./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/quick_sort_split.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/quick_sort_split.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 608b74039fb15a247aaf810504577eacfdbb21e6889e19896989d0cd0427fa05 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:42:10,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:42:10,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:42:10,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:42:10,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:42:10,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:42:10,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:42:10,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:42:10,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:42:10,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:42:10,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:42:10,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:42:10,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:42:10,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:42:10,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:42:10,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:42:10,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:42:10,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:42:10,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:42:10,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:42:10,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:42:10,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:42:10,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:42:10,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:42:10,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:42:10,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:42:10,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:42:10,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:42:10,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:42:10,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:42:10,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:42:10,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:42:10,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:42:10,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:42:10,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:42:10,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:42:10,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:42:10,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:42:10,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:42:10,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:42:10,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:42:10,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:42:10,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:42:10,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:42:10,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:42:10,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:42:10,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:42:10,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:42:10,619 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:42:10,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:42:10,620 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:42:10,620 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:42:10,621 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:42:10,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:42:10,622 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:42:10,622 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:42:10,622 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:42:10,622 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:42:10,623 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:42:10,623 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:42:10,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:42:10,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:42:10,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:42:10,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:42:10,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:42:10,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:42:10,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:42:10,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:42:10,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:42:10,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:42:10,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:42:10,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:42:10,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:42:10,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:42:10,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:42:10,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:42:10,627 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:42:10,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:42:10,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:42:10,628 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:42:10,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:42:10,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:42:10,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:42:10,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608b74039fb15a247aaf810504577eacfdbb21e6889e19896989d0cd0427fa05 [2022-10-17 17:42:10,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:42:10,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:42:10,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:42:10,966 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:42:10,967 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:42:10,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/heap-data/quick_sort_split.i [2022-10-17 17:42:11,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/data/85e60a1dd/31be8cabc30b437cb0bfcb223374b8e5/FLAGba109c2df [2022-10-17 17:42:11,529 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:42:11,530 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/sv-benchmarks/c/heap-data/quick_sort_split.i [2022-10-17 17:42:11,552 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/data/85e60a1dd/31be8cabc30b437cb0bfcb223374b8e5/FLAGba109c2df [2022-10-17 17:42:11,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/data/85e60a1dd/31be8cabc30b437cb0bfcb223374b8e5 [2022-10-17 17:42:11,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:42:11,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:42:11,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:42:11,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:42:11,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:42:11,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:42:11" (1/1) ... [2022-10-17 17:42:11,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39fd51ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:11, skipping insertion in model container [2022-10-17 17:42:11,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:42:11" (1/1) ... [2022-10-17 17:42:11,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:42:11,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:42:12,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/sv-benchmarks/c/heap-data/quick_sort_split.i[23986,23999] [2022-10-17 17:42:12,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/sv-benchmarks/c/heap-data/quick_sort_split.i[24106,24119] [2022-10-17 17:42:12,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:42:12,356 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:42:12,423 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/sv-benchmarks/c/heap-data/quick_sort_split.i[23986,23999] [2022-10-17 17:42:12,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/sv-benchmarks/c/heap-data/quick_sort_split.i[24106,24119] [2022-10-17 17:42:12,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:42:12,470 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:42:12,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12 WrapperNode [2022-10-17 17:42:12,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:42:12,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:42:12,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:42:12,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:42:12,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,534 INFO L138 Inliner]: procedures = 125, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2022-10-17 17:42:12,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:42:12,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:42:12,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:42:12,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:42:12,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,570 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:42:12,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:42:12,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:42:12,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:42:12,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (1/1) ... [2022-10-17 17:42:12,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:42:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:42:12,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:42:12,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:42:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:42:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:42:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:42:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:42:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:42:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:42:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:42:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:42:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:42:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2022-10-17 