60) [2022-07-19 22:13:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 341 transitions. [2022-07-19 22:13:07,459 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 341 transitions. Word has length 85 [2022-07-19 22:13:07,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:13:07,459 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 341 transitions. [2022-07-19 22:13:07,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-19 22:13:07,459 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 341 transitions. [2022-07-19 22:13:07,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 22:13:07,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:13:07,460 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:13:07,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 22:13:07,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:07,679 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:13:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:13:07,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1281472374, now seen corresponding path program 1 times [2022-07-19 22:13:07,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:13:07,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791261970] [2022-07-19 22:13:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:07,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:13:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:13:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:13:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:13:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:13:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 22:13:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 22:13:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:13:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:13:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 22:13:07,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:13:07,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791261970] [2022-07-19 22:13:07,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791261970] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:13:07,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279704698] [2022-07-19 22:13:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:07,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:07,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:13:07,742 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:13:07,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 22:13:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:07,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:13:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:13:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 22:13:07,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:13:07,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279704698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:13:07,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:13:07,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-19 22:13:07,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860982024] [2022-07-19 22:13:07,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:13:07,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:13:07,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:13:07,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:13:07,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:13:07,875 INFO L87 Difference]: Start difference. First operand 230 states and 341 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 22:13:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:13:07,897 INFO L93 Difference]: Finished difference Result 410 states and 647 transitions. [2022-07-19 22:13:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:13:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-07-19 22:13:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:13:07,899 INFO L225 Difference]: With dead ends: 410 [2022-07-19 22:13:07,899 INFO L226 Difference]: Without dead ends: 218 [2022-07-19 22:13:07,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:13:07,901 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 8 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:13:07,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 244 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:13:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-19 22:13:07,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2022-07-19 22:13:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 170 states have (on average 1.3470588235294119) internal successors, (229), 180 states have internal predecessors, (229), 25 states have call successors, (25), 11 states have call predecessors, (25), 19 states have return successors, (60), 23 states have call predecessors, (60), 24 states have call successors, (60) [2022-07-19 22:13:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 314 transitions. [2022-07-19 22:13:07,911 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 314 transitions. Word has length 83 [2022-07-19 22:13:07,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:13:07,912 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 314 transitions. [2022-07-19 22:13:07,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 22:13:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 314 transitions. [2022-07-19 22:13:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 22:13:07,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:13:07,913 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:13:07,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 22:13:08,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 22:13:08,131 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:13:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:13:08,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1051920264, now seen corresponding path program 1 times [2022-07-19 22:13:08,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:13:08,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549065436] [2022-07-19 22:13:08,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:08,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:13:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:13:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:13:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:13:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:13:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 22:13:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 22:13:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:13:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:13:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 22:13:08,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:13:08,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549065436] [2022-07-19 22:13:08,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549065436] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:13:08,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461677818] [2022-07-19 22:13:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:08,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:13:08,328 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:13:08,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 22:13:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:13:08,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:13:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 22:13:08,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:13:08,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461677818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:13:08,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:13:08,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-19 22:13:08,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729759482] [2022-07-19 22:13:08,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:13:08,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:13:08,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:13:08,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:13:08,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:13:08,485 INFO L87 Difference]: Start difference. First operand 215 states and 314 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 22:13:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:13:08,503 INFO L93 Difference]: Finished difference Result 323 states and 488 transitions. [2022-07-19 22:13:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:13:08,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-07-19 22:13:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:13:08,504 INFO L225 Difference]: With dead ends: 323 [2022-07-19 22:13:08,504 INFO L226 Difference]: Without dead ends: 136 [2022-07-19 22:13:08,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:13:08,505 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 2 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:13:08,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 235 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:13:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-07-19 22:13:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 129. [2022-07-19 22:13:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 104 states have internal predecessors, (121), 17 states have call successors, (17), 9 states have call predecessors, (17), 13 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) [2022-07-19 22:13:08,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2022-07-19 22:13:08,513 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 83 [2022-07-19 22:13:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:13:08,513 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2022-07-19 22:13:08,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 22:13:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2022-07-19 22:13:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 22:13:08,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:13:08,515 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:13:08,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 22:13:08,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 22:13:08,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:13:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:13:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash 806524548, now seen corresponding path program 1 times [2022-07-19 22:13:08,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:13:08,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091652052] [2022-07-19 22:13:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:08,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:13:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:13:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:13:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:13:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:13:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:13:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:13:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 22:13:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:13:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 22:13:08,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:13:08,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091652052] [2022-07-19 22:13:08,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091652052] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:13:08,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686234576] [2022-07-19 22:13:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:13:08,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:13:08,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:13:08,830 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:13:08,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 22:13:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:13:08,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-19 22:13:08,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:13:09,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-19 22:13:09,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:13:09,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-19 22:13:09,088 INFO L356 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2022-07-19 22:13:09,089 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-19 22:13:09,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 22:13:09,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 22:13:09,290 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 44 context size 44 output size 44 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 22:13:09,292 INFO L158 Benchmark]: Toolchain (without parser) took 14787.13ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 101.6MB in the beginning and 179.5MB in the end (delta: -77.9MB). Peak memory consumption was 106.8MB. Max. memory is 16.1GB. [2022-07-19 22:13:09,293 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:13:09,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1323.84ms. Allocated memory was 142.6MB in the beginning and 224.4MB in the end (delta: 81.8MB). Free memory was 101.3MB in the beginning and 139.9MB in the end (delta: -38.6MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. [2022-07-19 22:13:09,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.34ms. Allocated memory is still 224.4MB. Free memory was 139.9MB in the beginning and 134.