./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_pop_back_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 bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:10:24,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:10:24,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:10:24,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:10:24,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:10:24,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:10:24,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:10:24,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:10:24,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:10:24,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:10:24,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:10:24,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:10:24,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:10:24,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:10:24,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:10:24,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:10:24,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:10:24,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:10:24,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:10:24,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:10:24,508 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:10:24,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:10:24,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:10:24,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:10:24,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:10:24,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:10:24,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:10:24,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:10:24,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:10:24,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:10:24,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:10:24,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:10:24,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:10:24,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:10:24,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:10:24,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:10:24,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:10:24,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:10:24,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:10:24,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:10:24,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:10:24,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:10:24,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:10:24,549 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:10:24,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:10:24,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:10:24,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:10:24,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:10:24,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:10:24,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:10:24,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:10:24,552 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:10:24,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:10:24,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:10:24,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:10:24,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:10:24,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:10:24,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:10:24,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:10:24,553 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:10:24,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:10:24,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:10:24,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:10:24,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:10:24,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:10:24,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:10:24,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:10:24,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:10:24,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:10:24,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:10:24,556 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:10:24,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:10:24,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:10:24,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 [2022-07-12 11:10:24,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:10:24,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:10:24,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:10:24,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:10:24,797 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:10:24,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2022-07-12 11:10:24,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57173767/a7a1c62bb9654652b8f60cc975ace76a/FLAG784d7b2a5 [2022-07-12 11:10:25,517 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:10:25,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2022-07-12 11:10:25,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57173767/a7a1c62bb9654652b8f60cc975ace76a/FLAG784d7b2a5 [2022-07-12 11:10:25,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b57173767/a7a1c62bb9654652b8f60cc975ace76a [2022-07-12 11:10:25,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:10:25,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:10:25,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:10:25,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:10:25,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:10:25,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:10:25" (1/1) ... [2022-07-12 11:10:25,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46d2b653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:25, skipping insertion in model container [2022-07-12 11:10:25,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:10:25" (1/1) ... [2022-07-12 11:10:25,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:10:25,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:10:26,091 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_pop_back_harness.i[4498,4511] [2022-07-12 11:10:26,094 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_pop_back_harness.i[4558,4571] [2022-07-12 11:10:26,528 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,529 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,529 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,529 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,530 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,538 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,538 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,539 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,539 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,540 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,541 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,541 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,541 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,721 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:10:26,722 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:10:26,724 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:10:26,725 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:10:26,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:10:26,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:10:26,726 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:10:26,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:10:26,727 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:10:26,728 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:10:26,803 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:10:26,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:10:26,826 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:10:26,837 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_pop_back_harness.i[4498,4511] [2022-07-12 11:10:26,837 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_pop_back_harness.i[4558,4571] [2022-07-12 11:10:26,878 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,878 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,878 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,879 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,879 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,893 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,894 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,894 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,894 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,895 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,895 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,896 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,896 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:26,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:10:26,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:10:26,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:10:26,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:10:26,949 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:10:26,949 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:10:26,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:10:26,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:10:26,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:10:26,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:10:26,962 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:10:26,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:10:27,168 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:10:27,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27 WrapperNode [2022-07-12 11:10:27,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:10:27,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:10:27,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:10:27,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:10:27,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,269 INFO L137 Inliner]: procedures = 679, calls = 1046, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 225 [2022-07-12 11:10:27,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:10:27,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:10:27,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:10:27,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:10:27,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:10:27,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:10:27,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:10:27,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:10:27,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (1/1) ... [2022-07-12 11:10:27,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:10:27,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:10:27,386 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) [2022-07-12 11:10:27,406 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 [2022-07-12 11:10:27,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-12 