./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF --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 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:09,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:09,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:09,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:09,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:09,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:09,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:09,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:09,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:09,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:09,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:09,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:09,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:09,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:09,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:09,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:09,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:09,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:09,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:09,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:09,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:09,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:09,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:09,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:09,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:09,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:09,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:09,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:09,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:09,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:09,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:09,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:09,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:09,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:09,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:09,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:09,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:09,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:09,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:09,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:09,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:09,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-12 22:52:09,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:09,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:09,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:09,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:09,854 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:09,855 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:09,855 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:09,855 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:52:09,855 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:09,855 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:09,856 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:52:09,856 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:52:09,856 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:09,856 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:52:09,857 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:52:09,857 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:52:09,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:52:09,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:52:09,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:09,862 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:52:09,862 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:52:09,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:52:09,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:52:09,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:09,863 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:52:09,864 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:52:09,866 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:52:09,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:09,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:52:09,869 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:52:09,869 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:09,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:09,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:09,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:09,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:09,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:09,872 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:52:09,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:52:09,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:09,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:09,872 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_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2021-11-12 22:52:10,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:10,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:10,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:10,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:10,205 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:10,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-12 22:52:10,273 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data/d3f7774ac/cb8dba5ffdb24a05a3f91f3cfde442e3/FLAG25294a271 [2021-11-12 22:52:10,698 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:10,698 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-12 22:52:10,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data/d3f7774ac/cb8dba5ffdb24a05a3f91f3cfde442e3/FLAG25294a271 [2021-11-12 22:52:11,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data/d3f7774ac/cb8dba5ffdb24a05a3f91f3cfde442e3 [2021-11-12 22:52:11,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:11,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:11,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:11,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:11,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:11,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7171a81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11, skipping insertion in model container [2021-11-12 22:52:11,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:11,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:11,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:11,371 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:52:11,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:11,411 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:52:11,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11 WrapperNode [2021-11-12 22:52:11,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:11,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:11,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:52:11,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:52:11,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:11,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:52:11,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:52:11,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:52:11,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:52:11,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:52:11,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:52:11,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:52:11,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (1/1) ... [2021-11-12 22:52:11,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:11,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:11,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:52:11,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:52:11,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:52:11,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:52:11,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:52:11,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:52:11,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:52:11,818 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:52:11,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:52:11 BoogieIcfgContainer [2021-11-12 22:52:11,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:52:11,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:52:11,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:52:11,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:52:11,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:52:11" (1/3) ... [2021-11-12 22:52:11,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b499ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:52:11, skipping insertion in model container [2021-11-12 22:52:11,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:11" (2/3) ... [2021-11-12 22:52:11,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b499ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:52:11, skipping insertion in model container [2021-11-12 22:52:11,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:52:11" (3/3) ... [2021-11-12 22:52:11,831 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2021-11-12 22:52:11,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:52:11,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-12 22:52:11,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:52:11,891 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 [2021-11-12 22:52:11,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-12 22:52:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 2.1) internal successors, (21), 17 states have internal predecessors, (21), 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) [2021-11-12 22:52:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-12 22:52:11,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:11,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-12 22:52:11,913 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-11-12 22:52:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash 80117, now seen corresponding path program 1 times [2021-11-12 22:52:11,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:11,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837888607] [2021-11-12 22:52:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:11,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:52:12,042 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:52:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:52:12,110 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:52:12,112 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:52:12,113 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (6 of 7 remaining) [2021-11-12 22:52:12,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (5 of 7 remaining) [2021-11-12 22:52:12,119 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (4 of 7 remaining) [2021-11-12 22:52:12,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (3 of 7 remaining) [2021-11-12 22:52:12,120 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (2 of 7 remaining) [2021-11-12 22:52:12,122 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (1 of 7 remaining) [2021-11-12 22:52:12,123 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2021-11-12 22:52:12,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:52:12,128 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:52:12,131 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:52:12,161 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) 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) [2021-11-12 22:52:12,171 INFO L158 Benchmark]: Toolchain (without parser) took 1058.09ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 46.3MB in the beginning and 78.0MB in the end (delta: -31.8MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-11-12 22:52:12,172 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 62.7MB in the beginning and 62.6MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:12,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.29ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 46.0MB in the beginning and 76.8MB in the end (delta: -30.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-12 22:52:12,176 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.99ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 75.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:12,177 INFO L158 Benchmark]: Boogie Preprocessor took 33.93ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 74.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:12,182 INFO L158 Benchmark]: RCFGBuilder took 327.54ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 63.5MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:52:12,183 INFO L158 Benchmark]: TraceAbstraction took 344.73ms. Allocated memory is still 100.7MB. Free memory was 63.0MB in the beginning and 78.0MB in the end (delta: -15.1MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-12 22:52:12,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 62.7MB in the beginning and 62.6MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.29ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 46.0MB in the beginning and 76.8MB in the end (delta: -30.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.99ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 75.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.93ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 74.