./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS --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 5006077e10b123684af5816f85c68609f620d4e536300995b347b7a57b1efc6a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:36:13,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:36:13,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:36:13,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:36:13,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:36:13,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:36:13,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:36:13,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:36:13,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:36:13,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:36:13,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:36:13,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:36:13,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:36:13,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:36:13,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:36:13,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:36:13,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:36:13,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:36:13,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:36:13,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:36:13,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:36:13,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:36:13,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:36:13,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:36:13,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:36:13,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:36:13,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:36:13,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:36:13,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:36:13,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:36:13,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:36:13,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:36:13,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:36:13,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:36:13,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:36:13,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:36:13,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:36:13,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:36:13,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:36:13,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:36:13,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:36:13,426 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 08:36:13,483 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:36:13,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:36:13,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:36:13,484 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:36:13,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:36:13,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:36:13,486 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:36:13,486 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:36:13,487 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:36:13,487 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:36:13,488 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:36:13,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:36:13,489 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:36:13,489 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:36:13,489 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:36:13,490 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:36:13,490 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:36:13,490 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:36:13,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 08:36:13,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 08:36:13,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:36:13,492 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:36:13,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:36:13,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:36:13,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:36:13,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:36:13,493 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 08:36:13,493 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 08:36:13,493 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 08:36:13,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:36:13,494 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:36:13,494 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:36:13,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:36:13,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:36:13,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:36:13,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:13,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:36:13,496 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:36:13,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:36:13,496 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:36:13,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:36:13,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:36:13,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5006077e10b123684af5816f85c68609f620d4e536300995b347b7a57b1efc6a [2022-11-19 08:36:13,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:36:13,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:36:13,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:36:13,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:36:13,858 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:36:13,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/memsafety-ext3/scopes1.c [2022-11-19 08:36:13,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/data/816f4b61f/11f9f9a06d274a28956006edf4385603/FLAG23456fac9 [2022-11-19 08:36:14,504 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:36:14,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/sv-benchmarks/c/memsafety-ext3/scopes1.c [2022-11-19 08:36:14,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/data/816f4b61f/11f9f9a06d274a28956006edf4385603/FLAG23456fac9 [2022-11-19 08:36:14,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/data/816f4b61f/11f9f9a06d274a28956006edf4385603 [2022-11-19 08:36:14,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:36:14,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:36:14,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:14,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:36:14,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:36:14,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:14" (1/1) ... [2022-11-19 08:36:14,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ff78cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:14, skipping insertion in model container [2022-11-19 08:36:14,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:36:14" (1/1) ... [2022-11-19 08:36:14,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:36:14,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:36:15,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:15,112 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:36:15,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:36:15,177 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:36:15,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15 WrapperNode [2022-11-19 08:36:15,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:36:15,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:15,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:36:15,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:36:15,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,227 INFO L138 Inliner]: procedures = 9, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-19 08:36:15,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:36:15,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:36:15,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:36:15,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:36:15,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,267 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:36:15,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:36:15,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:36:15,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:36:15,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (1/1) ... [2022-11-19 08:36:15,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:36:15,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:36:15,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:36:15,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:36:15,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:36:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:36:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:36:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:36:15,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:36:15,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:36:15,485 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:36:15,487 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:36:15,632 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:36:15,659 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:36:15,659 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:36:15,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:15 BoogieIcfgContainer [2022-11-19 08:36:15,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:36:15,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:36:15,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:36:15,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:36:15,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:36:14" (1/3) ... [2022-11-19 08:36:15,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce31bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:36:15, skipping insertion in model container [2022-11-19 08:36:15,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:36:15" (2/3) ... [2022-11-19 08:36:15,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce31bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:36:15, skipping insertion in model container [2022-11-19 08:36:15,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:15" (3/3) ... [2022-11-19 08:36:15,674 INFO L112 eAbstractionObserver]: Analyzing ICFG scopes1.c [2022-11-19 08:36:15,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:36:15,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-19 08:36:15,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:36:15,766 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d325e60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:36:15,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-19 08:36:15,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 4 states have (on average 2.25) internal successors, (9), 9 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:36:15,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 08:36:15,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:36:15,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 08:36:15,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2022-11-19 08:36:15,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:36:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1430, now seen corresponding path program 1 times [2022-11-19 08:36:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:36:15,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084876171] [2022-11-19 08:36:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:36:15,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:36:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:36:15,931 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:36:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:36:15,974 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:36:15,977 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:36:15,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2022-11-19 08:36:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-11-19 08:36:15,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2022-11-19 08:36:15,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 5 remaining) [2022-11-19 08:36:15,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2022-11-19 08:36:15,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:36:15,990 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 08:36:15,997 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:36:16,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:36:16 BoogieIcfgContainer [2022-11-19 08:36:16,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:36:16,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:36:16,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:36:16,021 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:36:16,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:36:15" (3/4) ... [2022-11-19 08:36:16,024 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 08:36:16,065 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:36:16,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:36:16,067 INFO L158 Benchmark]: Toolchain (without parser) took 1215.53ms. Allocated memory is still 136.3MB. Free memory was 100.0MB in the beginning and 81.0MB in the end (delta: 19.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-11-19 08:36:16,068 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 136.3MB. Free memory was 106.8MB in the beginning and 106.7MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:16,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.62ms. Allocated memory is still 136.3MB. Free memory was 99.7MB in the beginning and 111.2MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:36:16,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.80ms. Allocated memory is still 136.3MB. Free memory was 111.2MB in the beginning and 109.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:36:16,070 INFO L158 Benchmark]: Boogie Preprocessor took 42.74ms. Allocated memory is still 136.3MB. Free memory was 109.9MB in the beginning and 108.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:36:16,071 INFO L158 Benchmark]: RCFGBuilder took 390.35ms. Allocated memory is still 136.3MB. Free memory was 108.2MB in the beginning and 97.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:36:16,072 INFO L158 Benchmark]: TraceAbstraction took 354.24ms. Allocated memory is still 136.3MB. Free memory was 96.5MB in the beginning and 82.7MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:36:16,073 INFO L158 Benchmark]: Witness Printer took 45.81ms. Allocated memory is still 136.3MB. Free memory was 82.7MB in the beginning and 81.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:36:16,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 136.3MB. Free memory was 106.8MB in the beginning and 106.7MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.62ms. Allocated memory is still 136.3MB. Free memory was 99.7MB in the beginning and 111.2MB in the end (delta: -11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.80ms. Allocated memory is still 136.3MB. Free memory was 111.2MB in the beginning and 109.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.74ms. Allocated memory is still 136.3MB. Free memory was 109.9MB in the beginning and 108.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 390.35ms. Allocated memory is still 136.3MB. Free memory was 108.2MB in the beginning and 97.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 354.24ms. Allocated memory is still 136.3MB. Free memory was 96.5MB in the beginning and 82.7MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 45.81ms. Allocated memory is still 136.3MB. Free memory was 82.7MB in the beginning and 81.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L4] int *myPointerA = ((void*) 0); [L5] int *myPointerB = ((void*) 0); [L8] int myNumberA = 7; [L9] myPointerA = &myNumberA [L8] int myNumberA = 7; [L13] int myNumberB = 3; [L14] myPointerB = &myNumberB VAL [myNumberB={2:0}, myPointerA={5:0}, myPointerB={2:0}] [L16] \read(*myPointerA) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 3]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 08:36:16,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b13c23e-ed41-406a-bbef-75df2dfe0963/bin/utaipan-I9t0OCRTmS/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)