./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/simple-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/list-properties/simple-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 12:49:31,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 12:49:31,802 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2024-11-12 12:49:31,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 12:49:31,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 12:49:31,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 12:49:31,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 12:49:31,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 12:49:31,843 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 12:49:31,844 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 12:49:31,846 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 12:49:31,846 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 12:49:31,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 12:49:31,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 12:49:31,848 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 12:49:31,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 12:49:31,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 12:49:31,849 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 12:49:31,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 12:49:31,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 12:49:31,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 12:49:31,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 12:49:31,851 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 12:49:31,852 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 12:49:31,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 12:49:31,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 12:49:31,853 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 12:49:31,853 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 12:49:31,853 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 12:49:31,854 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 12:49:31,854 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 12:49:31,854 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 12:49:31,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 12:49:31,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 12:49:31,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 12:49:31,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 12:49:31,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:49:31,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 12:49:31,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 12:49:31,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 12:49:31,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 12:49:31,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 12:49:31,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 12:49:31,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 12:49:31,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 12:49:31,859 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8519f8a7c8757a31f412eb366ebcbc8dd5e899d9ff0dd6bfc4f50c36dfb89b [2024-11-12 12:49:32,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 12:49:32,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 12:49:32,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 12:49:32,131 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 12:49:32,132 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 12:49:32,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple-1.i [2024-11-12 12:49:33,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 12:49:33,845 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 12:49:33,846 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple-1.i [2024-11-12 12:49:33,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92ec23b9/247293504691493bab73de8235ea20bb/FLAG9f073cb93 [2024-11-12 12:49:34,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92ec23b9/247293504691493bab73de8235ea20bb [2024-11-12 12:49:34,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 12:49:34,219 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 12:49:34,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 12:49:34,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 12:49:34,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 12:49:34,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3592b86f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34, skipping insertion in model container [2024-11-12 12:49:34,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,283 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 12:49:34,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:49:34,716 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 12:49:34,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:49:34,800 INFO L204 MainTranslator]: Completed translation [2024-11-12 12:49:34,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34 WrapperNode [2024-11-12 12:49:34,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 12:49:34,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 12:49:34,803 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 12:49:34,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 12:49:34,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,855 INFO L138 Inliner]: procedures = 124, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-12 12:49:34,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 12:49:34,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 12:49:34,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 12:49:34,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 12:49:34,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,871 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,889 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-12 12:49:34,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 12:49:34,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 12:49:34,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 12:49:34,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 12:49:34,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (1/1) ... [2024-11-12 12:49:34,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:49:34,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:49:34,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 12:49:34,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 12:49:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-12 12:49:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-12 12:49:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 12:49:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 12:49:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 12:49:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 12:49:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 12:49:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 12:49:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 12:49:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 12:49:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 12:49:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 12:49:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 12:49:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 12:49:35,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 12:49:35,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 12:49:35,190 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 12:49:35,197 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 12:49:35,225 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-12 12:49:35,320 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-12 12:49:35,320 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 12:49:35,335 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 12:49:35,335 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 12:49:35,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:35 BoogieIcfgContainer [2024-11-12 12:49:35,336 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 12:49:35,338 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 12:49:35,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 12:49:35,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 12:49:35,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:49:34" (1/3) ... [2024-11-12 12:49:35,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9a6d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:35, skipping insertion in model container [2024-11-12 12:49:35,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:34" (2/3) ... [2024-11-12 12:49:35,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9a6d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:35, skipping insertion in model container [2024-11-12 12:49:35,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:35" (3/3) ... [2024-11-12 12:49:35,345 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-1.i [2024-11-12 12:49:35,359 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 12:49:35,360 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 12:49:35,398 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:49:35,404 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@860ac6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:49:35,404 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-12 12:49:35,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-12 12:49:35,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:49:35,414 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:49:35,414 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-12 12:49:35,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:49:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2081460861, now seen corresponding path program 1 times [2024-11-12 12:49:35,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:49:35,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611543797] [2024-11-12 12:49:35,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:49:35,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:49:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:49:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:49:35,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:49:35,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611543797] [2024-11-12 12:49:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611543797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:49:35,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:49:35,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:49:35,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283035998] [2024-11-12 12:49:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:49:35,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 12:49:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:49:35,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 12:49:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 12:49:35,724 INFO L87 Difference]: Start difference. First operand has 26 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:49:35,737 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-12 12:49:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 12:49:35,739 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-12 12:49:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:49:35,745 INFO L225 Difference]: With dead ends: 25 [2024-11-12 12:49:35,745 INFO L226 Difference]: Without dead ends: 19 [2024-11-12 12:49:35,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 