./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 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/quick_sort_split.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh --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-2329fc7 [2022-12-14 12:06:46,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:06:46,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:06:46,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:06:46,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:06:46,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:06:46,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:06:46,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:06:46,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:06:46,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:06:46,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:06:46,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:06:46,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:06:46,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:06:46,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:06:46,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:06:46,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:06:46,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:06:46,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:06:46,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:06:46,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:06:46,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:06:46,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:06:46,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:06:46,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:06:46,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:06:46,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:06:46,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:06:46,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:06:46,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:06:46,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:06:46,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:06:46,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:06:46,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:06:46,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:06:46,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:06:46,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:06:46,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:06:46,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:06:46,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:06:46,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:06:46,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:06:46,580 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:06:46,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:06:46,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:06:46,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:06:46,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:06:46,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:06:46,581 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:06:46,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:06:46,581 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:06:46,581 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:06:46,581 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:06:46,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:06:46,581 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:06:46,582 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:06:46,582 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:06:46,582 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:06:46,582 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:06:46,582 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:06:46,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:06:46,582 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:06:46,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:06:46,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:06:46,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:06:46,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:06:46,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:06:46,584 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:06:46,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:06:46,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:06:46,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:06:46,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:06:46,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:06:46,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:06:46,585 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_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 608b74039fb15a247aaf810504577eacfdbb21e6889e19896989d0cd0427fa05 [2022-12-14 12:06:46,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:06:46,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:06:46,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:06:46,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:06:46,773 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:06:46,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/heap-data/quick_sort_split.i [2022-12-14 12:06:49,284 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:06:49,452 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:06:49,452 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/sv-benchmarks/c/heap-data/quick_sort_split.i [2022-12-14 12:06:49,460 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/data/7eac971c7/b2d47e417c5c444187bdc3133ed09256/FLAG787847a81 [2022-12-14 12:06:49,471 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/data/7eac971c7/b2d47e417c5c444187bdc3133ed09256 [2022-12-14 12:06:49,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:06:49,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:06:49,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:06:49,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:06:49,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:06:49,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105a3a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49, skipping insertion in model container [2022-12-14 12:06:49,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:06:49,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:06:49,719 WARN L237 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_213b178b-0675-4bf1-88f9-5671ac0bada5/sv-benchmarks/c/heap-data/quick_sort_split.i[23986,23999] [2022-12-14 12:06:49,722 WARN L237 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_213b178b-0675-4bf1-88f9-5671ac0bada5/sv-benchmarks/c/heap-data/quick_sort_split.i[24106,24119] [2022-12-14 12:06:49,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:06:49,730 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:06:49,754 WARN L237 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_213b178b-0675-4bf1-88f9-5671ac0bada5/sv-benchmarks/c/heap-data/quick_sort_split.i[23986,23999] [2022-12-14 12:06:49,755 WARN L237 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_213b178b-0675-4bf1-88f9-5671ac0bada5/sv-benchmarks/c/heap-data/quick_sort_split.i[24106,24119] [2022-12-14 12:06:49,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:06:49,772 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:06:49,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49 WrapperNode [2022-12-14 12:06:49,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:06:49,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:06:49,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:06:49,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:06:49,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,801 INFO L138 Inliner]: procedures = 125, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-12-14 12:06:49,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:06:49,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:06:49,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:06:49,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:06:49,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,820 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:06:49,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:06:49,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:06:49,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:06:49,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (1/1) ... [2022-12-14 12:06:49,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:06:49,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:06:49,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:06:49,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:06:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:06:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:06:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 12:06:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:06:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:06:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 12:06:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 