./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 9a8b2e8d 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_1.3.100.v20150511-1540.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 95e3931fe811aa62c0e25f30e6d631683a52857f ................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:17:02,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:17:02,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:17:02,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:17:02,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:17:02,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:17:02,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:17:02,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:17:02,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:17:02,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:17:02,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:17:02,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:17:02,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:17:02,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:17:02,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:17:02,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:17:02,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:17:02,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:17:02,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:17:02,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:17:02,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:17:02,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:17:02,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:17:02,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:17:02,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:17:02,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:17:02,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:17:02,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:17:02,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:17:02,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:17:02,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:17:02,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:17:02,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:17:02,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:17:02,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:17:02,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:17:02,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:17:02,318 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:17:02,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:17:02,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:17:02,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:17:02,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 06:17:02,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:17:02,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:17:02,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:17:02,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:17:02,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:17:02,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:17:02,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:17:02,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:17:02,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:17:02,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:17:02,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:17:02,347 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:17:02,347 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:17:02,348 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:17:02,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:17:02,348 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:17:02,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:17:02,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:17:02,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:17:02,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:17:02,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:17:02,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:17:02,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:17:02,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:17:02,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:17:02,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:17:02,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:17:02,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:17:02,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 95e3931fe811aa62c0e25f30e6d631683a52857f [2020-10-20 06:17:02,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:17:02,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:17:02,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:17:02,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:17:02,569 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:17:02,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes1.c [2020-10-20 06:17:02,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf0c84f5/05efd56ecec048f0a9d9c128d5dd8e98/FLAG8991dbc52 [2020-10-20 06:17:03,101 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:17:03,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes1.c [2020-10-20 06:17:03,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf0c84f5/05efd56ecec048f0a9d9c128d5dd8e98/FLAG8991dbc52 [2020-10-20 06:17:03,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bf0c84f5/05efd56ecec048f0a9d9c128d5dd8e98 [2020-10-20 06:17:03,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:17:03,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:17:03,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:03,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:17:03,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:17:03,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:03" (1/1) ... [2020-10-20 06:17:03,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f898f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03, skipping insertion in model container [2020-10-20 06:17:03,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:03" (1/1) ... [2020-10-20 06:17:03,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:17:03,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:17:03,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:03,764 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:17:03,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:03,794 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:17:03,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03 WrapperNode [2020-10-20 06:17:03,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:03,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:17:03,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:17:03,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:17:03,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03" (1/1) ... [2020-10-20 06:17:03,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03" (1/1) ... [2020-10-20 06:17:03,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03" (1/1) ... [2020-10-20 06:17:03,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03" (1/1) ... [2020-10-20 06:17:03,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03" (1/1) ... [2020-10-20 06:17:03,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03" (1/1) ... [2020-10-20 06:17:03,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03" (1/1) ... [2020-10-20 06:17:03,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:17:03,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:17:03,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:17:03,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:17:03,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:17:03,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:17:03,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:17:03,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:17:03,891 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-20 06:17:03,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:17:03,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:17:03,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:17:03,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:17:03,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:17:03,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:17:03,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:17:03,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:17:04,177 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:17:04,177 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-20 06:17:04,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:04 BoogieIcfgContainer [2020-10-20 06:17:04,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:17:04,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:17:04,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:17:04,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:17:04,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:17:03" (1/3) ... [2020-10-20 06:17:04,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e02a6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:04, skipping insertion in model container [2020-10-20 06:17:04,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:03" (2/3) ... [2020-10-20 06:17:04,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e02a6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:04, skipping insertion in model container [2020-10-20 06:17:04,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:04" (3/3) ... [2020-10-20 06:17:04,202 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes1.c [2020-10-20 06:17:04,214 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:17:04,221 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-20 06:17:04,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-20 06:17:04,273 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:17:04,273 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:17:04,273 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:17:04,273 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:17:04,273 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:17:04,274 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:17:04,274 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:17:04,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:17:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-20 06:17:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:17:04,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:04,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:04,303 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:17:04,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:04,309 INFO L82 PathProgramCache]: Analyzing trace with hash -2123086958, now seen corresponding path program 1 times [2020-10-20 06:17:04,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:04,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052831585] [2020-10-20 06:17:04,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:17:04,448 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:17:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:17:04,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:17:04,507 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:17:04,508 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:17:04,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:17:04,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:17:04 BoogieIcfgContainer [2020-10-20 06:17:04,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:17:04,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:17:04,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:17:04,535 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:17:04,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:04" (3/4) ... [2020-10-20 06:17:04,538 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:17:04,585 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:17:04,585 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:17:04,588 INFO L168 Benchmark]: Toolchain (without parser) took 1104.42 ms. Allocated memory was 36.2 MB in the beginning and 46.7 MB in the end (delta: 10.5 MB). Free memory was 16.4 MB in the beginning and 23.6 MB in the end (delta: -7.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:04,589 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 34.1 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 65.7 kB). Peak memory consumption was 65.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:17:04,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.37 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 15.5 MB in the beginning and 26.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:04,591 INFO L168 Benchmark]: Boogie Preprocessor took 33.08 ms. Allocated memory is still 44.6 MB. Free memory was 26.6 MB in the beginning and 25.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:04,592 INFO L168 Benchmark]: RCFGBuilder took 350.41 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 24.9 MB in the beginning and 24.5 MB in the end (delta: 385.3 kB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:04,593 INFO L168 Benchmark]: TraceAbstraction took 346.51 ms. Allocated memory is still 46.7 MB. Free memory was 24.0 MB in the beginning and 25.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:04,594 INFO L168 Benchmark]: Witness Printer took 50.77 ms. Allocated memory is still 46.7 MB. Free memory was 25.6 MB in the beginning and 23.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:04,598 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 34.1 MB. Free memory was 9.9 MB in the beginning and 9.8 MB in the end (delta: 65.7 kB). Peak memory consumption was 65.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 304.37 ms. Allocated memory was 36.2 MB in the beginning and 44.6 MB in the end (delta: 8.4 MB). Free memory was 15.5 MB in the beginning and 26.6 MB in the end (delta: -11.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 33.08 ms. Allocated memory is still 44.6 MB. Free memory was 26.6 MB in the beginning and 25.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 350.41 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 24.9 MB in the beginning and 24.5 MB in the end (delta: 385.3 kB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 346.51 ms. Allocated memory is still 46.7 MB. Free memory was 24.0 MB in the beginning and 25.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. * Witness Printer took 50.77 ms. Allocated memory is still 46.7 MB. Free memory was 25.6 MB in the beginning and 23.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: 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={8:0}, myPointerA={5:0}, myPointerB={8:0}] [L16] \read(*myPointerA) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=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, 7 NumberOfCodeBlocks, 7 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! Received shutdown request...