12:49:35,750 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 12:49:35,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 12:49:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-12 12:49:35,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-12 12:49:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-12 12:49:35,790 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2024-11-12 12:49:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:49:35,790 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-12 12:49:35,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-12 12:49:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-12 12:49:35,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:49:35,795 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:49:35,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 12:49:35,796 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-12 12:49:35,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:49:35,798 INFO L85 PathProgramCache]: Analyzing trace with hash -342476303, now seen corresponding path program 1 times [2024-11-12 12:49:35,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:49:35,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335341589] [2024-11-12 12:49:35,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:49:35,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:49:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:49:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:49:36,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:49:36,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335341589] [2024-11-12 12:49:36,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335341589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:49:36,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:49:36,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 12:49:36,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492330221] [2024-11-12 12:49:36,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:49:36,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 12:49:36,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:49:36,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 12:49:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 12:49:36,010 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:49:36,064 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2024-11-12 12:49:36,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 12:49:36,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-12 12:49:36,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:49:36,065 INFO L225 Difference]: With dead ends: 31 [2024-11-12 12:49:36,066 INFO L226 Difference]: Without dead ends: 31 [2024-11-12 12:49:36,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 12:49:36,067 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 12:49:36,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 12:49:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-12 12:49:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2024-11-12 12:49:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-12 12:49:36,074 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2024-11-12 12:49:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:49:36,075 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-12 12:49:36,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-12 12:49:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-12 12:49:36,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:49:36,076 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:49:36,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 12:49:36,076 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-12 12:49:36,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:49:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1594019156, now seen corresponding path program 1 times [2024-11-12 12:49:36,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:49:36,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659651499] [2024-11-12 12:49:36,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:49:36,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:49:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:49:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:49:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:49:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659651499] [2024-11-12 12:49:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659651499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:49:36,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:49:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 12:49:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194868169] [2024-11-12 12:49:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:49:36,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 12:49:36,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:49:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 12:49:36,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 12:49:36,470 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:49:36,539 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-11-12 12:49:36,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:49:36,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-12 12:49:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:49:36,540 INFO L225 Difference]: With dead ends: 28 [2024-11-12 12:49:36,541 INFO L226 Difference]: Without dead ends: 28 [2024-11-12 12:49:36,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-12 12:49:36,542 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 12:49:36,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 12:49:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-12 12:49:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2024-11-12 12:49:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-12 12:49:36,551 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2024-11-12 12:49:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:49:36,551 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-12 12:49:36,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:49:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-12 12:49:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-12 12:49:36,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:49:36,553 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:49:36,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 12:49:36,554 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-12 12:49:36,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:49:36,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2112631781, now seen corresponding path program 1 times [2024-11-12 12:49:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:49:36,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34574301] [2024-11-12 12:49:36,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:49:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:49:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:49:36,585 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 12:49:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:49:36,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 12:49:36,623 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 12:49:36,625 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2024-11-12 12:49:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2024-11-12 12:49:36,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 12:49:36,630 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-12 12:49:36,669 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 12:49:36,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:49:36 BoogieIcfgContainer [2024-11-12 12:49:36,683 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 12:49:36,684 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 12:49:36,684 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 12:49:36,684 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 12:49:36,685 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:35" (3/4) ... [2024-11-12 12:49:36,685 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-12 12:49:36,748 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 12:49:36,748 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 12:49:36,749 INFO L158 Benchmark]: Toolchain (without parser) took 2529.67ms. Allocated memory is still 172.0MB. Free memory was 102.6MB in the beginning and 50.8MB in the end (delta: 51.8MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2024-11-12 12:49:36,754 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 12:49:36,755 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.98ms. Allocated memory is still 172.0MB. Free memory was 102.4MB in the beginning and 134.7MB in the end (delta: -32.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2024-11-12 12:49:36,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.25ms. Allocated memory is still 172.0MB. Free memory was 134.7MB in the beginning and 133.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 12:49:36,755 INFO L158 Benchmark]: Boogie Preprocessor took 57.98ms. Allocated memory is still 172.0MB. Free memory was 133.3MB in the beginning and 130.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 12:49:36,756 INFO L158 Benchmark]: RCFGBuilder took 420.81ms. Allocated memory is still 172.0MB. Free memory was 130.5MB in the beginning and 117.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-12 12:49:36,756 INFO L158 Benchmark]: TraceAbstraction took 1345.36ms. Allocated memory is still 172.0MB. Free memory was 116.5MB in the beginning and 52.9MB in the end (delta: 63.6MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2024-11-12 12:49:36,756 INFO L158 Benchmark]: Witness Printer took 64.79ms. Allocated memory is still 172.0MB. Free memory was 52.9MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 12:49:36,758 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.98ms. Allocated memory is still 172.0MB. Free memory was 102.4MB in the beginning and 134.7MB in the end (delta: -32.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.25ms. Allocated memory is still 172.0MB. Free memory was 134.7MB in the beginning and 133.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.98ms. Allocated memory is still 172.0MB. Free memory was 133.3MB in the beginning and 130.5MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 420.81ms. Allocated memory is still 172.0MB. Free memory was 130.5MB in the beginning and 117.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1345.36ms. Allocated memory is still 172.0MB. Free memory was 116.5MB in the beginning and 52.9MB in the end (delta: 63.6MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Witness Printer took 64.79ms. Allocated memory is still 172.0MB. Free memory was 52.9MB in the beginning and 50.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; [L536] a->h = 2 [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a VAL [p={-1:0}] [L547] COND TRUE p!=0 [L548] EXPR p->h [L548] COND FALSE !(p->h != 2) [L551] EXPR p->n [L551] p = p->n [L547] COND FALSE !(p!=0) [L553] return 0; VAL [\result=0] - UnprovableResult [Line: 12]: 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 2 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 109 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 55 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2024-11-12 12:49:36,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)