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 327.54ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 63.5MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 344.73ms. Allocated memory is still 100.7MB. Free memory was 63.0MB in the beginning and 78.0MB in the end (delta: -15.1MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 22:52:12,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/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_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF --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 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:14,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:14,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:14,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:14,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:14,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:14,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:14,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:14,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:14,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:14,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:14,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:14,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:14,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:14,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:14,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:14,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:14,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:14,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:14,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:14,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:14,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:14,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:14,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:14,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:14,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:14,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:14,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:14,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:14,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:14,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:14,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:14,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:14,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:14,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:14,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:14,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:14,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:14,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:14,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:14,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:14,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-12 22:52:14,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:14,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:14,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:14,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:14,932 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:14,932 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:14,933 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:14,933 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:14,933 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:14,933 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:14,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-12 22:52:14,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-12 22:52:14,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:14,937 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:52:14,937 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:52:14,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:52:14,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:52:14,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:14,938 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-12 22:52:14,938 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-12 22:52:14,938 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-12 22:52:14,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:14,939 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:52:14,939 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:52:14,939 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:52:14,939 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:52:14,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:14,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:14,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:52:14,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:14,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:14,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:14,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:14,942 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:52:14,942 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:52:14,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:14,943 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:14,943 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_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d9d4ccd50762f6f94227af6be901e1499ea77136c5cda899a027f7324024a3f [2021-11-12 22:52:15,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:15,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:15,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:15,394 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:15,395 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:15,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-12 22:52:15,476 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data/61e2deeba/d282baafc7034fb984d44d399e808ade/FLAG386409e8d [2021-11-12 22:52:15,939 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:15,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe.c [2021-11-12 22:52:15,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data/61e2deeba/d282baafc7034fb984d44d399e808ade/FLAG386409e8d [2021-11-12 22:52:16,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/data/61e2deeba/d282baafc7034fb984d44d399e808ade [2021-11-12 22:52:16,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:16,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:16,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:16,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:16,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:16,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c89d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16, skipping insertion in model container [2021-11-12 22:52:16,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:16,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:16,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:16,517 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:52:16,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:16,546 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:52:16,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16 WrapperNode [2021-11-12 22:52:16,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:16,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:16,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:52:16,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:52:16,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:16,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:52:16,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:52:16,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:52:16,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:52:16,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:52:16,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:52:16,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:52:16,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:16,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:16,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:52:16,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:52:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:52:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:52:16,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:52:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:52:17,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:52:17,081 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:52:17,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:52:17 BoogieIcfgContainer [2021-11-12 22:52:17,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:52:17,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:52:17,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:52:17,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:52:17,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:52:16" (1/3) ... [2021-11-12 22:52:17,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369db9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:52:17, skipping insertion in model container [2021-11-12 22:52:17,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (2/3) ... [2021-11-12 22:52:17,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369db9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:52:17, skipping insertion in model container [2021-11-12 22:52:17,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:52:17" (3/3) ... [2021-11-12 22:52:17,093 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe.c [2021-11-12 22:52:17,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:52:17,116 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-12 22:52:17,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:52:17,241 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 [2021-11-12 22:52:17,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-12 22:52:17,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 21 states have internal predecessors, (26), 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) [2021-11-12 22:52:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 22:52:17,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:17,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 22:52:17,276 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 3 more)] === [2021-11-12 22:52:17,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:17,290 INFO L85 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2021-11-12 22:52:17,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:17,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227719225] [2021-11-12 22:52:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:17,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:17,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:17,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:17,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:52:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:52:17,422 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:52:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:52:17,489 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 22:52:17,491 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:52:17,492 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (6 of 7 remaining) [2021-11-12 22:52:17,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (5 of 7 remaining) [2021-11-12 22:52:17,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (4 of 7 remaining) [2021-11-12 22:52:17,495 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (3 of 7 remaining) [2021-11-12 22:52:17,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (2 of 7 remaining) [2021-11-12 22:52:17,496 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (1 of 7 remaining) [2021-11-12 22:52:17,497 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2021-11-12 22:52:17,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 22:52:17,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:17,713 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 22:52:17,716 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:52:17,732 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) 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) [2021-11-12 22:52:17,738 INFO L158 Benchmark]: Toolchain (without parser) took 1406.78ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.2MB in the beginning and 45.4MB in the end (delta: -10.2MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-11-12 22:52:17,739 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:17,740 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.37ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 25.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:52:17,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.28ms. Allocated memory is still 56.6MB. Free memory was 25.4MB in the beginning and 40.0MB in the end (delta: -14.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:52:17,749 INFO L158 Benchmark]: Boogie Preprocessor took 52.45ms. Allocated memory is still 56.6MB. Free memory was 40.0MB in the beginning and 38.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:17,751 INFO L158 Benchmark]: RCFGBuilder took 393.09ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 28.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:52:17,752 INFO L158 Benchmark]: TraceAbstraction took 650.12ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 28.0MB in the beginning and 45.4MB in the end (delta: -17.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:17,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 56.6MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.37ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 25.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.28ms. Allocated memory is still 56.6MB. Free memory was 25.4MB in the beginning and 40.0MB in the end (delta: -14.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.45ms. Allocated memory is still 56.6MB. Free memory was 40.0MB in the beginning and 38.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 393.09ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 28.4MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 650.12ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 28.0MB in the beginning and 45.4MB in the end (delta: -17.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 22:52:17,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa58a412-2907-4fd9-982c-d154019aecaf/bin/utaipan-vmNK8stdcF/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: ERROR: ExceptionOrErrorResult: NullPointerException: null