./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/splice-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:34:19,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:34:19,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:34:19,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:34:19,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:34:19,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:34:19,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:34:19,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:34:19,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:34:19,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:34:19,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:34:19,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:34:19,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:34:19,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:34:19,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:34:19,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:34:19,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:34:19,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:34:19,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:34:19,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:34:19,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:34:19,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:34:19,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:34:19,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:34:19,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:34:19,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:34:19,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:34:19,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:34:19,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:34:19,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:34:19,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:34:19,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:34:19,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:34:19,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:34:19,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:34:19,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:34:19,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:34:19,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:34:19,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:34:19,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:34:19,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:34:19,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:34:19,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:34:19,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:34:19,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:34:19,693 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:34:19,693 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:34:19,693 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:34:19,696 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:34:19,696 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:34:19,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:34:19,697 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:34:19,698 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:34:19,698 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:34:19,698 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:34:19,699 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:34:19,699 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:34:19,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:34:19,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:34:19,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:34:19,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:34:19,701 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:34:19,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:34:19,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:34:19,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:34:19,702 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:34:19,702 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:34:19,702 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:34:19,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:34:19,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:34:19,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:34:19,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:34:19,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:34:19,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:34:19,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:34:19,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:34:19,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:34:19,706 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:34:19,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:34:19,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:34:19,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:34:19,707 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc [2021-11-03 04:34:20,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:34:20,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:34:20,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:34:20,085 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:34:20,086 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:34:20,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/list-properties/splice-2.i [2021-11-03 04:34:20,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data/0c9a3db46/c6e8da2566fd43dc8fad9c79ef8aa63a/FLAG8035b074b [2021-11-03 04:34:20,750 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:34:20,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/sv-benchmarks/c/list-properties/splice-2.i [2021-11-03 04:34:20,765 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data/0c9a3db46/c6e8da2566fd43dc8fad9c79ef8aa63a/FLAG8035b074b [2021-11-03 04:34:21,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data/0c9a3db46/c6e8da2566fd43dc8fad9c79ef8aa63a [2021-11-03 04:34:21,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:34:21,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:34:21,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:34:21,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:34:21,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:34:21,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613c978d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21, skipping insertion in model container [2021-11-03 04:34:21,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:34:21,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:34:21,425 WARN L228 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_29f84fc5-b966-4045-ae57-6058cb0323f7/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-03 04:34:21,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:34:21,438 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:34:21,483 WARN L228 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_29f84fc5-b966-4045-ae57-6058cb0323f7/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-03 04:34:21,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:34:21,517 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:34:21,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21 WrapperNode [2021-11-03 04:34:21,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:34:21,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:34:21,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:34:21,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:34:21,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:34:21,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:34:21,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:34:21,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:34:21,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:34:21,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:34:21,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:34:21,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:34:21,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (1/1) ... [2021-11-03 04:34:21,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:34:21,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:34:21,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:34:21,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:34:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:34:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:34:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:34:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:34:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:34:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:34:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:34:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:34:21,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:34:22,422 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:34:22,429 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-03 04:34:22,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:34:22 BoogieIcfgContainer [2021-11-03 04:34:22,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:34:22,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:34:22,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:34:22,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:34:22,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:34:21" (1/3) ... [2021-11-03 04:34:22,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c8d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:34:22, skipping insertion in model container [2021-11-03 04:34:22,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:21" (2/3) ... [2021-11-03 04:34:22,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9c8d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:34:22, skipping insertion in model container [2021-11-03 04:34:22,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:34:22" (3/3) ... [2021-11-03 