./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl --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 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:41:03,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:41:03,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:41:03,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:41:03,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:41:03,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:41:03,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:41:03,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:41:03,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:41:03,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:41:03,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:41:03,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:41:03,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:41:03,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:41:03,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:41:03,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:41:03,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:41:03,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:41:03,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:41:03,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:41:03,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:41:03,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:41:03,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:41:03,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:41:03,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:41:03,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:41:03,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:41:03,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:41:03,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:41:03,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:41:03,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:41:03,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:41:03,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:41:03,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:41:03,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:41:03,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:41:03,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:41:03,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:41:03,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:41:03,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:41:03,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:41:03,220 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 17:41:03,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:41:03,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:41:03,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:41:03,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:41:03,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:41:03,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:41:03,291 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:41:03,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:41:03,292 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:41:03,292 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:41:03,293 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:41:03,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:41:03,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:41:03,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:41:03,295 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:41:03,295 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:41:03,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:41:03,296 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:41:03,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:41:03,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:41:03,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:41:03,298 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:41:03,298 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:41:03,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:41:03,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:41:03,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:41:03,301 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:41:03,301 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:41:03,302 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:41:03,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:41:03,302 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:41:03,303 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:41:03,303 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:41:03,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:41:03,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:41:03,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:41:03,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:41:03,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:41:03,305 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:41:03,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:41:03,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:41:03,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:41:03,306 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_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2021-11-23 17:41:03,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:41:03,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:41:03,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:41:03,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:41:03,768 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:41:03,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-11-23 17:41:03,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data/1b92e3456/556f603892fc46208e709b3411658880/FLAGe6adf3894 [2021-11-23 17:41:04,543 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:41:04,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-11-23 17:41:04,561 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data/1b92e3456/556f603892fc46208e709b3411658880/FLAGe6adf3894 [2021-11-23 17:41:04,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data/1b92e3456/556f603892fc46208e709b3411658880 [2021-11-23 17:41:04,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:41:04,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:41:04,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:41:04,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:41:04,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:41:04,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:41:04" (1/1) ... [2021-11-23 17:41:04,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50caaa19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:04, skipping insertion in model container [2021-11-23 17:41:04,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:41:04" (1/1) ... [2021-11-23 17:41:04,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:41:04,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:41:05,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:41:05,350 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:41:05,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:41:05,496 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:41:05,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05 WrapperNode [2021-11-23 17:41:05,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:41:05,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:41:05,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:41:05,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:41:05,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,568 INFO L137 Inliner]: procedures = 168, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 95 [2021-11-23 17:41:05,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:41:05,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:41:05,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:41:05,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:41:05,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:41:05,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:41:05,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:41:05,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:41:05,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:05" (1/1) ... [2021-11-23 17:41:05,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:41:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:41:05,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:41:05,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:41:05,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:41:05,736 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-11-23 17:41:05,737 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-11-23 17:41:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:41:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:41:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:41:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:41:05,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:41:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:41:05,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:41:05,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:41:05,907 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:41:05,909 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:41:06,210 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:41:06,235 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:41:06,239 INFO L158 Benchmark]: Toolchain (without parser) took 1461.80ms. Allocated memory is still 102.8MB. Free memory was 64.4MB in the beginning and 49.6MB in the end (delta: 14.9MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-11-23 17:41:06,240 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:41:06,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 717.69ms. Allocated memory is still 102.8MB. Free memory was 64.2MB in the beginning and 67.2MB in the end (delta: -3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:41:06,242 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.41ms. Allocated memory is still 102.8MB. Free memory was 67.2MB in the beginning and 65.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:41:06,243 INFO L158 Benchmark]: Boogie Preprocessor took 35.37ms. Allocated memory is still 102.8MB. Free memory was 65.1MB in the beginning and 63.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:41:06,244 INFO L158 Benchmark]: RCFGBuilder took 632.01ms. Allocated memory is still 102.8MB. Free memory was 63.4MB in the beginning and 49.6MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 17:41:06,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 717.69ms. Allocated memory is still 102.8MB. Free memory was 64.2MB in the beginning and 67.2MB in the end (delta: -3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.41ms. Allocated memory is still 102.8MB. Free memory was 67.2MB in the beginning and 65.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.37ms. Allocated memory is still 102.8MB. Free memory was 65.1MB in the beginning and 63.