11:10:27,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-12 11:10:27,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2022-07-12 11:10:27,434 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2022-07-12 11:10:27,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:10:27,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:10:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:10:27,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:10:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-07-12 11:10:27,436 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-07-12 11:10:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:10:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-07-12 11:10:27,436 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-07-12 11:10:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:10:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:10:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:10:27,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:10:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-07-12 11:10:27,437 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-07-12 11:10:27,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 11:10:27,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 11:10:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:10:27,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:10:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:10:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:10:27,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:10:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 11:10:27,439 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 11:10:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-07-12 11:10:27,439 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-07-12 11:10:27,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:10:27,681 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:10:27,683 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:10:27,968 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:10:27,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:10:27,973 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 11:10:27,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:10:27 BoogieIcfgContainer [2022-07-12 11:10:27,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:10:27,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:10:27,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:10:27,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:10:27,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:10:25" (1/3) ... [2022-07-12 11:10:27,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9d601a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:10:27, skipping insertion in model container [2022-07-12 11:10:27,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:27" (2/3) ... [2022-07-12 11:10:27,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9d601a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:10:27, skipping insertion in model container [2022-07-12 11:10:27,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:10:27" (3/3) ... [2022-07-12 11:10:27,980 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2022-07-12 11:10:27,989 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:10:27,989 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:10:28,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:10:28,024 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@3a77bb61, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@22de2317 [2022-07-12 11:10:28,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:10:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-12 11:10:28,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 11:10:28,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:10:28,036 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:10:28,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:10:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:10:28,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1579343520, now seen corresponding path program 1 times [2022-07-12 11:10:28,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:10:28,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302817125] [2022-07-12 11:10:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:28,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:10:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:10:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:10:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:10:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:10:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:10:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:10:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 11:10:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:10:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:10:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:10:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:10:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 11:10:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:10:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-12 11:10:28,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:10:28,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302817125] [2022-07-12 11:10:28,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302817125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:10:28,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707437749] [2022-07-12 11:10:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:28,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:28,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:10:28,529 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) [2022-07-12 11:10:28,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:10:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:28,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:10:28,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:10:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 11:10:28,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:10:28,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707437749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:10:28,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:10:28,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-12 11:10:28,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897417977] [2022-07-12 11:10:28,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:10:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:10:28,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:10:28,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:10:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:10:28,821 INFO L87 Difference]: Start difference. First operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:10:28,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:10:28,869 INFO L93 Difference]: Finished difference Result 274 states and 414 transitions. [2022-07-12 11:10:28,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:10:28,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2022-07-12 11:10:28,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:10:28,877 INFO L225 Difference]: With dead ends: 274 [2022-07-12 11:10:28,877 INFO L226 Difference]: Without dead ends: 140 [2022-07-12 11:10:28,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:10:28,882 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 12 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:10:28,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 536 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:10:28,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-12 11:10:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2022-07-12 11:10:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.244186046511628) internal successors, (107), 87 states have internal predecessors, (107), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-12 11:10:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 180 transitions. [2022-07-12 11:10:28,915 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 180 transitions. Word has length 116 [2022-07-12 11:10:28,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:10:28,916 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 180 transitions. [2022-07-12 11:10:28,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:10:28,916 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 180 transitions. [2022-07-12 11:10:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 11:10:28,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:10:28,918 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:10:28,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 11:10:29,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 11:10:29,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:10:29,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:10:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash -183799078, now seen corresponding path program 1 times [2022-07-12 11:10:29,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:10:29,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142935529] [2022-07-12 11:10:29,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:29,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:10:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:10:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:10:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:10:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:10:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:10:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:10:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 11:10:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:10:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:10:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:10:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:10:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 11:10:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:10:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-12 11:10:29,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:10:29,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142935529] [2022-07-12 11:10:29,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142935529] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:10:29,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413609360] [2022-07-12 11:10:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:29,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:29,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:10:29,391 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) [2022-07-12 11:10:29,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:10:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:29,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:10:29,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:10:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-12 