04:34:22,444 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-11-03 04:34:22,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:34:22,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-03 04:34:22,498 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:34:22,505 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:34:22,505 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-03 04:34:22,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 33 states have (on average 2.303030303030303) internal successors, (76), 63 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:34:22,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:22,531 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:34:22,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-03 04:34:22,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:22,538 INFO L85 PathProgramCache]: Analyzing trace with hash 5902175, now seen corresponding path program 1 times [2021-11-03 04:34:22,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:34:22,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842817351] [2021-11-03 04:34:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:22,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:34:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:22,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:34:22,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842817351] [2021-11-03 04:34:22,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842817351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:22,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:22,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:34:22,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108026119] [2021-11-03 04:34:22,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:34:22,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:34:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:34:22,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:34:22,770 INFO L87 Difference]: Start difference. First operand has 64 states, 33 states have (on average 2.303030303030303) internal successors, (76), 63 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:22,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:22,821 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2021-11-03 04:34:22,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:34:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-03 04:34:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:22,835 INFO L225 Difference]: With dead ends: 64 [2021-11-03 04:34:22,836 INFO L226 Difference]: Without dead ends: 61 [2021-11-03 04:34:22,837 INFO L786 BasicCegarLoop]: 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 [2021-11-03 04:34:22,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-03 04:34:22,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-03 04:34:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 31 states have (on average 2.193548387096774) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-11-03 04:34:22,882 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 4 [2021-11-03 04:34:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:22,883 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-11-03 04:34:22,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:22,883 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-11-03 04:34:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:34:22,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:22,884 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:34:22,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:34:22,884 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-03 04:34:22,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:22,888 INFO L85 PathProgramCache]: Analyzing trace with hash 182931767, now seen corresponding path program 1 times [2021-11-03 04:34:22,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:34:22,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376593716] [2021-11-03 04:34:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:22,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:34:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:23,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:34:23,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376593716] [2021-11-03 04:34:23,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376593716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:23,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:23,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:34:23,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019455626] [2021-11-03 04:34:23,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:34:23,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:34:23,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:34:23,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:34:23,009 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:23,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:23,185 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2021-11-03 04:34:23,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:34:23,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-03 04:34:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:23,192 INFO L225 Difference]: With dead ends: 68 [2021-11-03 04:34:23,192 INFO L226 Difference]: Without dead ends: 68 [2021-11-03 04:34:23,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:34:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-03 04:34:23,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2021-11-03 04:34:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 61 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2021-11-03 04:34:23,215 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 5 [2021-11-03 04:34:23,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:23,215 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2021-11-03 04:34:23,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2021-11-03 04:34:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:34:23,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:23,218 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:34:23,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:34:23,221 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-03 04:34:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash 182931768, now seen corresponding path program 1 times [2021-11-03 04:34:23,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:34:23,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399298580] [2021-11-03 04:34:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:23,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:34:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:23,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:34:23,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399298580] [2021-11-03 04:34:23,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399298580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:23,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:23,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:34:23,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504776748] [2021-11-03 04:34:23,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:34:23,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:34:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:34:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:34:23,330 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:23,458 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2021-11-03 04:34:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:34:23,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-03 04:34:23,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:23,460 INFO L225 Difference]: With dead ends: 72 [2021-11-03 04:34:23,461 INFO L226 Difference]: Without dead ends: 72 [2021-11-03 04:34:23,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:34:23,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-03 04:34:23,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2021-11-03 04:34:23,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.75) internal successors, (77), 66 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2021-11-03 04:34:23,467 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 5 [2021-11-03 04:34:23,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:23,468 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2021-11-03 04:34:23,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:23,468 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2021-11-03 04:34:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:34:23,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:23,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:23,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:34:23,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-03 04:34:23,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash -593201859, now seen corresponding path program 1 times [2021-11-03 04:34:23,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:34:23,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661381356] [2021-11-03 04:34:23,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:23,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:34:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:34:23,492 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:34:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:34:23,534 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:34:23,534 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:34:23,536 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK [2021-11-03 04:34:23,537 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-11-03 04:34:23,538 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-11-03 04:34:23,538 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-11-03 