./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 f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/scopes1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5006077e10b123684af5816f85c68609f620d4e536300995b347b7a57b1efc6a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 07:06:42,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 07:06:42,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 07:06:42,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 07:06:42,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 07:06:42,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 07:06:42,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 07:06:42,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 07:06:42,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 07:06:42,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 07:06:42,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 07:06:42,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 07:06:42,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 07:06:42,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 07:06:42,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 07:06:42,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 07:06:42,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 07:06:42,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 07:06:42,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 07:06:42,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 07:06:42,928 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 07:06:42,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 07:06:42,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 07:06:42,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 07:06:42,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 07:06:42,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 07:06:42,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 07:06:42,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 07:06:42,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 07:06:42,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 07:06:42,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 07:06:42,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 07:06:42,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 07:06:42,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 07:06:42,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 07:06:42,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 07:06:42,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 07:06:42,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 07:06:42,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 07:06:42,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 07:06:42,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 07:06:42,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 07:06:42,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-14 07:06:42,966 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 07:06:42,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 07:06:42,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 07:06:42,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 07:06:42,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 07:06:42,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 07:06:42,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 07:06:42,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 07:06:42,969 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 07:06:42,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 07:06:42,969 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 07:06:42,969 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 07:06:42,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 07:06:42,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 07:06:42,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 07:06:42,970 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 07:06:42,970 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 07:06:42,971 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 07:06:42,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 07:06:42,971 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 07:06:42,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 07:06:42,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 07:06:42,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 07:06:42,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 07:06:42,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 07:06:42,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 07:06:42,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 07:06:42,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 07:06:42,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 07:06:42,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 07:06:42,974 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5006077e10b123684af5816f85c68609f620d4e536300995b347b7a57b1efc6a [2022-07-14 07:06:43,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 07:06:43,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 07:06:43,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 07:06:43,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 07:06:43,240 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 07:06:43,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes1.c [2022-07-14 07:06:43,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed54d72d7/73d536ef1a544a95962ae36de3ceb31e/FLAGc1e0cba3b [2022-07-14 07:06:43,733 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 07:06:43,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes1.c [2022-07-14 07:06:43,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed54d72d7/73d536ef1a544a95962ae36de3ceb31e/FLAGc1e0cba3b [2022-07-14 07:06:44,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed54d72d7/73d536ef1a544a95962ae36de3ceb31e [2022-07-14 07:06:44,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 07:06:44,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 07:06:44,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 07:06:44,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 07:06:44,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 07:06:44,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320f6483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44, skipping insertion in model container [2022-07-14 07:06:44,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 07:06:44,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 07:06:44,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 07:06:44,409 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 07:06:44,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 07:06:44,441 INFO L208 MainTranslator]: Completed translation [2022-07-14 07:06:44,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44 WrapperNode [2022-07-14 07:06:44,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 07:06:44,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 07:06:44,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 07:06:44,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 07:06:44,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,481 INFO L137 Inliner]: procedures = 10, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-07-14 07:06:44,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 07:06:44,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 07:06:44,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 07:06:44,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 07:06:44,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 07:06:44,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 07:06:44,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 07:06:44,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 07:06:44,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (1/1) ... [2022-07-14 07:06:44,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 07:06:44,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 07:06:44,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-14 07:06:44,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-14 07:06:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 07:06:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 07:06:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 07:06:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-14 07:06:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 07:06:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 07:06:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 07:06:44,631 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 07:06:44,633 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 07:06:44,733 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 07:06:44,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 07:06:44,738 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 07:06:44,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:06:44 BoogieIcfgContainer [2022-07-14 07:06:44,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 07:06:44,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 07:06:44,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 07:06:44,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 07:06:44,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 07:06:44" (1/3) ... [2022-07-14 07:06:44,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f521068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:06:44, skipping insertion in model container [2022-07-14 07:06:44,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 07:06:44" (2/3) ... [2022-07-14 07:06:44,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f521068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:06:44, skipping insertion in model container [2022-07-14 07:06:44,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:06:44" (3/3) ... [2022-07-14 07:06:44,748 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes1.c [2022-07-14 07:06:44,762 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 07:06:44,763 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-07-14 07:06:44,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 07:06:44,809 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@683e03b5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7144f34b [2022-07-14 07:06:44,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-14 07:06:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 12 states have internal predecessors, (12), 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) [2022-07-14 07:06:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-14 07:06:44,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 07:06:44,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-14 07:06:44,821 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)] === [2022-07-14 07:06:44,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 07:06:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-07-14 07:06:44,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 07:06:44,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570767557] [2022-07-14 07:06:44,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 07:06:44,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 07:06:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 07:06:44,924 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 07:06:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 07:06:44,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 07:06:44,958 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-14 07:06:44,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2022-07-14 07:06:44,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-07-14 07:06:44,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2022-07-14 07:06:44,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 5 remaining) [2022-07-14 07:06:44,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2022-07-14 07:06:44,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-14 07:06:44,973 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-14 07:06:44,978 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-14 07:06:44,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 07:06:44 BoogieIcfgContainer [2022-07-14 07:06:44,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-14 07:06:44,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 07:06:44,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 07:06:45,000 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 07:06:45,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:06:44" (3/4) ... [2022-07-14 07:06:45,002 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-14 07:06:45,059 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 07:06:45,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 07:06:45,065 INFO L158 Benchmark]: Toolchain (without parser) took 899.01ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 64.4MB in the beginning and 90.2MB in the end (delta: -25.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 07:06:45,066 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 94.4MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 07:06:45,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.02ms. Allocated memory is still 94.4MB. Free memory was 64.2MB in the beginning and 71.8MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 07:06:45,066 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.47ms. Allocated memory is still 94.4MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 07:06:45,067 INFO L158 Benchmark]: Boogie Preprocessor took 20.46ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 69.4MB in the end (delta: 919.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 07:06:45,068 INFO L158 Benchmark]: RCFGBuilder took 235.52ms. Allocated memory is still 94.4MB. Free memory was 69.4MB in the beginning and 59.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 07:06:45,068 INFO L158 Benchmark]: TraceAbstraction took 254.35ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 59.3MB in the beginning and 90.0MB in the end (delta: -30.7MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-07-14 07:06:45,069 INFO L158 Benchmark]: Witness Printer took 60.62ms. Allocated memory is still 113.2MB. Free memory was 89.9MB in the beginning and 90.2MB in the end (delta: -267.5kB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-07-14 07:06:45,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 94.4MB. Free memory was 49.3MB in the beginning and 49.2MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.02ms. Allocated memory is still 94.4MB. Free memory was 64.2MB in the beginning and 71.8MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.47ms. Allocated memory is still 94.4MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.46ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 69.4MB in the end (delta: 919.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 235.52ms. Allocated memory is still 94.4MB. Free memory was 69.4MB in the beginning and 59.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 254.35ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 59.3MB in the beginning and 90.0MB in the end (delta: -30.7MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Witness Printer took 60.62ms. Allocated memory is still 113.2MB. Free memory was 89.9MB in the beginning and 90.2MB in the end (delta: -267.5kB). Peak memory consumption was 4.4MB. 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={6:0}, myPointerA={5:0}, myPointerB={6:0}] [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, 13 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=13occurred 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, 3 NumberOfCodeBlocks, 3 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! [2022-07-14 07:06:45,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)