./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/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_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/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 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:49:19,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:49:19,178 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-24 21:49:19,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:49:19,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:49:19,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:49:19,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:49:19,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:49:19,233 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:49:19,237 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:49:19,238 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:49:19,238 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:49:19,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:49:19,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:49:19,241 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:49:19,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:49:19,242 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:49:19,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:49:19,243 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:49:19,243 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:49:19,244 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:49:19,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:49:19,245 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:49:19,245 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:49:19,246 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:49:19,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:49:19,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:49:19,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:49:19,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:49:19,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:19,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:49:19,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:49:19,250 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:49:19,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:49:19,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:49:19,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:49:19,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:49:19,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:49:19,252 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_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-11-24 21:49:19,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:49:19,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:49:19,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:49:19,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:49:19,601 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:49:19,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-11-24 21:49:22,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:49:23,153 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:49:23,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-11-24 21:49:23,162 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/data/781a9d734/c91119194a7b4ca582f17e10a2615be5/FLAG795673ecf [2023-11-24 21:49:23,177 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/data/781a9d734/c91119194a7b4ca582f17e10a2615be5 [2023-11-24 21:49:23,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:49:23,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:49:23,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:23,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:49:23,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:49:23,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74306b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23, skipping insertion in model container [2023-11-24 21:49:23,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,211 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:49:23,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:23,376 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:49:23,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:23,409 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:49:23,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23 WrapperNode [2023-11-24 21:49:23,410 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:23,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:23,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:49:23,412 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:49:23,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,451 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-24 21:49:23,451 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:23,452 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:49:23,452 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:49:23,452 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:49:23,463 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,479 INFO L175 MemorySlicer]: Split 6 memory accesses to 1 slices as follows [6]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2023-11-24 21:49:23,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:49:23,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:49:23,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:49:23,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:49:23,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (1/1) ... [2023-11-24 21:49:23,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:23,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:23,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:49:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:49:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:49:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-11-24 21:49:23,603 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-11-24 21:49:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:49:23,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:49:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:49:23,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:49:23,713 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:49:23,716 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:49:23,937 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:49:23,967 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:49:23,968 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:49:23,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:23 BoogieIcfgContainer [2023-11-24 21:49:23,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:49:23,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:49:23,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:49:24,000 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:49:24,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:49:23" (1/3) ... [2023-11-24 21:49:24,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65107bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:24, skipping insertion in model container [2023-11-24 21:49:24,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:23" (2/3) ... [2023-11-24 21:49:24,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65107bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:24, skipping insertion in model container [2023-11-24 21:49:24,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:23" (3/3) ... [2023-11-24 21:49:24,005 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-11-24 21:49:24,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:49:24,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-24 21:49:24,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:49:24,082 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;@347fa22d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:49:24,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-24 21:49:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 12 states have (on average 2.25) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:49:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:49:24,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:49:24,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:49:24,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:49:24,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:24,099 INFO L85 PathProgramCache]: Analyzing trace with hash 74840, now seen corresponding path program 1 times [2023-11-24 21:49:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:49:24,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931725963] [2023-11-24 21:49:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:24,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:49:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:49:24,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:49:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:49:24,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 21:49:24,260 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:49:24,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-24 21:49:24,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-24 21:49:24,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-24 21:49:24,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-24 