04:34:23,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-11-03 04:34:23,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-11-03 04:34:23,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-11-03 04:34:23,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-11-03 04:34:23,540 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-11-03 04:34:23,540 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-11-03 04:34:23,540 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-11-03 04:34:23,541 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-11-03 04:34:23,541 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-11-03 04:34:23,541 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-11-03 04:34:23,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-11-03 04:34:23,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-11-03 04:34:23,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-11-03 04:34:23,542 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-11-03 04:34:23,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-11-03 04:34:23,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-11-03 04:34:23,543 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-11-03 04:34:23,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-11-03 04:34:23,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-11-03 04:34:23,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-11-03 04:34:23,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-11-03 04:34:23,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-11-03 04:34:23,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-11-03 04:34:23,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-11-03 04:34:23,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-11-03 04:34:23,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-11-03 04:34:23,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:34:23,550 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-03 04:34:23,553 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:34:23,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:34:23 BoogieIcfgContainer [2021-11-03 04:34:23,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:34:23,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:34:23,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:34:23,575 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:34:23,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:34:22" (3/4) ... [2021-11-03 04:34:23,578 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:34:23,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:34:23,580 INFO L168 Benchmark]: Toolchain (without parser) took 2545.11 ms. Allocated memory is still 111.1 MB. Free memory was 69.3 MB in the beginning and 54.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:23,581 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 111.1 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:34:23,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.70 ms. Allocated memory is still 111.1 MB. Free memory was 69.1 MB in the beginning and 79.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:23,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.13 ms. Allocated memory is still 111.1 MB. Free memory was 79.8 MB in the beginning and 77.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:23,583 INFO L168 Benchmark]: Boogie Preprocessor took 60.42 ms. Allocated memory is still 111.1 MB. Free memory was 77.7 MB in the beginning and 76.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:34:23,583 INFO L168 Benchmark]: RCFGBuilder took 789.32 ms. Allocated memory is still 111.1 MB. Free memory was 76.4 MB in the beginning and 56.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:23,584 INFO L168 Benchmark]: TraceAbstraction took 1138.52 ms. Allocated memory is still 111.1 MB. Free memory was 55.9 MB in the beginning and 55.3 MB in the end (delta: 599.0 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:23,585 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 111.1 MB. Free memory was 55.3 MB in the beginning and 54.7 MB in the end (delta: 574.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:34:23,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 111.1 MB. Free memory is still 86.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 482.70 ms. Allocated memory is still 111.1 MB. Free memory was 69.1 MB in the beginning and 79.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.13 ms. Allocated memory is still 111.1 MB. Free memory was 79.8 MB in the beginning and 77.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.42 ms. Allocated memory is still 111.1 MB. Free memory was 77.7 MB in the beginning and 76.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 789.32 ms. Allocated memory is still 111.1 MB. Free memory was 76.4 MB in the beginning and 56.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1138.52 ms. Allocated memory is still 111.1 MB. Free memory was 55.9 MB in the beginning and 55.3 MB in the end (delta: 599.0 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.47 ms. Allocated memory is still 111.1 MB. Free memory was 55.3 MB in the beginning and 54.7 MB in the end (delta: 574.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND TRUE a->h == 3 [L555] return 0; - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 188 SDslu, 27 SDs, 0 SdLazy, 136 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=3, InterpolantAutomatonStates: 10, 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, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 59 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:34:23,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/splice-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:34:26,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:34:26,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:34:26,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:34:26,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:34:26,303 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:34:26,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:34:26,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:34:26,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:34:26,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:34:26,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:34:26,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:34:26,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:34:26,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:34:26,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:34:26,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:34:26,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:34:26,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:34:26,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:34:26,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:34:26,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:34:26,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:34:26,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:34:26,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:34:26,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:34:26,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:34:26,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:34:26,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:34:26,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:34:26,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:34:26,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:34:26,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:34:26,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:34:26,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:34:26,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:34:26,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:34:26,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:34:26,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:34:26,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:34:26,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:34:26,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:34:26,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:34:26,427 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:34:26,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:34:26,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:34:26,429 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:34:26,430 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:34:26,430 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:34:26,430 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:34:26,430 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:34:26,431 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:34:26,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:34:26,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:34:26,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:34:26,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:34:26,434 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:34:26,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:34:26,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:34:26,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:34:26,435 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:34:26,435 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:34:26,435 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:34:26,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:34:26,436 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:34:26,436 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:34:26,436 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:34:26,436 