./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/bubblesort_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8d31f386 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/array-memsafety/bubblesort_unsafe.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 e06dd3d11d320ef89a2d2c8c527408fda05cf2ff ............................................................................................................................................................................................................................................ 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.multireach-323-8d31f38 [2021-07-06 08:33:37,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 08:33:37,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 08:33:37,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 08:33:37,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 08:33:37,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 08:33:37,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 08:33:37,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 08:33:37,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 08:33:37,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 08:33:37,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 08:33:37,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 08:33:37,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 08:33:37,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 08:33:37,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 08:33:37,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 08:33:37,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 08:33:37,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 08:33:37,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 08:33:37,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 08:33:37,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 08:33:37,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 08:33:37,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 08:33:37,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 08:33:37,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 08:33:37,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 08:33:37,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 08:33:37,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 08:33:37,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 08:33:37,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 08:33:37,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 08:33:37,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 08:33:37,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 08:33:37,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 08:33:37,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 08:33:37,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 08:33:37,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 08:33:37,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 08:33:37,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 08:33:37,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 08:33:37,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 08:33:37,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-07-06 08:33:37,830 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 08:33:37,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 08:33:37,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 08:33:37,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 08:33:37,834 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 08:33:37,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 08:33:37,836 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 08:33:37,836 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 08:33:37,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 08:33:37,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 08:33:37,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 08:33:37,837 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-07-06 08:33:37,837 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-07-06 08:33:37,837 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-07-06 08:33:37,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 08:33:37,838 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-07-06 08:33:37,838 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 08:33:37,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 08:33:37,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 08:33:37,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 08:33:37,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 08:33:37,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 08:33:37,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 08:33:37,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 08:33:37,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 08:33:37,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 08:33:37,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 08:33:37,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e06dd3d11d320ef89a2d2c8c527408fda05cf2ff [2021-07-06 08:33:38,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 08:33:38,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 08:33:38,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 08:33:38,102 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 08:33:38,103 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 08:33:38,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/bubblesort_unsafe.c [2021-07-06 08:33:38,154 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac08bd1c5/b5e02a8bfee94d43a154255589ea47cd/FLAG017599bc7 [2021-07-06 08:33:38,518 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 08:33:38,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/bubblesort_unsafe.c [2021-07-06 08:33:38,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac08bd1c5/b5e02a8bfee94d43a154255589ea47cd/FLAG017599bc7 [2021-07-06 08:33:38,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac08bd1c5/b5e02a8bfee94d43a154255589ea47cd [2021-07-06 08:33:38,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 08:33:38,953 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-06 08:33:38,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 08:33:38,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 08:33:38,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 08:33:38,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2800a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:38, skipping insertion in model container [2021-07-06 08:33:38,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 08:33:38" (1/1) ... [2021-07-06 08:33:38,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 08:33:38,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 08:33:39,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 08:33:39,064 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 08:33:39,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 08:33:39,087 INFO L208 MainTranslator]: Completed translation [2021-07-06 08:33:39,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39 WrapperNode [2021-07-06 08:33:39,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 08:33:39,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 08:33:39,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 08:33:39,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 08:33:39,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39" (1/1) ... [2021-07-06 08:33:39,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39" (1/1) ... [2021-07-06 08:33:39,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39" (1/1) ... [2021-07-06 08:33:39,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39" (1/1) ... [2021-07-06 08:33:39,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39" (1/1) ... [2021-07-06 08:33:39,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39" (1/1) ... [2021-07-06 08:33:39,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39" (1/1) ... [2021-07-06 08:33:39,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 08:33:39,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 08:33:39,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 08:33:39,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 