21:49:24,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-24 21:49:24,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-24 21:49:24,264 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-24 21:49:24,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-24 21:49:24,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-24 21:49:24,265 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-11-24 21:49:24,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-11-24 21:49:24,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-11-24 21:49:24,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-11-24 21:49:24,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:49:24,271 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 21:49:24,278 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:49:24,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:49:24 BoogieIcfgContainer [2023-11-24 21:49:24,300 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:49:24,303 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:49:24,303 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:49:24,303 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:49:24,304 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:23" (3/4) ... [2023-11-24 21:49:24,309 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 21:49:24,310 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:49:24,312 INFO L158 Benchmark]: Toolchain (without parser) took 1129.66ms. Allocated memory is still 148.9MB. Free memory was 107.5MB in the beginning and 105.8MB in the end (delta: 1.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2023-11-24 21:49:24,312 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 107.0MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:49:24,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.95ms. Allocated memory is still 148.9MB. Free memory was 107.2MB in the beginning and 97.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:49:24,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.18ms. Allocated memory is still 148.9MB. Free memory was 97.3MB in the beginning and 95.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:49:24,316 INFO L158 Benchmark]: Boogie Preprocessor took 38.53ms. Allocated memory is still 148.9MB. Free memory was 95.8MB in the beginning and 94.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:49:24,317 INFO L158 Benchmark]: RCFGBuilder took 477.93ms. Allocated memory is still 148.9MB. Free memory was 94.2MB in the beginning and 82.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 21:49:24,317 INFO L158 Benchmark]: TraceAbstraction took 327.86ms. Allocated memory is still 148.9MB. Free memory was 81.5MB in the beginning and 105.8MB in the end (delta: -24.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:49:24,318 INFO L158 Benchmark]: Witness Printer took 7.59ms. Allocated memory is still 148.9MB. Free memory was 105.8MB in the beginning and 105.8MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:49:24,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 107.0MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.95ms. Allocated memory is still 148.9MB. Free memory was 107.2MB in the beginning and 97.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.18ms. Allocated memory is still 148.9MB. Free memory was 97.3MB in the beginning and 95.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.53ms. Allocated memory is still 148.9MB. Free memory was 95.8MB in the beginning and 94.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 477.93ms. Allocated memory is still 148.9MB. Free memory was 94.2MB in the beginning and 82.0MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 327.86ms. Allocated memory is still 148.9MB. Free memory was 81.5MB in the beginning and 105.8MB in the end (delta: -24.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.59ms. Allocated memory is still 148.9MB. Free memory was 105.8MB in the beginning and 105.8MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={-1:0}, i=0, upper=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=29occurred 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 could not prove your program: unable to determine feasibility of some traces [2023-11-24 21:49:24,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/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_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/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 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:49:27,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:49:27,435 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-24 21:49:27,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:49:27,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:49:27,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:49:27,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:49:27,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:49:27,501 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:49:27,506 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:49:27,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:49:27,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:49:27,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:49:27,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:49:27,511 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:49:27,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:49:27,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:49:27,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:49:27,512 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:49:27,514 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:49:27,514 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:49:27,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:49:27,515 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:49:27,516 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:49:27,516 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:49:27,516 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:49:27,517 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:49:27,518 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:49:27,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:49:27,519 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:49:27,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:49:27,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:27,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:49:27,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:49:27,522 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:49:27,522 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:49:27,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:49:27,523 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:49:27,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:49:27,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:49:27,524 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:49:27,525 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_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-11-24 21:49:27,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:49:27,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:49:27,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:49:27,993 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:49:27,994 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:49:27,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-11-24 21:49:31,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:49:31,549 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:49:31,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-11-24 21:49:31,556 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/data/fe41359b2/6166eddceff94ceba2814f7084b46b0e/FLAG41df91e8a [2023-11-24 21:49:31,571 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/data/fe41359b2/6166eddceff94ceba2814f7084b46b0e [2023-11-24 21:49:31,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:49:31,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:49:31,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:31,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:49:31,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:49:31,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545a6b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31, skipping insertion in model container [2023-11-24 21:49:31,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,604 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:49:31,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:31,829 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:49:31,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:49:31,870 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:49:31,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31 WrapperNode [2023-11-24 21:49:31,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:49:31,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:31,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:49:31,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:49:31,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,891 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,909 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-11-24 