11:10:29,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:10:29,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413609360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:10:29,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:10:29,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-12 11:10:29,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943784214] [2022-07-12 11:10:29,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:10:29,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:10:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:10:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:10:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:10:29,587 INFO L87 Difference]: Start difference. First operand 134 states and 180 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:10:29,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:10:29,614 INFO L93 Difference]: Finished difference Result 252 states and 345 transitions. [2022-07-12 11:10:29,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:10:29,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2022-07-12 11:10:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:10:29,617 INFO L225 Difference]: With dead ends: 252 [2022-07-12 11:10:29,617 INFO L226 Difference]: Without dead ends: 138 [2022-07-12 11:10:29,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:10:29,619 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 3 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:10:29,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 520 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:10:29,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-07-12 11:10:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2022-07-12 11:10:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 90 states have internal predecessors, (110), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-12 11:10:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 183 transitions. [2022-07-12 11:10:29,632 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 183 transitions. Word has length 116 [2022-07-12 11:10:29,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:10:29,633 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 183 transitions. [2022-07-12 11:10:29,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 11:10:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 183 transitions. [2022-07-12 11:10:29,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 11:10:29,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:10:29,638 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:10:29,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:10:29,855 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,SelfDestructingSolverStorable1 [2022-07-12 11:10:29,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:10:29,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:10:29,856 INFO L85 PathProgramCache]: Analyzing trace with hash -543175276, now seen corresponding path program 1 times [2022-07-12 11:10:29,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:10:29,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682897452] [2022-07-12 11:10:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:29,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:10:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:10:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:10:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:10:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:10:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:10:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:10:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 11:10:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:10:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:10:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:10:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:10:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 11:10:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:10:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-12 11:10:30,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:10:30,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682897452] [2022-07-12 11:10:30,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682897452] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:10:30,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528596295] [2022-07-12 11:10:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:30,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:10:30,165 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) [2022-07-12 11:10:30,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:10:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:30,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-12 11:10:30,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:10:30,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:10:30,413 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 [2022-07-12 11:10:30,825 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 11:10:30,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:10:30,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528596295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:10:30,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:10:30,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-07-12 11:10:30,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411895156] [2022-07-12 11:10:30,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:10:30,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:10:30,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:10:30,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:10:30,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:10:30,828 INFO L87 Difference]: Start difference. First operand 137 states and 183 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-12 11:10:30,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:10:30,948 INFO L93 Difference]: Finished difference Result 327 states and 440 transitions. [2022-07-12 11:10:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 11:10:30,949 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 116 [2022-07-12 11:10:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:10:30,952 INFO L225 Difference]: With dead ends: 327 [2022-07-12 11:10:30,952 INFO L226 Difference]: Without dead ends: 203 [2022-07-12 11:10:30,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:10:30,954 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 63 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:10:30,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1097 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 126 Unchecked, 0.1s Time] [2022-07-12 11:10:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-12 11:10:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 169. [2022-07-12 11:10:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 114 states have internal predecessors, (136), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2022-07-12 11:10:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2022-07-12 11:10:30,968 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 116 [2022-07-12 11:10:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:10:30,969 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2022-07-12 11:10:30,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-12 11:10:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2022-07-12 11:10:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 11:10:30,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:10:30,972 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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] [2022-07-12 11:10:30,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:10:31,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:31,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:10:31,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:10:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1369878566, now seen corresponding path program 1 times [2022-07-12 11:10:31,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:10:31,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214372137] [2022-07-12 11:10:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:31,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:10:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:10:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:10:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:10:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:10:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:10:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:10:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 11:10:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:10:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:10:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:10:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:10:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 11:10:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:10:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-07-12 11:10:31,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:10:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214372137] [2022-07-12 11:10:31,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214372137] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:10:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199820558] [2022-07-12 11:10:31,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:31,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:31,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:10:31,492 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) [2022-07-12 11:10:31,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:10:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:31,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-12 11:10:31,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:10:31,654 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:10:31,655 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 [2022-07-12 11:10:31,664 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:10:31,664 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 [2022-07-12 11:10:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 105 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 11:10:32,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:10:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-12 11:10:32,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199820558] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:10:32,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:10:32,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 12] total 28 [2022-07-12 11:10:32,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725786502] [2022-07-12 11:10:32,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:10:32,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 11:10:32,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:10:32,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 11:10:32,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:10:32,844 