./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/stroeder1_unsafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/stroeder1_unsafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --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 c2abc4818f3da11ae6301593bd436ebe629d07f999067705d8f0ca0fc41bf695 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:56:51,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:56:51,608 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:56:51,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:56:51,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:56:51,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:56:51,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:56:51,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:56:51,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:56:51,643 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:56:51,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:56:51,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:56:51,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:56:51,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:56:51,647 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:56:51,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:56:51,648 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:56:51,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:56:51,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:56:51,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:56:51,651 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:56:51,652 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:56:51,652 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:56:51,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:56:51,653 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:56:51,654 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:56:51,654 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:56:51,655 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:56:51,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:56:51,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:56:51,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:56:51,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:56:51,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:56:51,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:56:51,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:56:51,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:56:51,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:56:51,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:56:51,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:56:51,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:56:51,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:56:51,661 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2abc4818f3da11ae6301593bd436ebe629d07f999067705d8f0ca0fc41bf695 [2023-11-24 21:56:51,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:56:51,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:56:51,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:56:51,925 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:56:51,926 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:56:51,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/array-memsafety/stroeder1_unsafe.c [2023-11-24 21:56:55,168 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:56:55,436 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:56:55,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/sv-benchmarks/c/array-memsafety/stroeder1_unsafe.c [2023-11-24 21:56:55,445 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/data/453feac9b/a70192688b8d4f699bbdd2fa890e51fd/FLAGd75d6be4e [2023-11-24 21:56:55,464 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/data/453feac9b/a70192688b8d4f699bbdd2fa890e51fd [2023-11-24 21:56:55,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:56:55,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:56:55,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:55,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:56:55,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:56:55,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c25fd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55, skipping insertion in model container [2023-11-24 21:56:55,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,514 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:56:55,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:55,702 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:56:55,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:56:55,731 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:56:55,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55 WrapperNode [2023-11-24 21:56:55,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:56:55,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:56:55,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:56:55,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:56:55,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,771 INFO L138 Inliner]: procedures = 8, calls = 4, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2023-11-24 21:56:55,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:56:55,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:56:55,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:56:55,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:56:55,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,809 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 0 writes are split as follows [0]. [2023-11-24 21:56:55,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,824 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,826 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:56:55,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:56:55,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:56:55,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:56:55,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (1/1) ... [2023-11-24 21:56:55,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:56:55,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:56:55,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:56:55,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:56:55,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:56:55,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:56:55,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:56:55,999 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:56:56,001 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:56:56,183 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:56:56,221 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:56:56,221 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:56:56,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:56 BoogieIcfgContainer [2023-11-24 21:56:56,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:56:56,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:56:56,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:56:56,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:56:56,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:56:55" (1/3) ... [2023-11-24 21:56:56,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696ad0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:56:56, skipping insertion in model container [2023-11-24 21:56:56,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:56:55" (2/3) ... [2023-11-24 21:56:56,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696ad0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:56:56, skipping insertion in model container [2023-11-24 21:56:56,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:56" (3/3) ... [2023-11-24 21:56:56,234 INFO L112 eAbstractionObserver]: Analyzing ICFG stroeder1_unsafe.c [2023-11-24 21:56:56,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:56:56,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-24 21:56:56,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:56:56,317 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f6a024a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:56:56,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-24 21:56:56,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 5 states have (on average 2.0) internal successors, (10), 8 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) [2023-11-24 21:56:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:56:56,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:56:56,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:56:56,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:56:56,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:56:56,343 INFO L85 PathProgramCache]: Analyzing trace with hash 57021, now seen corresponding path program 1 times [2023-11-24 21:56:56,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:56:56,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015715058] [2023-11-24 21:56:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:56:56,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:56:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:56:56,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:56:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:56:56,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 21:56:56,583 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:56:56,585 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2023-11-24 21:56:56,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-11-24 21:56:56,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2023-11-24 21:56:56,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:56:56,594 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 21:56:56,600 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:56:56,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:56:56 BoogieIcfgContainer [2023-11-24 21:56:56,625 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:56:56,628 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:56:56,628 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:56:56,628 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:56:56,629 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:56:56" (3/4) ... [2023-11-24 21:56:56,630 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 21:56:56,766 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:56:56,766 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:56:56,768 INFO L158 Benchmark]: Toolchain (without parser) took 1293.37ms. Allocated memory is still 169.9MB. Free memory was 125.4MB in the beginning and 139.0MB in the end (delta: -13.6MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-11-24 21:56:56,768 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 121.6MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:56:56,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.72ms. Allocated memory is still 169.9MB. Free memory was 125.4MB in the beginning and 115.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:56:56,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.39ms. Allocated memory is still 169.9MB. Free memory was 114.9MB in the beginning and 113.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:56:56,778 INFO L158 Benchmark]: Boogie Preprocessor took 63.47ms. Allocated memory is still 169.9MB. Free memory was 113.4MB in the beginning and 111.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:56:56,779 INFO L158 Benchmark]: RCFGBuilder took 385.07ms. Allocated memory is still 169.9MB. Free memory was 111.9MB in the beginning and 101.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:56:56,779 INFO L158 Benchmark]: TraceAbstraction took 399.12ms. Allocated memory is still 169.9MB. Free memory was 100.2MB in the beginning and 87.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 21:56:56,780 INFO L158 Benchmark]: Witness Printer took 138.57ms. Allocated memory is still 169.9MB. Free memory was 87.7MB in the beginning and 139.0MB in the end (delta: -51.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-11-24 21:56:56,787 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 121.6MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.72ms. Allocated memory is still 169.9MB. Free memory was 125.4MB in the beginning and 115.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.39ms. Allocated memory is still 169.9MB. Free memory was 114.9MB in the beginning and 113.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.47ms. Allocated memory is still 169.9MB. Free memory was 113.4MB in the beginning and 111.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 385.07ms. Allocated memory is still 169.9MB. Free memory was 111.9MB in the beginning and 101.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 399.12ms. Allocated memory is still 169.9MB. Free memory was 100.2MB in the beginning and 87.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 138.57ms. Allocated memory is still 169.9MB. Free memory was 87.7MB in the beginning and 139.0MB in the end (delta: -51.3MB). Peak memory consumption was 5.0MB. 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: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L17] int* numbers; [L18] int array_size = __VERIFIER_nondet_int(); [L19] CALL sumOfThirdBytes(numbers, array_size) [L5] int i, sum; [L6] char* p; [L7] sum = 0 [L8] i = 0 VAL [\old(array_size)=2, array_size=2, i=0, numbers={3:-2}, numbers={3:-2}, sum=0] [L8] COND TRUE i < array_size [L9] p = &(numbers[i]) [L10] p = p + 2 VAL [\old(array_size)=2, array_size=2, i=0, numbers={3:-2}, numbers={3:-2}, p={3:0}, sum=0] [L11] \read(*p) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 16]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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! [2023-11-24 21:56:56,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_117daa81-81c9-4727-aeb8-e7c1936c09aa/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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-deref)