12:06:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:06:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 12:06:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:06:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2022-12-14 12:06:49,883 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2022-12-14 12:06:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:06:49,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:06:49,980 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:06:49,982 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:06:50,143 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:06:50,179 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:06:50,179 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 12:06:50,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:06:50 BoogieIcfgContainer [2022-12-14 12:06:50,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:06:50,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:06:50,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:06:50,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:06:50,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:06:49" (1/3) ... [2022-12-14 12:06:50,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd535b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:06:50, skipping insertion in model container [2022-12-14 12:06:50,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:06:49" (2/3) ... [2022-12-14 12:06:50,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd535b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:06:50, skipping insertion in model container [2022-12-14 12:06:50,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:06:50" (3/3) ... [2022-12-14 12:06:50,191 INFO L112 eAbstractionObserver]: Analyzing ICFG quick_sort_split.i [2022-12-14 12:06:50,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:06:50,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 12:06:50,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:06:50,248 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;@6c15449e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:06:50,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 12:06:50,252 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) [2022-12-14 12:06:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:06:50,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:06:50,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:06:50,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:06:50,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:06:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1046363541, now seen corresponding path program 1 times [2022-12-14 12:06:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:06:50,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160665690] [2022-12-14 12:06:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:06:50,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:06:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:06:50,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:06:50,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:06:50,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160665690] [2022-12-14 12:06:50,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160665690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:06:50,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:06:50,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:06:50,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741598948] [2022-12-14 12:06:50,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:06:50,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 12:06:50,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:06:50,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 12:06:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 12:06:50,403 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) [2022-12-14 12:06:50,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:06:50,438 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-12-14 12:06:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 12:06:50,440 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 [2022-12-14 12:06:50,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:06:50,460 INFO L225 Difference]: With dead ends: 34 [2022-12-14 12:06:50,461 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 12:06:50,464 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 [2022-12-14 12:06:50,467 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:06:50,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:06:50,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 12:06:50,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-14 12:06:50,501 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) [2022-12-14 12:06:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-12-14 12:06:50,503 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 7 [2022-12-14 12:06:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:06:50,503 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-12-14 12:06:50,503 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) [2022-12-14 12:06:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-12-14 12:06:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:06:50,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:06:50,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:06:50,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:06:50,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:06:50,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:06:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash -770078160, now seen corresponding path program 1 times [2022-12-14 12:06:50,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:06:50,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355953088] [2022-12-14 12:06:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:06:50,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:06:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:06:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:06:50,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:06:50,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355953088] [2022-12-14 12:06:50,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355953088] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:06:50,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:06:50,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:06:50,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881784212] [2022-12-14 12:06:50,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:06:50,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:06:50,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:06:50,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:06:50,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:06:50,572 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) [2022-12-14 12:06:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:06:50,598 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-12-14 12:06:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:06:50,599 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 [2022-12-14 12:06:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:06:50,600 INFO L225 Difference]: With dead ends: 26 [2022-12-14 12:06:50,600 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 12:06:50,600 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 [2022-12-14 12:06:50,601 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 9 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 [2022-12-14 12:06:50,602 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] [2022-12-14 12:06:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 12:06:50,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 12:06:50,605 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) [2022-12-14 12:06:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-12-14 12:06:50,605 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 8 [2022-12-14 12:06:50,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:06:50,606 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-12-14 12:06:50,606 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) [2022-12-14 12:06:50,606 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-12-14 12:06:50,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 12:06:50,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:06:50,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:06:50,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:06:50,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:06:50,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:06:50,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1898738407, now seen corresponding path program 1 times [2022-12-14 12:06:50,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:06:50,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863882056] [2022-12-14 12:06:50,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:06:50,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:06:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:06:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:06:50,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:06:50,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863882056] [2022-12-14 