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand has 28 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 10 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) [2022-07-12 11:10:34,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:10:34,117 INFO L93 Difference]: Finished difference Result 416 states and 579 transitions. [2022-07-12 11:10:34,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 11:10:34,117 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 10 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) Word has length 116 [2022-07-12 11:10:34,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:10:34,128 INFO L225 Difference]: With dead ends: 416 [2022-07-12 11:10:34,128 INFO L226 Difference]: Without dead ends: 295 [2022-07-12 11:10:34,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 244 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=327, Invalid=1743, Unknown=0, NotChecked=0, Total=2070 [2022-07-12 11:10:34,130 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 315 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:10:34,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2538 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1166 Invalid, 0 Unknown, 344 Unchecked, 0.6s Time] [2022-07-12 11:10:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-12 11:10:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 218. [2022-07-12 11:10:34,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 145 states have (on average 1.186206896551724) internal successors, (172), 149 states have internal predecessors, (172), 54 states have call successors, (54), 16 states have call predecessors, (54), 18 states have return successors, (67), 52 states have call predecessors, (67), 53 states have call successors, (67) [2022-07-12 11:10:34,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 293 transitions. [2022-07-12 11:10:34,156 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 293 transitions. Word has length 116 [2022-07-12 11:10:34,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:10:34,157 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 293 transitions. [2022-07-12 11:10:34,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 10 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) [2022-07-12 11:10:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 293 transitions. [2022-07-12 11:10:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 11:10:34,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:10:34,164 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2022-07-12 11:10:34,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:10:34,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:34,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:10:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:10:34,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1275142702, now seen corresponding path program 1 times [2022-07-12 11:10:34,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:10:34,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785906879] [2022-07-12 11:10:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:34,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:10:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:10:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:10:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:10:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 11:10:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:10:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:10:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 11:10:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:10:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:10:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:10:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:10:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 11:10:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:10:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,527 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-12 11:10:34,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:10:34,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785906879] [2022-07-12 11:10:34,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785906879] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:10:34,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110213977] [2022-07-12 11:10:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:34,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:34,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:10:34,529 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) [2022-07-12 11:10:34,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:10:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:34,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:10:34,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:10:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-12 11:10:34,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:10:34,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110213977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:10:34,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:10:34,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-12 11:10:34,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445039640] [2022-07-12 11:10:34,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:10:34,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:10:34,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:10:34,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:10:34,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:10:34,719 INFO L87 Difference]: Start difference. First operand 218 states and 293 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-12 11:10:34,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:10:34,841 INFO L93 Difference]: Finished difference Result 403 states and 553 transitions. [2022-07-12 11:10:34,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:10:34,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 116 [2022-07-12 11:10:34,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:10:34,844 INFO L225 Difference]: With dead ends: 403 [2022-07-12 11:10:34,844 INFO L226 Difference]: Without dead ends: 226 [2022-07-12 11:10:34,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:10:34,845 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 227 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:10:34,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 592 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:10:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-07-12 11:10:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-07-12 11:10:34,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 156 states have internal predecessors, (184), 55 states have call successors, (55), 16 states have call predecessors, (55), 18 states have return successors, (69), 53 states have call predecessors, (69), 54 states have call successors, (69) [2022-07-12 11:10:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 308 transitions. [2022-07-12 11:10:34,859 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 308 transitions. Word has length 116 [2022-07-12 11:10:34,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:10:34,859 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 308 transitions. [2022-07-12 11:10:34,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-12 11:10:34,860 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 308 transitions. [2022-07-12 11:10:34,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 11:10:34,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:10:34,861 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:10:34,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 11:10:35,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:35,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:10:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:10:35,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1492302642, now seen corresponding path program 1 times [2022-07-12 11:10:35,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:10:35,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699681451] [2022-07-12 11:10:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:35,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:10:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:10:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:10:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 11:10:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:10:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 11:10:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:10:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:10:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:10:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:10:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:10:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:10:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:10:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:10:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 11:10:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-12 11:10:35,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:10:35,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699681451] [2022-07-12 11:10:35,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699681451] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:10:35,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427541082] [2022-07-12 11:10:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:10:35,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:35,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:10:35,268 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) [2022-07-12 11:10:35,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:10:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:10:35,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-12 11:10:35,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:10:35,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:10:35,545 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 11:10:35,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 11:10:35,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-12 11:10:35,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-12 11:10:35,615 INFO L356 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2022-07-12 11:10:35,617 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-12 11:10:35,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:10:35,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:10:35,835 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_45| 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) [2022-07-12 11:10:35,838 INFO L158 Benchmark]: Toolchain (without parser) took 10011.02ms. Allocated memory was 121.6MB in the beginning and 247.5MB in the end (delta: 125.8MB). Free memory was 82.7MB in the beginning and 181.2MB in the end (delta: -98.6MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2022-07-12 11:10:35,838 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 81.8MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 11:10:35,838 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1339.35ms. Allocated memory was 121.6MB in the beginning and 186.6MB in the end (delta: 65.0MB). Free memory was 82.7MB in the beginning and 131.2MB in the end (delta: -48.5MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2022-07-12 11:10:35,838 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.83ms. Allocated memory is still 186.6MB. Free memory was 131.2MB in the beginning and 124.