17:42:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2022-10-17 17:42:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:42:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:42:12,830 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:42:12,833 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:42:13,099 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:42:13,156 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:42:13,156 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 17:42:13,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:42:13 BoogieIcfgContainer [2022-10-17 17:42:13,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:42:13,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:42:13,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:42:13,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:42:13,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:42:11" (1/3) ... [2022-10-17 17:42:13,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea3cb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:42:13, skipping insertion in model container [2022-10-17 17:42:13,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:42:12" (2/3) ... [2022-10-17 17:42:13,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea3cb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:42:13, skipping insertion in model container [2022-10-17 17:42:13,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:42:13" (3/3) ... [2022-10-17 17:42:13,178 INFO L112 eAbstractionObserver]: Analyzing ICFG quick_sort_split.i [2022-10-17 17:42:13,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:42:13,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 17:42:13,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:42:13,291 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6695ca72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:42:13,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 17:42:13,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:42:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:42:13,305 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:42:13,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:42:13,307 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:42:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:42:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1763621077, now seen corresponding path program 1 times [2022-10-17 17:42:13,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:42:13,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402819085] [2022-10-17 17:42:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:42:13,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:42:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:42:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:42:13,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:42:13,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402819085] [2022-10-17 17:42:13,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402819085] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:42:13,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:42:13,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:42:13,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498470691] [2022-10-17 17:42:13,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:42:13,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:42:13,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:42:13,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:42:13,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:42:13,570 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:42:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:42:13,660 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-10-17 17:42:13,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:42:13,663 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 17:42:13,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:42:13,672 INFO L225 Difference]: With dead ends: 34 [2022-10-17 17:42:13,673 INFO L226 Difference]: Without dead ends: 20 [2022-10-17 17:42:13,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:42:13,680 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:42:13,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:42:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-17 17:42:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-17 17:42:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:42:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-10-17 17:42:13,736 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 7 [2022-10-17 17:42:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:42:13,737 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-10-17 17:42:13,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:42:13,738 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-10-17 17:42:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:42:13,739 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:42:13,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:42:13,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:42:13,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:42:13,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:42:13,742 INFO L85 PathProgramCache]: Analyzing trace with hash 292425098, now seen corresponding path program 1 times [2022-10-17 17:42:13,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:42:13,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201449449] [2022-10-17 17:42:13,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:42:13,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:42:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:42:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:42:13,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:42:13,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201449449] [2022-10-17 17:42:13,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201449449] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:42:13,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:42:13,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:42:13,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901679620] [2022-10-17 17:42:13,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:42:13,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:42:13,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:42:13,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:42:13,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:42:13,952 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:42:13,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:42:13,996 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-10-17 17:42:14,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:42:14,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 17:42:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:42:14,003 INFO L225 Difference]: With dead ends: 26 [2022-10-17 17:42:14,004 INFO L226 Difference]: Without dead ends: 16 [2022-10-17 17:42:14,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:42:14,008 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:42:14,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 23 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:42:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-17 17:42:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-17 17:42:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 17:42:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-10-17 17:42:14,029 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2022-10-17 17:42:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:42:14,029 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-10-17 17:42:14,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:42:14,032 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-10-17 17:42:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:42:14,034 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:42:14,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:42:14,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:42:14,035 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:42:14,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:42:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash 476690417, now seen corresponding path program 1 times [2022-10-17 17:42:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:42:14,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494589947] [2022-10-17 17:42:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:42:14,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:42:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:42:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:42:14,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:42:14,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494589947] [2022-10-17 17:42:14,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494589947] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:42:14,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:42:14,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:42:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782889942] [2022-10-17 