12:06:50,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863882056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:06:50,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:06:50,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:06:50,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977436188] [2022-12-14 12:06:50,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:06:50,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:06:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:06:50,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:06:50,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:06:50,656 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) [2022-12-14 12:06:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:06:50,679 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2022-12-14 12:06:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:06:50,680 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 [2022-12-14 12:06:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:06:50,680 INFO L225 Difference]: With dead ends: 17 [2022-12-14 12:06:50,680 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 12:06:50,680 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 [2022-12-14 12:06:50,681 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 9 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 [2022-12-14 12:06:50,681 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] [2022-12-14 12:06:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 12:06:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 12:06:50,682 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) [2022-12-14 12:06:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 12:06:50,682 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2022-12-14 12:06:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:06:50,683 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 12:06:50,683 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) [2022-12-14 12:06:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 12:06:50,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 12:06:50,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 12:06:50,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 12:06:50,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:06:50,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 12:06:50,716 INFO L899 garLoopResultBuilder]: For program point L609(lines 609 610) no Hoare annotation was computed. [2022-12-14 12:06:50,716 INFO L899 garLoopResultBuilder]: For program point L609-2(lines 609 610) no Hoare annotation was computed. [2022-12-14 12:06:50,716 INFO L899 garLoopResultBuilder]: For program point L605(line 605) no Hoare annotation was computed. [2022-12-14 12:06:50,716 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 610) no Hoare annotation was computed. [2022-12-14 12:06:50,716 INFO L902 garLoopResultBuilder]: At program point L585(line 585) the Hoare annotation is: true [2022-12-14 12:06:50,717 INFO L899 garLoopResultBuilder]: For program point L610(line 610) no Hoare annotation was computed. [2022-12-14 12:06:50,717 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 605) no Hoare annotation was computed. [2022-12-14 12:06:50,717 INFO L899 garLoopResultBuilder]: For program point L582-1(lines 582 588) no Hoare annotation was computed. [2022-12-14 12:06:50,717 INFO L902 garLoopResultBuilder]: At program point L582-3(lines 582 588) the Hoare annotation is: true [2022-12-14 12:06:50,717 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 12:06:50,718 INFO L895 garLoopResultBuilder]: At program point L603-1(lines 603 607) 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)) [2022-12-14 12:06:50,718 INFO L902 garLoopResultBuilder]: At program point L587(line 587) the Hoare annotation is: true [2022-12-14 12:06:50,718 INFO L902 garLoopResultBuilder]: At program point L587-1(lines 582 588) the Hoare annotation is: true [2022-12-14 12:06:50,718 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 12:06:50,718 INFO L895 garLoopResultBuilder]: At program point L608-1(lines 608 612) 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)) [2022-12-14 12:06:50,718 INFO L899 garLoopResultBuilder]: For program point L604(lines 604 605) no Hoare annotation was computed. [2022-12-14 12:06:50,718 INFO L899 garLoopResultBuilder]: For program point L604-2(lines 604 605) no Hoare annotation was computed. [2022-12-14 12:06:50,719 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)) [2022-12-14 12:06:50,719 INFO L899 garLoopResultBuilder]: For program point L584(lines 584 587) no Hoare annotation was computed. [2022-12-14 12:06:50,719 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 573 579) the Hoare annotation is: true [2022-12-14 12:06:50,719 INFO L899 garLoopResultBuilder]: For program point append_to_listEXIT(lines 573 579) no Hoare annotation was computed. [2022-12-14 12:06:50,722 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 12:06:50,723 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 12:06:50,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 12:06:50 BoogieIcfgContainer [2022-12-14 12:06:50,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 12:06:50,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 12:06:50,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 12:06:50,736 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 12:06:50,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:06:50" (3/4) ... [2022-12-14 12:06:50,738 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 12:06:50,743 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure append_to_list [2022-12-14 12:06:50,746 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-14 12:06:50,746 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 12:06:50,747 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 12:06:50,747 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 12:06:50,773 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 12:06:50,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 12:06:50,774 INFO L158 Benchmark]: Toolchain (without parser) took 1300.32ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 105.8MB in the beginning and 115.2MB in the end (delta: -9.4MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-12-14 12:06:50,774 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:06:50,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.35ms. Allocated memory is still 138.4MB. Free memory was 105.8MB in the beginning and 88.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 12:06:50,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.11ms. Allocated memory is still 138.4MB. Free memory was 88.6MB in the beginning and 86.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:06:50,775 INFO L158 Benchmark]: Boogie Preprocessor took 20.25ms. Allocated memory is still 138.4MB. Free memory was 86.6MB in the beginning and 85.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:06:50,775 INFO L158 Benchmark]: RCFGBuilder took 359.71ms. Allocated memory is still 138.4MB. Free memory was 85.0MB in the beginning and 68.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-14 12:06:50,776 INFO L158 Benchmark]: TraceAbstraction took 550.04ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 67.8MB in the beginning and 118.3MB in the end (delta: -50.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:06:50,776 INFO L158 Benchmark]: Witness Printer took 38.16ms. Allocated memory is still 167.8MB. Free memory was 118.3MB in the beginning and 115.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 12:06:50,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.35ms. Allocated memory is still 138.4MB. Free memory was 105.8MB in the beginning and 88.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.11ms. Allocated memory is still 138.4MB. Free memory was 88.6MB in the beginning and 86.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.25ms. Allocated memory is still 138.4MB. Free memory was 86.6MB in the beginning and 85.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 359.71ms. Allocated memory is still 138.4MB. Free memory was 85.0MB in the beginning and 68.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 550.04ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 67.8MB in the beginning and 118.3MB in the end (delta: -50.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 38.16ms. Allocated memory is still 167.8MB. Free memory was 118.3MB in the beginning and 115.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 43 mSDtfsCounter, 22 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, 0.0s SatisfiabilityAnalysisTime, 0.1s 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: 603]: Loop Invariant Derived loop invariant: ((high == 0 && high == 0) && low == 0) && low == 0 - InvariantResult [Line: 608]: 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! [2022-12-14 12:06:50,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b178b-0675-4bf1-88f9-5671ac0bada5/bin/utaipan-gh47qXpMRh/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