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-19 22:13:09,293 INFO L158 Benchmark]: Boogie Preprocessor took 59.58ms. Allocated memory is still 224.4MB. Free memory was 134.6MB in the beginning and 131.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 22:13:09,293 INFO L158 Benchmark]: RCFGBuilder took 460.54ms. Allocated memory is still 224.4MB. Free memory was 131.5MB in the beginning and 111.6MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-19 22:13:09,294 INFO L158 Benchmark]: TraceAbstraction took 12839.75ms. Allocated memory was 224.4MB in the beginning and 327.2MB in the end (delta: 102.8MB). Free memory was 110.5MB in the beginning and 179.5MB in the end (delta: -68.9MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-07-19 22:13:09,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1323.84ms. Allocated memory was 142.6MB in the beginning and 224.4MB in the end (delta: 81.8MB). Free memory was 101.3MB in the beginning and 139.9MB in the end (delta: -38.6MB). Peak memory consumption was 74.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.34ms. Allocated memory is still 224.4MB. Free memory was 139.9MB in the beginning and 134.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.58ms. Allocated memory is still 224.4MB. Free memory was 134.6MB in the beginning and 131.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 460.54ms. Allocated memory is still 224.4MB. Free memory was 131.5MB in the beginning and 111.6MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12839.75ms. Allocated memory was 224.4MB in the beginning and 327.2MB in the end (delta: 102.8MB). Free memory was 110.5MB in the beginning and 179.5MB in the end (delta: -68.9MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 44 context size 44 output size 44 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 44 context size 44 output size 44: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-19 22:13:09,319 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_linked_list_end_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 a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:13:10,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:13:10,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:13:10,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:13:10,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:13:10,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:13:10,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:13:10,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:13:10,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:13:10,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:13:10,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:13:10,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:13:10,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:13:10,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:13:10,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:13:10,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:13:10,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:13:10,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:13:10,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:13:10,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:13:10,996 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:13:10,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:13:11,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:13:11,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:13:11,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:13:11,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:13:11,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:13:11,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:13:11,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:13:11,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:13:11,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:13:11,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:13:11,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:13:11,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:13:11,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:13:11,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:13:11,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:13:11,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:13:11,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:13:11,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:13:11,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:13:11,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:13:11,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-19 22:13:11,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:13:11,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:13:11,037 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:13:11,037 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:13:11,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:13:11,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:13:11,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:13:11,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:13:11,039 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:13:11,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:13:11,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:13:11,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:13:11,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:13:11,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:13:11,048 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 22:13:11,048 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 22:13:11,048 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 22:13:11,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:13:11,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:13:11,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:13:11,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:13:11,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:13:11,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:13:11,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:13:11,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:13:11,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:13:11,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:13:11,050 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 22:13:11,050 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 22:13:11,050 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:13:11,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:13:11,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:13:11,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 22:13:11,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2022-07-19 22:13:11,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:13:11,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:13:11,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:13:11,293 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:13:11,293 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:13:11,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2022-07-19 22:13:11,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f37f150/cdd016a22c19492b8df44c85b21bbcd6/FLAG97a619278 [2022-07-19 22:13:11,892 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:13:11,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2022-07-19 22:13:11,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f37f150/cdd016a22c19492b8df44c85b21bbcd6/FLAG97a619278 [2022-07-19 22:13:12,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75f37f150/cdd016a22c19492b8df44c85b21bbcd6 [2022-07-19 22:13:12,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:13:12,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:13:12,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:13:12,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:13:12,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:13:12,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:13:12" (1/1) ... [2022-07-19 22:13:12,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e441b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:13:12, skipping insertion in model container [2022-07-19 22:13:12,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:13:12" (1/1) ... [2022-07-19 22:13:12,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:13:12,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:13:12,425 WARN L230 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_linked_list_end_harness.i[4493,4506] [2022-07-19 22:13:12,430 WARN L230 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_linked_list_end_harness.i[4553,4566] [2022-07-19 22:13:12,876 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,876 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,877 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,877 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,878 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,885 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,885 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,886 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,887 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,888 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,889 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,890 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:12,891 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:13:13,057 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:13:13,058 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:13:13,058 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:13:13,059 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:13:13,060 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:13:13,060 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:13:13,061 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:13:13,061 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:13:13,061 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:13:13,062 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:13:13,139 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:13:13,149 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArithmeticException: BigInteger out of int range at java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1009) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2978) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2836) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2138) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 22:13:13,152 INFO L158 Benchmark]: Toolchain (without parser) took 993.42ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 32.8MB in the beginning and 51.4MB in the end (delta: -18.6MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2022-07-19 22:13:13,156 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:13:13,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 992.01ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 32.7MB in the beginning and 51.4MB in the end (delta: -18.7MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2022-07-19 22:13:13,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 60.8MB. Free memory was 42.9MB in the beginning and 42.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 992.01ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 32.7MB in the beginning and 51.4MB in the end (delta: -18.7MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArithmeticException: BigInteger out of int range: java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range