17:42:14,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:42:14,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:42:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:42:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:42:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:42:14,169 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:42:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:42:14,214 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2022-10-17 17:42:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:42:14,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-17 17:42:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:42:14,217 INFO L225 Difference]: With dead ends: 17 [2022-10-17 17:42:14,217 INFO L226 Difference]: Without dead ends: 0 [2022-10-17 17:42:14,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:42:14,226 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:42:14,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:42:14,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-17 17:42:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-17 17:42:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:42:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 17:42:14,231 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2022-10-17 17:42:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:42:14,231 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 17:42:14,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:42:14,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-17 17:42:14,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-17 17:42:14,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-10-17 17:42:14,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-10-17 17:42:14,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:42:14,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-10-17 17:42:14,281 INFO L899 garLoopResultBuilder]: For program point L609(lines 609 610) no Hoare annotation was computed. [2022-10-17 17:42:14,281 INFO L899 garLoopResultBuilder]: For program point L609-2(lines 609 610) no Hoare annotation was computed. [2022-10-17 17:42:14,281 INFO L899 garLoopResultBuilder]: For program point L605(line 605) no Hoare annotation was computed. [2022-10-17 17:42:14,281 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 610) no Hoare annotation was computed. [2022-10-17 17:42:14,282 INFO L902 garLoopResultBuilder]: At program point L585(line 585) the Hoare annotation is: true [2022-10-17 17:42:14,282 INFO L899 garLoopResultBuilder]: For program point L610(line 610) no Hoare annotation was computed. [2022-10-17 17:42:14,282 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-10-17 17:42:14,282 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 605) no Hoare annotation was computed. [2022-10-17 17:42:14,282 INFO L899 garLoopResultBuilder]: For program point L582-1(lines 582 588) no Hoare annotation was computed. [2022-10-17 17:42:14,283 INFO L902 garLoopResultBuilder]: At program point L582-3(lines 582 588) the Hoare annotation is: true [2022-10-17 17:42:14,283 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-10-17 17:42:14,283 INFO L895 garLoopResultBuilder]: At program point L603-1(lines 591 613) the Hoare annotation is: (and (= |ULTIMATE.start_main_~high~0#1.base| 0) (= |ULTIMATE.start_main_~high~0#1.offset| 0) (= |ULTIMATE.start_main_~low~0#1.offset| 0) (= |ULTIMATE.start_main_~low~0#1.base| 0)) [2022-10-17 17:42:14,283 INFO L902 garLoopResultBuilder]: At program point L587(line 587) the Hoare annotation is: true [2022-10-17 17:42:14,283 INFO L902 garLoopResultBuilder]: At program point L587-1(lines 582 588) the Hoare annotation is: true [2022-10-17 17:42:14,284 INFO L895 garLoopResultBuilder]: At program point L608-1(lines 591 613) the Hoare annotation is: (and (= |ULTIMATE.start_main_~high~0#1.base| 0) (= |ULTIMATE.start_main_~high~0#1.offset| 0) (= |ULTIMATE.start_main_~low~0#1.offset| 0) (= |ULTIMATE.start_main_~low~0#1.base| 0)) [2022-10-17 17:42:14,284 INFO L899 garLoopResultBuilder]: For program point L604(lines 604 605) no Hoare annotation was computed. [2022-10-17 17:42:14,284 INFO L899 garLoopResultBuilder]: For program point L604-2(lines 604 605) no Hoare annotation was computed. [2022-10-17 17:42:14,284 INFO L895 garLoopResultBuilder]: At program point L596-2(lines 596 602) the Hoare annotation is: (and (= |ULTIMATE.start_main_~high~0#1.base| 0) (= |ULTIMATE.start_main_~high~0#1.offset| 0) (= |ULTIMATE.start_main_~low~0#1.offset| 0) (= |ULTIMATE.start_main_~low~0#1.base| 0)) [2022-10-17 17:42:14,285 INFO L899 garLoopResultBuilder]: For program point L584(lines 584 587) no Hoare annotation was computed. [2022-10-17 17:42:14,285 INFO L899 garLoopResultBuilder]: For program point append_to_listEXIT(lines 573 579) no Hoare annotation was computed. [2022-10-17 17:42:14,285 INFO L902 garLoopResultBuilder]: At program point append_to_listENTRY(lines 573 579) the Hoare annotation is: true [2022-10-17 17:42:14,293 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-17 17:42:14,296 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:42:14,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:42:14 BoogieIcfgContainer [2022-10-17 17:42:14,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:42:14,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:42:14,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:42:14,323 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:42:14,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:42:13" (3/4) ... [2022-10-17 17:42:14,328 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-10-17 17:42:14,334 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure append_to_list [2022-10-17 17:42:14,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-10-17 17:42:14,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-10-17 17:42:14,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-10-17 17:42:14,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-10-17 17:42:14,403 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/witness.graphml [2022-10-17 17:42:14,403 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:42:14,404 INFO L158 Benchmark]: Toolchain (without parser) took 2539.71ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 57.5MB in the beginning and 37.8MB in the end (delta: 19.7MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2022-10-17 17:42:14,405 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 55.8MB in the end (delta: 70.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:42:14,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.54ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 57.3MB in the beginning and 64.2MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:42:14,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.88ms. Allocated memory is still 96.5MB. Free memory was 64.2MB in the beginning and 62.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:42:14,406 INFO L158 Benchmark]: Boogie Preprocessor took 39.18ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 60.6MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:42:14,407 INFO L158 Benchmark]: RCFGBuilder took 583.58ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 42.6MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-10-17 17:42:14,408 INFO L158 Benchmark]: TraceAbstraction took 1159.13ms. Allocated memory is still 96.5MB. Free memory was 41.9MB in the beginning and 41.0MB in the end (delta: 871.4kB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2022-10-17 17:42:14,408 INFO L158 Benchmark]: Witness Printer took 80.64ms. Allocated memory is still 96.5MB. Free memory was 41.0MB in the beginning and 37.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:42:14,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 79.7MB. Free memory was 55.9MB in the beginning and 55.8MB in the end (delta: 70.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 604.54ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 57.3MB in the beginning and 64.2MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.88ms. Allocated memory is still 96.5MB. Free memory was 64.2MB in the beginning and 62.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.18ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 60.6MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 583.58ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 42.6MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1159.13ms. Allocated memory is still 96.5MB. Free memory was 41.9MB in the beginning and 41.0MB in the end (delta: 871.4kB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Witness Printer took 80.64ms. Allocated memory is still 96.5MB. Free memory was 41.0MB in the beginning and 37.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 605]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 610]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 42 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 44 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 591]: Loop Invariant Derived loop invariant: ((high == 0 && high == 0) && low == 0) && low == 0 - InvariantResult [Line: 591]: Loop Invariant Derived loop invariant: ((high == 0 && high == 0) && low == 0) && low == 0 - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 596]: Loop Invariant Derived loop invariant: ((high == 0 && high == 0) && low == 0) && low == 0 RESULT: Ultimate proved your program to be correct! [2022-10-17 17:42:14,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_243321b8-0fcb-449c-9eb4-3c984832c86e/bin/utaipan-G1rejxKTta/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 Writing output log to file Ultimate.log Result: TRUE