./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 5fbdf5bf 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 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 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:12:42,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:12:42,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:12:42,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:12:42,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:12:42,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:12:42,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:12:42,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:12:42,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:12:42,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:12:42,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:12:42,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:12:42,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:12:42,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:12:42,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:12:42,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:12:42,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:12:42,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:12:42,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:12:42,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:12:42,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:12:42,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:12:42,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:12:42,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:12:42,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:12:42,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:12:42,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:12:42,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:12:42,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:12:42,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:12:42,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:12:42,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:12:42,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:12:42,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:12:42,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:12:42,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:12:42,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:12:42,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:12:42,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:12:42,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:12:42,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:12:42,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 19:12:42,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:12:42,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:12:42,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:12:42,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:12:42,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:12:42,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:12:42,827 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:12:42,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:12:42,827 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:12:42,828 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:12:42,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:12:42,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:12:42,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:12:42,829 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:12:42,829 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:12:42,829 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:12:42,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:12:42,829 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:12:42,829 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:12:42,830 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:12:42,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:12:42,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:12:42,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:12:42,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:12:42,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:12:42,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:12:42,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 19:12:42,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 19:12:42,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:12:42,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e3931fe811aa62c0e25f30e6d631683a52857f [2021-08-30 19:12:43,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:12:43,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:12:43,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:12:43,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:12:43,083 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:12:43,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes1.c [2021-08-30 19:12:43,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f30e7b92/6d8d9e67970f42148644c3925469f542/FLAG4a35336c3 [2021-08-30 19:12:43,491 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:12:43,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes1.c [2021-08-30 19:12:43,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f30e7b92/6d8d9e67970f42148644c3925469f542/FLAG4a35336c3 [2021-08-30 19:12:43,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f30e7b92/6d8d9e67970f42148644c3925469f542 [2021-08-30 19:12:43,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:12:43,951 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:12:43,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:43,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:12:43,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:12:43,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:43" (1/1) ... [2021-08-30 19:12:43,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb7d9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:43, skipping insertion in model container [2021-08-30 19:12:43,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:43" (1/1) ... [2021-08-30 19:12:43,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:12:43,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:12:44,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:44,050 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 19:12:44,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:12:44,067 INFO L208 MainTranslator]: Completed translation [2021-08-30 19:12:44,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44 WrapperNode [2021-08-30 19:12:44,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:12:44,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 19:12:44,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 19:12:44,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 19:12:44,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44" (1/1) ... [2021-08-30 19:12:44,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44" (1/1) ... [2021-08-30 19:12:44,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44" (1/1) ... [2021-08-30 19:12:44,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44" (1/1) ... [2021-08-30 19:12:44,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44" (1/1) ... [2021-08-30 19:12:44,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44" (1/1) ... [2021-08-30 19:12:44,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44" (1/1) ... [2021-08-30 19:12:44,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 19:12:44,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 19:12:44,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 19:12:44,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 19:12:44,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44" (1/1) ... [2021-08-30 19:12:44,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:12:44,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:12:44,142 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) [2021-08-30 19:12:44,176 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 [2021-08-30 19:12:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 19:12:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 19:12:44,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 19:12:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-08-30 19:12:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 19:12:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 19:12:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 19:12:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 19:12:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 19:12:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 19:12:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 19:12:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 19:12:44,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 19:12:44,310 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-30 19:12:44,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:44 BoogieIcfgContainer [2021-08-30 19:12:44,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 19:12:44,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 19:12:44,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 19:12:44,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 19:12:44,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:12:43" (1/3) ... [2021-08-30 19:12:44,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e2af62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:44, skipping insertion in model container [2021-08-30 19:12:44,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:44" (2/3) ... [2021-08-30 19:12:44,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e2af62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:44, skipping insertion in model container [2021-08-30 19:12:44,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:44" (3/3) ... [2021-08-30 19:12:44,318 INFO L111 eAbstractionObserver]: Analyzing ICFG scopes1.c [2021-08-30 19:12:44,323 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 19:12:44,323 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-08-30 19:12:44,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 19:12:44,368 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 19:12:44,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-30 19:12:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 8 states have (on average 1.625) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 19:12:44,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 19:12:44,387 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:12:44,387 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:12:44,388 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-30 19:12:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:12:44,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2123086958, now seen corresponding path program 1 times [2021-08-30 19:12:44,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 19:12:44,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032309894] [2021-08-30 19:12:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:12:44,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 19:12:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 19:12:44,494 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 19:12:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 19:12:44,544 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 19:12:44,551 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 19:12:44,552 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0REQUIRES_VIOLATION (4 of 5 remaining) [2021-08-30 19:12:44,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (3 of 5 remaining) [2021-08-30 19:12:44,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (2 of 5 remaining) [2021-08-30 19:12:44,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (1 of 5 remaining) [2021-08-30 19:12:44,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2021-08-30 19:12:44,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 19:12:44,563 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 19:12:44,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:12:44 BoogieIcfgContainer [2021-08-30 19:12:44,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 19:12:44,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 19:12:44,580 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 19:12:44,580 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 19:12:44,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:44" (3/4) ... [2021-08-30 19:12:44,582 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 19:12:44,612 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 19:12:44,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 19:12:44,617 INFO L158 Benchmark]: Toolchain (without parser) took 662.76ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.9MB in the beginning and 40.3MB in the end (delta: -10.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:12:44,617 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory was 34.8MB in the beginning and 34.7MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:12:44,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 115.89ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.8MB in the beginning and 43.0MB in the end (delta: -13.2MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2021-08-30 19:12:44,618 INFO L158 Benchmark]: Boogie Preprocessor took 16.34ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 41.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:12:44,618 INFO L158 Benchmark]: RCFGBuilder took 226.21ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 39.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 19:12:44,618 INFO L158 Benchmark]: TraceAbstraction took 265.84ms. Allocated memory is still 62.9MB. Free memory was 38.5MB in the beginning and 42.0MB in the end (delta: -3.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:12:44,619 INFO L158 Benchmark]: Witness Printer took 33.35ms. Allocated memory is still 62.9MB. Free memory was 42.0MB in the beginning and 40.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:12:44,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 52.4MB. Free memory was 34.8MB in the beginning and 34.7MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 115.89ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.8MB in the beginning and 43.0MB in the end (delta: -13.2MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.34ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 41.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 226.21ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 39.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * TraceAbstraction took 265.84ms. Allocated memory is still 62.9MB. Free memory was 38.5MB in the beginning and 42.0MB in the end (delta: -3.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 33.35ms. Allocated memory is still 62.9MB. Free memory was 42.0MB in the beginning and 40.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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={5:0}, myPointerA={8:0}, myPointerB={5:0}] [L16] \read(*myPointerA) - UnprovableResult [Line: 16]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 16]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 16]: 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 3 procedures, 18 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 201.62ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.57ms, AutomataDifference: 0.00ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.43ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.72ms SsaConstructionTime, 42.79ms SatisfiabilityAnalysisTime, 0.00ms 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! [2021-08-30 19:12:44,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...