21:49:31,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:49:31,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:49:31,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:49:31,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:49:31,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,938 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,956 INFO L175 MemorySlicer]: Split 6 memory accesses to 1 slices as follows [6]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2023-11-24 21:49:31,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,982 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:31,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:49:31,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:49:31,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:49:31,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:49:31,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (1/1) ... [2023-11-24 21:49:32,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:49:32,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:49:32,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:49:32,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:49:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:49:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:49:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-11-24 21:49:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-11-24 21:49:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:49:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:49:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:49:32,198 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:49:32,200 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:49:32,577 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:49:32,625 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:49:32,625 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:49:32,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:32 BoogieIcfgContainer [2023-11-24 21:49:32,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:49:32,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:49:32,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:49:32,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:49:32,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:49:31" (1/3) ... [2023-11-24 21:49:32,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323aa1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:32, skipping insertion in model container [2023-11-24 21:49:32,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:49:31" (2/3) ... [2023-11-24 21:49:32,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323aa1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:49:32, skipping insertion in model container [2023-11-24 21:49:32,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:32" (3/3) ... [2023-11-24 21:49:32,636 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-11-24 21:49:32,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:49:32,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-24 21:49:32,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:49:32,712 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;@7c203545, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:49:32,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-24 21:49:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 12 states have (on average 2.25) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 21:49:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:49:32,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:49:32,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:49:32,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-24 21:49:32,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:49:32,742 INFO L85 PathProgramCache]: Analyzing trace with hash 74840, now seen corresponding path program 1 times [2023-11-24 21:49:32,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:49:32,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197004679] [2023-11-24 21:49:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:49:32,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:49:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:49:32,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 21:49:32,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 21:49:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:49:32,817 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:49:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:49:32,846 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-24 21:49:32,848 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:49:32,850 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-24 21:49:32,852 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-24 21:49:32,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-24 21:49:32,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-24 21:49:32,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-24 21:49:32,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-24 21:49:32,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-24 21:49:32,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-24 21:49:32,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-24 21:49:32,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-11-24 21:49:32,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-11-24 21:49:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-11-24 21:49:32,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-11-24 21:49:32,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:49:33,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:49:33,063 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 21:49:33,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:49:33,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:49:33 BoogieIcfgContainer [2023-11-24 21:49:33,089 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:49:33,098 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:49:33,098 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:49:33,098 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:49:33,099 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:49:32" (3/4) ... [2023-11-24 21:49:33,101 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 21:49:33,103 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:49:33,104 INFO L158 Benchmark]: Toolchain (without parser) took 1528.12ms. Allocated memory is still 77.6MB. Free memory was 53.7MB in the beginning and 55.6MB in the end (delta: -1.9MB). Peak memory consumption was 160.2kB. Max. memory is 16.1GB. [2023-11-24 21:49:33,104 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:49:33,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.13ms. Allocated memory is still 77.6MB. Free memory was 53.5MB in the beginning and 43.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:49:33,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.73ms. Allocated memory is still 77.6MB. Free memory was 43.4MB in the beginning and 41.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:49:33,107 INFO L158 Benchmark]: Boogie Preprocessor took 81.82ms. Allocated memory is still 77.6MB. Free memory was 41.9MB in the beginning and 40.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:49:33,107 INFO L158 Benchmark]: RCFGBuilder took 631.96ms. Allocated memory is still 77.6MB. Free memory was 39.9MB in the beginning and 46.2MB in the end (delta: -6.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-11-24 21:49:33,108 INFO L158 Benchmark]: TraceAbstraction took 460.99ms. Allocated memory is still 77.6MB. Free memory was 45.3MB in the beginning and 33.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:49:33,109 INFO L158 Benchmark]: Witness Printer took 5.14ms. Allocated memory is still 77.6MB. Free memory was 55.6MB in the beginning and 55.6MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:49:33,112 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.13ms. Allocated memory is still 77.6MB. Free memory was 53.5MB in the beginning and 43.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.73ms. Allocated memory is still 77.6MB. Free memory was 43.4MB in the beginning and 41.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 81.82ms. Allocated memory is still 77.6MB. Free memory was 41.9MB in the beginning and 40.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 631.96ms. Allocated memory is still 77.6MB. Free memory was 39.9MB in the beginning and 46.2MB in the end (delta: -6.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * TraceAbstraction took 460.99ms. Allocated memory is still 77.6MB. Free memory was 45.3MB in the beginning and 33.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 5.14ms. Allocated memory is still 77.6MB. Free memory was 55.6MB in the beginning and 55.6MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={1:0}, i=0, upper=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=29occurred 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 could not prove your program: unable to determine feasibility of some traces [2023-11-24 21:49:33,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb387a3b-d4ca-4cb4-9463-94bfe16fcbad/bin/uautomizer-verify-NlZe1sFDwI/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 Result: UNKNOWN: Overapproximated counterexample