08:33:39,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39" (1/1) ... [2021-07-06 08:33:39,153 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 08:33:39,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 08:33:39,168 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) [2021-07-06 08:33:39,198 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 [2021-07-06 08:33:39,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-07-06 08:33:39,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 08:33:39,213 INFO L138 BoogieDeclarations]: Found implementation of procedure bubbleSort [2021-07-06 08:33:39,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-07-06 08:33:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-07-06 08:33:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure bubbleSort [2021-07-06 08:33:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 08:33:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 08:33:39,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-07-06 08:33:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-07-06 08:33:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 08:33:39,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-06 08:33:39,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 08:33:39,478 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-07-06 08:33:39,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:33:39 BoogieIcfgContainer [2021-07-06 08:33:39,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 08:33:39,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 08:33:39,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 08:33:39,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 08:33:39,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 08:33:38" (1/3) ... [2021-07-06 08:33:39,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184802f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 08:33:39, skipping insertion in model container [2021-07-06 08:33:39,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 08:33:39" (2/3) ... [2021-07-06 08:33:39,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184802f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 08:33:39, skipping insertion in model container [2021-07-06 08:33:39,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:33:39" (3/3) ... [2021-07-06 08:33:39,487 INFO L111 eAbstractionObserver]: Analyzing ICFG bubblesort_unsafe.c [2021-07-06 08:33:39,492 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 08:33:39,492 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-07-06 08:33:39,534 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == bubbleSortErr0REQUIRES_VIOLATION ======== [2021-07-06 08:33:39,542 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 08:33:39,542 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 08:33:39,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-07-06 08:33:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 08:33:39,562 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 08:33:39,563 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 08:33:39,563 INFO L374 AbstractCegarLoop]: === Iteration 1 === [bubbleSortErr0REQUIRES_VIOLATION] === [2021-07-06 08:33:39,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 08:33:39,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1760941198, now seen corresponding path program 1 times [2021-07-06 08:33:39,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 08:33:39,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35853877] [2021-07-06 08:33:39,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 08:33:39,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 08:33:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 08:33:39,654 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 08:33:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 08:33:39,676 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 08:33:39,698 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 08:33:39,700 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-06 08:33:39,703 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 08:33:39,703 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 08:33:39,707 INFO L303 ceAbstractionStarter]: Result for error location bubbleSortErr0REQUIRES_VIOLATION was UNSAFE (1/13) [2021-07-06 08:33:39,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 08:33:39 BoogieIcfgContainer [2021-07-06 08:33:39,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 08:33:39,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 08:33:39,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 08:33:39,722 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 08:33:39,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 08:33:39" (3/4) ... [2021-07-06 08:33:39,724 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-06 08:33:39,756 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 08:33:39,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 08:33:39,758 INFO L168 Benchmark]: Toolchain (without parser) took 803.73 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 46.5 MB in the beginning and 50.8 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:39,758 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 65.0 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 08:33:39,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.34 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 37.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:39,763 INFO L168 Benchmark]: Boogie Preprocessor took 57.87 ms. Allocated memory is still 65.0 MB. Free memory was 37.3 MB in the beginning and 49.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:39,764 INFO L168 Benchmark]: RCFGBuilder took 332.52 ms. Allocated memory is still 65.0 MB. Free memory was 49.2 MB in the beginning and 33.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:39,765 INFO L168 Benchmark]: TraceAbstraction took 240.60 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 52.5 MB in the end (delta: -19.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 08:33:39,765 INFO L168 Benchmark]: Witness Printer took 34.14 ms. Allocated memory is still 79.7 MB. Free memory was 52.5 MB in the beginning and 50.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 08:33:39,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 65.0 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 134.34 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 37.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.87 ms. Allocated memory is still 65.0 MB. Free memory was 37.3 MB in the beginning and 49.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 332.52 ms. Allocated memory is still 65.0 MB. Free memory was 49.2 MB in the beginning and 33.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 240.60 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 52.5 MB in the end (delta: -19.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 34.14 ms. Allocated memory is still 79.7 MB. Free memory was 52.5 MB in the beginning and 50.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. 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: 9]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L19] int* numbers; [L20] int array_size = __VERIFIER_nondet_int(); [L21] CALL bubbleSort(numbers, array_size) VAL [\old(array_size)=2, numbers={6:4}] [L5] int i, j, temp; [L7] i = (array_size - 1) VAL [\old(array_size)=2, array_size=2, i=1, numbers={6:4}, numbers={6:4}] [L7] COND TRUE i >= 0 [L8] j = 1 VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={6:4}, numbers={6:4}] [L8] COND TRUE j <= i VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={6:4}, numbers={6:4}] [L9] numbers[j-1] - StatisticsResult: Ultimate Automizer benchmark data for error location: bubbleSortErr0REQUIRES_VIOLATION CFG has 4 procedures, 41 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 174.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.3ms SsaConstructionTime, 28.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 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! [2021-07-06 08:33:39,798 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...