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:34:26,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:34:26,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:34:26,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:34:26,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:34:26,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:34:26,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:34:26,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:34:26,439 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:34:26,439 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:34:26,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:34:26,440 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:34:26,440 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 098fc4cb5d15cb305e8d98bf2e1c69b111d102681b51dec68ae720515d6f30bc [2021-11-03 04:34:26,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:34:26,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:34:26,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:34:26,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:34:26,932 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:34:26,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/list-properties/splice-2.i [2021-11-03 04:34:27,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data/b9eeabd3e/579d8c7f84184f2e8d1c210eadb21e90/FLAG5ed747b2c [2021-11-03 04:34:27,631 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:34:27,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/sv-benchmarks/c/list-properties/splice-2.i [2021-11-03 04:34:27,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data/b9eeabd3e/579d8c7f84184f2e8d1c210eadb21e90/FLAG5ed747b2c [2021-11-03 04:34:27,911 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/data/b9eeabd3e/579d8c7f84184f2e8d1c210eadb21e90 [2021-11-03 04:34:27,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:34:27,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:34:27,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:34:27,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:34:27,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:34:27,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:34:27" (1/1) ... [2021-11-03 04:34:27,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c34564b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:27, skipping insertion in model container [2021-11-03 04:34:27,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:34:27" (1/1) ... [2021-11-03 04:34:27,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:34:27,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:34:28,370 WARN L228 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_29f84fc5-b966-4045-ae57-6058cb0323f7/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-03 04:34:28,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:34:28,400 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:34:28,476 WARN L228 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_29f84fc5-b966-4045-ae57-6058cb0323f7/sv-benchmarks/c/list-properties/splice-2.i[23721,23734] [2021-11-03 04:34:28,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:34:28,534 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:34:28,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28 WrapperNode [2021-11-03 04:34:28,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:34:28,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:34:28,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:34:28,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:34:28,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:34:28,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:34:28,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:34:28,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:34:28,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:34:28,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:34:28,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:34:28,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:34:28,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (1/1) ... [2021-11-03 04:34:28,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:34:28,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:34:28,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:34:28,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:34:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:34:28,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:34:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:34:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:34:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:34:28,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:34:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:34:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:34:28,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:34:29,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:34:29,439 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-03 04:34:29,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:34:29 BoogieIcfgContainer [2021-11-03 04:34:29,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:34:29,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:34:29,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:34:29,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:34:29,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:34:27" (1/3) ... [2021-11-03 04:34:29,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44776d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:34:29, skipping insertion in model container [2021-11-03 04:34:29,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:34:28" (2/3) ... [2021-11-03 04:34:29,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44776d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:34:29, skipping insertion in model container [2021-11-03 04:34:29,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:34:29" (3/3) ... [2021-11-03 04:34:29,450 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-2.i [2021-11-03 04:34:29,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:34:29,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-03 04:34:29,517 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:34:29,524 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:34:29,524 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-03 04:34:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 45 states have (on average 2.0) internal successors, (90), 75 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:34:29,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:29,560 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:34:29,561 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-03 04:34:29,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash 889599241, now seen corresponding path program 1 times [2021-11-03 04:34:29,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:29,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962134607] [2021-11-03 04:34:29,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:29,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:29,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:29,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:29,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:34:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:29,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:34:29,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:29,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:34:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:29,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:29,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:29,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962134607] [2021-11-03 04:34:29,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962134607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:29,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:29,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:34:29,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650713902] [2021-11-03 04:34:29,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:34:29,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:34:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:34:30,000 INFO L87 Difference]: Start difference. First operand has 76 states, 45 states have (on average 2.0) internal successors, (90), 75 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:30,363 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2021-11-03 04:34:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:34:30,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-11-03 04:34:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:30,373 INFO L225 Difference]: With dead ends: 84 [2021-11-03 04:34:30,373 INFO L226 Difference]: Without dead ends: 78 [2021-11-03 04:34:30,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:34:30,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-03 04:34:30,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2021-11-03 04:34:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2021-11-03 04:34:30,409 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 6 [2021-11-03 04:34:30,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:30,409 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2021-11-03 04:34:30,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:30,410 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2021-11-03 04:34:30,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:34:30,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:30,410 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:34:30,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:30,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:30,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-03 04:34:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:30,622 INFO L85 PathProgramCache]: Analyzing trace with hash 889599242, now seen corresponding path program 1 times [2021-11-03 04:34:30,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:30,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924030040] [2021-11-03 