./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memset3_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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/ldv-memsafety/memset3_-write.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 97106d24c91338d3a7f71605e6dcf95bdff73f56 ...................................................................................................................................................................................................................................................................................... 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-dev-20ed64e [2021-08-27 06:26:17,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:26:17,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:26:17,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:26:17,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:26:17,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:26:17,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:26:17,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:26:18,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:26:18,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:26:18,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:26:18,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:26:18,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:26:18,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:26:18,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:26:18,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:26:18,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:26:18,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:26:18,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:26:18,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:26:18,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:26:18,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:26:18,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:26:18,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:26:18,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:26:18,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:26:18,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:26:18,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:26:18,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:26:18,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:26:18,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:26:18,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:26:18,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:26:18,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:26:18,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:26:18,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:26:18,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:26:18,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:26:18,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:26:18,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:26:18,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:26:18,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:26:18,065 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:26:18,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:26:18,066 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:26:18,066 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:26:18,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:26:18,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:26:18,067 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:26:18,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:26:18,068 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:26:18,068 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:26:18,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:26:18,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:26:18,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:26:18,068 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:26:18,068 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:26:18,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:26:18,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:26:18,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:26:18,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:26:18,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:26:18,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97106d24c91338d3a7f71605e6dcf95bdff73f56 [2021-08-27 06:26:18,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:26:18,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:26:18,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:26:18,343 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:26:18,344 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:26:18,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2021-08-27 06:26:18,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fe51f3c/d516e277fbc04328b29976594d6e764c/FLAG6da6f5348 [2021-08-27 06:26:18,702 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:26:18,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2021-08-27 06:26:18,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fe51f3c/d516e277fbc04328b29976594d6e764c/FLAG6da6f5348 [2021-08-27 06:26:19,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02fe51f3c/d516e277fbc04328b29976594d6e764c [2021-08-27 06:26:19,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:26:19,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:26:19,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:26:19,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:26:19,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:26:19,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b580c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19, skipping insertion in model container [2021-08-27 06:26:19,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:26:19,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:26:19,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:26:19,304 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:26:19,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:26:19,320 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:26:19,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19 WrapperNode [2021-08-27 06:26:19,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:26:19,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:26:19,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:26:19,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:26:19,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:26:19,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:26:19,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:26:19,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:26:19,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19" (1/1) ... [2021-08-27 06:26:19,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:26:19,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:26:19,395 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) [2021-08-27 06:26:19,410 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 [2021-08-27 06:26:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:26:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:26:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:26:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:26:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:26:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:26:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:26:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:26:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:26:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:26:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:26:19,541 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:26:19,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:26:19,623 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-27 06:26:19,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:26:19 BoogieIcfgContainer [2021-08-27 06:26:19,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:26:19,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:26:19,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:26:19,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:26:19,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:26:19" (1/3) ... [2021-08-27 06:26:19,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704c156e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:26:19, skipping insertion in model container [2021-08-27 06:26:19,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:26:19" (2/3) ... [2021-08-27 06:26:19,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704c156e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:26:19, skipping insertion in model container [2021-08-27 06:26:19,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:26:19" (3/3) ... [2021-08-27 06:26:19,629 INFO L111 eAbstractionObserver]: Analyzing ICFG memset3_-write.c [2021-08-27 06:26:19,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:26:19,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-27 06:26:19,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:26:19,661 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 [2021-08-27 06:26:19,661 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-27 06:26:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:26:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 06:26:19,673 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:26:19,673 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:26:19,673 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 06:26:19,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:26:19,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2021-08-27 06:26:19,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:26:19,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740335494] [2021-08-27 06:26:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:26:19,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:26:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 06:26:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:26:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:26:19,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 06:26:19,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740335494] [2021-08-27 06:26:19,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740335494] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 06:26:19,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:26:19,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 06:26:19,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586448779] [2021-08-27 06:26:19,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 06:26:19,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 06:26:19,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 06:26:19,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:26:19,858 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:26:19,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:26:19,893 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-08-27 06:26:19,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 06:26:19,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 06:26:19,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:26:19,898 INFO L225 Difference]: With dead ends: 19 [2021-08-27 06:26:19,898 INFO L226 Difference]: Without dead ends: 16 [2021-08-27 06:26:19,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 06:26:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-08-27 06:26:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-08-27 06:26:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 06:26:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-08-27 06:26:19,923 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-08-27 06:26:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:26:19,924 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-08-27 06:26:19,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 06:26:19,924 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-08-27 06:26:19,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 06:26:19,924 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:26:19,924 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:26:19,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 06:26:19,925 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK] === [2021-08-27 06:26:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:26:19,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2021-08-27 06:26:19,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 06:26:19,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509117626] [2021-08-27 06:26:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:26:19,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 06:26:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:26:19,935 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 06:26:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 06:26:19,950 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 06:26:19,950 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 06:26:19,951 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr1REQUIRES_VIOLATION [2021-08-27 06:26:19,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 06:26:19,953 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:26:19,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 06:26:19,956 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:26:19,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:26:19 BoogieIcfgContainer [2021-08-27 06:26:19,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:26:19,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:26:19,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:26:19,966 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:26:19,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:26:19" (3/4) ... [2021-08-27 06:26:19,967 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 06:26:19,983 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 06:26:19,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:26:19,985 INFO L168 Benchmark]: Toolchain (without parser) took 821.10 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.8 MB in the beginning and 37.7 MB in the end (delta: -7.9 MB). Peak memory consumption was 695.8 kB. Max. memory is 16.1 GB. [2021-08-27 06:26:19,985 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 52.4 MB. Free memory was 34.5 MB in the beginning and 34.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:26:19,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.81 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 32.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-08-27 06:26:19,986 INFO L168 Benchmark]: Boogie Preprocessor took 53.43 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 32.6 MB in the beginning and 46.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:26:19,987 INFO L168 Benchmark]: RCFGBuilder took 248.68 ms. Allocated memory is still 62.9 MB. Free memory was 46.7 MB in the beginning and 35.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 06:26:19,987 INFO L168 Benchmark]: TraceAbstraction took 340.14 ms. Allocated memory is still 62.9 MB. Free memory was 34.6 MB in the beginning and 39.2 MB in the end (delta: -4.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:26:19,987 INFO L168 Benchmark]: Witness Printer took 18.26 ms. Allocated memory is still 62.9 MB. Free memory was 39.2 MB in the beginning and 37.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:26:19,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 52.4 MB. Free memory was 34.5 MB in the beginning and 34.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 154.81 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 32.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.43 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 32.6 MB in the beginning and 46.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 248.68 ms. Allocated memory is still 62.9 MB. Free memory was 46.7 MB in the beginning and 35.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 340.14 ms. Allocated memory is still 62.9 MB. Free memory was 34.6 MB in the beginning and 39.2 MB in the end (delta: -4.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 18.26 ms. Allocated memory is still 62.9 MB. Free memory was 39.2 MB in the beginning and 37.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L26] struct ppp_comp_stats cstats ; [L27] void *point; [L28] point = (void *)(& cstats) VAL [cstats={2:0}, point={2:0}] - UnprovableResult [Line: 29]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 25]: 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 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 299.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.4ms, AutomataDifference: 49.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 6 SDslu, 8 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.4ms SsaConstructionTime, 26.1ms SatisfiabilityAnalysisTime, 77.6ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2021-08-27 06:26:20,013 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...