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 11:10:35,838 INFO L158 Benchmark]: Boogie Preprocessor took 80.84ms. Allocated memory is still 186.6MB. Free memory was 124.9MB in the beginning and 121.7MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 11:10:35,839 INFO L158 Benchmark]: RCFGBuilder took 618.22ms. Allocated memory is still 186.6MB. Free memory was 121.7MB in the beginning and 92.4MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-07-12 11:10:35,839 INFO L158 Benchmark]: TraceAbstraction took 7861.95ms. Allocated memory was 186.6MB in the beginning and 247.5MB in the end (delta: 60.8MB). Free memory was 92.4MB in the beginning and 181.2MB in the end (delta: -88.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 11:10:35,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 81.8MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1339.35ms. Allocated memory was 121.6MB in the beginning and 186.6MB in the end (delta: 65.0MB). Free memory was 82.7MB in the beginning and 131.2MB in the end (delta: -48.5MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.83ms. Allocated memory is still 186.6MB. Free memory was 131.2MB in the beginning and 124.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.84ms. Allocated memory is still 186.6MB. Free memory was 124.9MB in the beginning and 121.7MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.22ms. Allocated memory is still 186.6MB. Free memory was 121.7MB in the beginning and 92.4MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7861.95ms. Allocated memory was 186.6MB in the beginning and 247.5MB in the end (delta: 60.8MB). Free memory was 92.4MB in the beginning and 181.2MB in the end (delta: -88.8MB). There was no memory consumed. 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_45| 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_45| 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. [2022-07-12 11:10:35,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- 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_pop_back_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 bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:10:37,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:10:37,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:10:37,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:10:37,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:10:37,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:10:37,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:10:37,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:10:37,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:10:37,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:10:37,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:10:37,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:10:37,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:10:37,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:10:37,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:10:37,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:10:37,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:10:37,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:10:37,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:10:37,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:10:37,780 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:10:37,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:10:37,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:10:37,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:10:37,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:10:37,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:10:37,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:10:37,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:10:37,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:10:37,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:10:37,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:10:37,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:10:37,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:10:37,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:10:37,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:10:37,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:10:37,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:10:37,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:10:37,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:10:37,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:10:37,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:10:37,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:10:37,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-12 11:10:37,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:10:37,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:10:37,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:10:37,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:10:37,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:10:37,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:10:37,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:10:37,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:10:37,828 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:10:37,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:10:37,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:10:37,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:10:37,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:10:37,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:10:37,829 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 11:10:37,829 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:10:37,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:10:37,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:10:37,830 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 11:10:37,831 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 11:10:37,831 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:10:37,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:10:37,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:10:37,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 11:10:37,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 [2022-07-12 11:10:38,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:10:38,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:10:38,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:10:38,094 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:10:38,094 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:10:38,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2022-07-12 11:10:38,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c3e06e4/3c1366dc529c4215a5359d1d6d67305f/FLAG63978fdf7 [2022-07-12 11:10:38,755 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:10:38,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2022-07-12 11:10:38,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c3e06e4/3c1366dc529c4215a5359d1d6d67305f/FLAG63978fdf7 [2022-07-12 11:10:38,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c3e06e4/3c1366dc529c4215a5359d1d6d67305f [2022-07-12 11:10:38,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:10:38,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:10:38,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:10:38,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:10:38,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:10:38,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:10:38" (1/1) ... [2022-07-12 11:10:38,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43083109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:10:38, skipping insertion in model container [2022-07-12 11:10:38,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:10:38" (1/1) ... [2022-07-12 11:10:38,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:10:39,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:10:39,206 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_pop_back_harness.i[4498,4511] [2022-07-12 11:10:39,210 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_pop_back_harness.i[4558,4571] [2022-07-12 11:10:39,653 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,653 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,653 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,654 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,654 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,662 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,663 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,664 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,664 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,665 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,665 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,666 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,666 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:10:39,853 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:10:39,854 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:10:39,855 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:10:39,855 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:10:39,856 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:10:39,856 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:10:39,857 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:10:39,857 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:10:39,857 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:10:39,858 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:10:39,930 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:10:39,961 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) [2022-07-12 11:10:39,967 INFO L158 Benchmark]: Toolchain (without parser) took 1010.83ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 42.0MB in the beginning and 68.2MB in the end (delta: -26.2MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-07-12 11:10:39,967 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 67.1MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 11:10:39,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1009.59ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 41.8MB in the beginning and 68.2MB in the end (delta: -26.5MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-07-12 11:10:39,969 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 67.1MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 49.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1009.59ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 41.8MB in the beginning and 68.2MB in the end (delta: -26.5MB). Peak memory consumption was 26.0MB. 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