04:34:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:30,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:30,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:30,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:30,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:34:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:30,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:34:30,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:30,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:34:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:30,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:31,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:31,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924030040] [2021-11-03 04:34:31,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924030040] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:31,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:31,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:34:31,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851150197] [2021-11-03 04:34:31,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:34:31,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:31,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:34:31,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:34:31,022 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:31,538 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2021-11-03 04:34:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:34:31,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 6 [2021-11-03 04:34:31,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:31,540 INFO L225 Difference]: With dead ends: 88 [2021-11-03 04:34:31,541 INFO L226 Difference]: Without dead ends: 88 [2021-11-03 04:34:31,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:34:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-03 04:34:31,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2021-11-03 04:34:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 78 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2021-11-03 04:34:31,553 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 6 [2021-11-03 04:34:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:31,553 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2021-11-03 04:34:31,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2021-11-03 04:34:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:34:31,555 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:31,555 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:31,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:34:31,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:31,758 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 26 more)] === [2021-11-03 04:34:31,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:31,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2102797386, now seen corresponding path program 1 times [2021-11-03 04:34:31,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:31,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228074952] [2021-11-03 04:34:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:31,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:31,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:31,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:34:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:34:31,836 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:34:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:34:31,902 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-03 04:34:31,902 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:34:31,903 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK [2021-11-03 04:34:31,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-11-03 04:34:31,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-11-03 04:34:31,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-11-03 04:34:31,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-11-03 04:34:31,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-11-03 04:34:31,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-11-03 04:34:31,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-11-03 04:34:31,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-11-03 04:34:31,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-11-03 04:34:31,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-11-03 04:34:31,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-11-03 04:34:31,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-11-03 04:34:31,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-11-03 04:34:31,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-11-03 04:34:31,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-11-03 04:34:31,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-11-03 04:34:31,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-11-03 04:34:31,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-11-03 04:34:31,910 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-11-03 04:34:31,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-11-03 04:34:31,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-11-03 04:34:31,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-11-03 04:34:31,911 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-11-03 04:34:31,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-11-03 04:34:31,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-11-03 04:34:31,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-11-03 04:34:31,912 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-11-03 04:34:31,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-11-03 04:34:31,913 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-11-03 04:34:31,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:32,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:32,131 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-03 04:34:32,134 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:34:32,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:34:32 BoogieIcfgContainer [2021-11-03 04:34:32,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:34:32,155 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:34:32,155 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:34:32,155 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:34:32,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:34:29" (3/4) ... [2021-11-03 04:34:32,159 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:34:32,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:34:32,161 INFO L168 Benchmark]: Toolchain (without parser) took 4244.37 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 50.0 MB in the beginning and 63.5 MB in the end (delta: -13.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:32,162 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 67.7 MB in the beginning and 67.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:34:32,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.91 ms. Allocated memory is still 86.0 MB. Free memory was 49.9 MB in the beginning and 62.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:32,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.96 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 60.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:32,171 INFO L168 Benchmark]: Boogie Preprocessor took 36.87 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 58.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:32,172 INFO L168 Benchmark]: RCFGBuilder took 781.86 ms. Allocated memory is still 86.0 MB. Free memory was 58.8 MB in the beginning and 41.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:32,173 INFO L168 Benchmark]: TraceAbstraction took 2711.20 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 41.5 MB in the beginning and 64.0 MB in the end (delta: -22.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:34:32,173 INFO L168 Benchmark]: Witness Printer took 4.63 ms. Allocated memory is still 111.1 MB. Free memory was 64.0 MB in the beginning and 63.5 MB in the end (delta: 555.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:34:32,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 67.7 MB in the beginning and 67.6 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 617.91 ms. Allocated memory is still 86.0 MB. Free memory was 49.9 MB in the beginning and 62.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.96 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 60.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.87 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 58.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 781.86 ms. Allocated memory is still 86.0 MB. Free memory was 58.8 MB in the beginning and 41.9 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2711.20 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 41.5 MB in the beginning and 64.0 MB in the end (delta: -22.6 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.63 ms. Allocated memory is still 111.1 MB. Free memory was 64.0 MB in the beginning and 63.5 MB in the end (delta: 555.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND TRUE a->h == 3 [L555] return 0; - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 575]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 580]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 581]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 30 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 342 SDslu, 49 SDs, 0 SdLazy, 188 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=2, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 3 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:34:32,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29f84fc5-b966-4045-ae57-6058cb0323f7/bin/utaipan-aC7eJsxGYH/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: UNKNOWN: Overapproximated counterexample