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 632.01ms. Allocated memory is still 102.8MB. Free memory was 63.4MB in the beginning and 49.6MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:41:06,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/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_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl --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 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:41:09,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:41:09,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:41:09,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:41:09,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:41:09,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:41:09,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:41:09,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:41:09,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:41:09,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:41:09,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:41:09,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:41:09,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:41:09,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:41:09,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:41:09,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:41:09,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:41:09,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:41:09,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:41:09,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:41:09,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:41:09,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:41:09,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:41:09,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:41:09,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:41:09,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:41:09,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:41:09,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:41:09,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:41:09,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:41:09,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:41:09,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:41:09,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:41:09,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:41:09,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:41:09,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:41:09,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:41:09,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:41:09,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:41:09,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:41:09,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:41:09,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 17:41:09,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:41:09,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:41:09,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:41:09,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:41:09,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:41:09,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:41:09,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:41:09,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:41:09,384 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:41:09,385 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:41:09,385 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:41:09,386 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:41:09,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 17:41:09,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 17:41:09,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:41:09,389 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:41:09,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 17:41:09,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:41:09,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:41:09,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:41:09,391 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 17:41:09,391 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 17:41:09,392 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 17:41:09,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:41:09,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:41:09,392 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:41:09,393 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:41:09,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:41:09,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:41:09,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:41:09,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:41:09,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:41:09,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:41:09,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:41:09,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:41:09,396 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:41:09,396 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:41:09,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:41:09,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:41:09,397 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_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2021-11-23 17:41:09,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:41:09,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:41:09,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:41:09,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:41:09,937 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:41:09,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-11-23 17:41:10,030 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data/2cfea7e40/c763be741ef147b7a02b782434f6d068/FLAGf9a7ca106 [2021-11-23 17:41:10,840 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:41:10,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2021-11-23 17:41:10,863 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data/2cfea7e40/c763be741ef147b7a02b782434f6d068/FLAGf9a7ca106 [2021-11-23 17:41:11,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/data/2cfea7e40/c763be741ef147b7a02b782434f6d068 [2021-11-23 17:41:11,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:41:11,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:41:11,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:41:11,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:41:11,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:41:11,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122cfb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11, skipping insertion in model container [2021-11-23 17:41:11,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:41:11,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:41:11,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:41:11,647 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:41:11,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:41:11,801 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:41:11,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11 WrapperNode [2021-11-23 17:41:11,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:41:11,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:41:11,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:41:11,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:41:11,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,908 INFO L137 Inliner]: procedures = 169, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 96 [2021-11-23 17:41:11,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:41:11,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:41:11,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:41:11,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:41:11,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:11,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:41:11,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:41:11,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:41:11,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:41:11,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (1/1) ... [2021-11-23 17:41:12,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:41:12,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:41:12,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:41:12,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:41:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 17:41:12,082 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2021-11-23 17:41:12,083 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2021-11-23 17:41:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:41:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:41:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:41:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:41:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 17:41:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:41:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:41:12,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:41:12,215 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:41:12,218 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:41:12,715 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:41:12,723 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:41:12,723 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 17:41:12,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:41:12 BoogieIcfgContainer [2021-11-23 17:41:12,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:41:12,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:41:12,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:41:12,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:41:12,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:41:11" (1/3) ... [2021-11-23 17:41:12,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7448cbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:41:12, skipping insertion in model container [2021-11-23 17:41:12,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:41:11" (2/3) ... [2021-11-23 17:41:12,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7448cbf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:41:12, skipping insertion in model container [2021-11-23 17:41:12,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:41:12" (3/3) ... [2021-11-23 17:41:12,746 INFO L111 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2021-11-23 17:41:12,755 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:41:12,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-23 17:41:12,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:41:12,847 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 [2021-11-23 17:41:12,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-23 17:41:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 56 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:41:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:41:12,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:41:12,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:41:12,893 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATION === [parse_inputErr0REQUIRES_VIOLATION, parse_inputErr1REQUIRES_VIOLATION, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2021-11-23 17:41:12,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:41:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash -772449407, now seen corresponding path program 1 times [2021-11-23 17:41:12,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:41:12,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944151229] [2021-11-23 17:41:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:41:12,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:41:12,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:41:12,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:41:12,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:41:13,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:41:13,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:41:13,221 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:41:13,226 INFO L158 Benchmark]: Toolchain (without parser) took 2168.08ms. Allocated memory is still 65.0MB. Free memory was 43.3MB in the beginning and 31.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-11-23 17:41:13,227 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 65.0MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:41:13,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 740.73ms. Allocated memory is still 65.0MB. Free memory was 43.1MB in the beginning and 38.1MB in the end (delta: 5.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:41:13,229 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.36ms. Allocated memory is still 65.0MB. Free memory was 38.1MB in the beginning and 35.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:41:13,229 INFO L158 Benchmark]: Boogie Preprocessor took 69.29ms. Allocated memory is still 65.0MB. Free memory was 35.8MB in the beginning and 34.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:41:13,230 INFO L158 Benchmark]: RCFGBuilder took 748.51ms. Allocated memory is still 65.0MB. Free memory was 34.1MB in the beginning and 40.5MB in the end (delta: -6.5MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-11-23 17:41:13,231 INFO L158 Benchmark]: TraceAbstraction took 489.85ms. Allocated memory is still 65.0MB. Free memory was 40.1MB in the beginning and 31.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 17:41:13,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 65.0MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 740.73ms. Allocated memory is still 65.0MB. Free memory was 43.1MB in the beginning and 38.1MB in the end (delta: 5.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.36ms. Allocated memory is still 65.0MB. Free memory was 38.1MB in the beginning and 35.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.29ms. Allocated memory is still 65.0MB. Free memory was 35.8MB in the beginning and 34.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 748.51ms. Allocated memory is still 65.0MB. Free memory was 34.1MB in the beginning and 40.5MB in the end (delta: -6.5MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 489.85ms. Allocated memory is still 65.0MB. Free memory was 40.1MB in the beginning and 31.3MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:41:13,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1865e218-370f-420d-8026-3a9d4f2c0480/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable