./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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme --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 [2023-11-26 10:42:24,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:24,853 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-26 10:42:24,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:24,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:24,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:24,889 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:24,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:24,890 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:24,891 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:24,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:24,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:24,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:24,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:24,895 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:24,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:24,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:24,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:24,897 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:42:24,898 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:42:24,899 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:42:24,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:24,900 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:42:24,901 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:42:24,902 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:24,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:24,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:24,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:24,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:24,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:24,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:24,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:24,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:42:24,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:42:24,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:24,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:24,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:24,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:24,910 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_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-11-26 10:42:25,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:25,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:25,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:25,272 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:25,273 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:25,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-11-26 10:42:28,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:28,718 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:28,719 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-11-26 10:42:28,726 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/data/626a29711/bbe7c74fcd154bb09100a9f3bee067b6/FLAG11c0825ee [2023-11-26 10:42:28,743 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/data/626a29711/bbe7c74fcd154bb09100a9f3bee067b6 [2023-11-26 10:42:28,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:28,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:28,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:28,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:28,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:28,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:28" (1/1) ... [2023-11-26 10:42:28,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e89f48d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:28, skipping insertion in model container [2023-11-26 10:42:28,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:28" (1/1) ... [2023-11-26 10:42:28,791 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:28,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:28,974 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:28,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:29,007 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:29,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29 WrapperNode [2023-11-26 10:42:29,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:29,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:29,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:29,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:29,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,053 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-26 10:42:29,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:29,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:29,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:29,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:29,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,101 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]. [2023-11-26 10:42:29,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,118 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:29,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:29,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:29,136 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:29,137 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (1/1) ... [2023-11-26 10:42:29,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:29,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:29,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:42:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:42:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-11-26 10:42:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-11-26 10:42:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:42:29,311 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:29,315 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:29,640 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:29,690 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:29,692 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:42:29,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:29 BoogieIcfgContainer [2023-11-26 10:42:29,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:29,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:29,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:29,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:29,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:28" (1/3) ... [2023-11-26 10:42:29,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf769f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:29, skipping insertion in model container [2023-11-26 10:42:29,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:29" (2/3) ... [2023-11-26 10:42:29,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf769f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:29, skipping insertion in model container [2023-11-26 10:42:29,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:29" (3/3) ... [2023-11-26 10:42:29,713 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-11-26 10:42:29,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:29,736 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-26 10:42:29,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:29,815 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;@528ef63d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:29,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 10:42:29,820 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) [2023-11-26 10:42:29,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 10:42:29,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:29,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 10:42:29,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-26 10:42:29,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:29,840 INFO L85 PathProgramCache]: Analyzing trace with hash 74840, now seen corresponding path program 1 times [2023-11-26 10:42:29,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:42:29,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866710596] [2023-11-26 10:42:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:29,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:42:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:29,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:42:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:30,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:42:30,041 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:42:30,043 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-26 10:42:30,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-26 10:42:30,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-26 10:42:30,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-26 10:42:30,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-26 10:42:30,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-26 10:42:30,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-26 10:42:30,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-26 10:42:30,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-26 10:42:30,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-11-26 10:42:30,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-11-26 10:42:30,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-11-26 10:42:30,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-11-26 10:42:30,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:42:30,061 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 10:42:30,066 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:42:30,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:42:30 BoogieIcfgContainer [2023-11-26 10:42:30,086 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:42:30,098 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:42:30,098 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:42:30,099 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:42:30,099 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:29" (3/4) ... [2023-11-26 10:42:30,104 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 10:42:30,105 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:42:30,108 INFO L158 Benchmark]: Toolchain (without parser) took 1359.41ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 79.8MB in the end (delta: 40.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-26 10:42:30,109 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 163.6MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:30,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.36ms. Allocated memory is still 163.6MB. Free memory was 119.6MB in the beginning and 109.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 10:42:30,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.78ms. Allocated memory is still 163.6MB. Free memory was 109.9MB in the beginning and 108.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:42:30,118 INFO L158 Benchmark]: Boogie Preprocessor took 70.13ms. Allocated memory is still 163.6MB. Free memory was 108.4MB in the beginning and 107.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:42:30,119 INFO L158 Benchmark]: RCFGBuilder took 558.15ms. Allocated memory is still 163.6MB. Free memory was 107.0MB in the beginning and 94.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:42:30,121 INFO L158 Benchmark]: TraceAbstraction took 386.40ms. Allocated memory is still 163.6MB. Free memory was 93.7MB in the beginning and 80.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:42:30,121 INFO L158 Benchmark]: Witness Printer took 7.70ms. Allocated memory is still 163.6MB. Free memory was 79.8MB in the beginning and 79.8MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:30,131 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 163.6MB. Free memory is still 136.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.36ms. Allocated memory is still 163.6MB. Free memory was 119.6MB in the beginning and 109.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.78ms. Allocated memory is still 163.6MB. Free memory was 109.9MB in the beginning and 108.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.13ms. Allocated memory is still 163.6MB. Free memory was 108.4MB in the beginning and 107.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 558.15ms. Allocated memory is still 163.6MB. Free memory was 107.0MB in the beginning and 94.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 386.40ms. Allocated memory is still 163.6MB. Free memory was 93.7MB in the beginning and 80.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 7.70ms. Allocated memory is still 163.6MB. Free memory was 79.8MB in the beginning and 79.8MB 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: 0.3s, 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=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 [2023-11-26 10:42:30,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme --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 [2023-11-26 10:42:33,046 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:33,181 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2023-11-26 10:42:33,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:33,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:33,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:33,261 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:33,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:33,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:33,268 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:33,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:33,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:33,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:33,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:33,272 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:33,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:33,273 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:33,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:33,274 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 10:42:33,275 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 10:42:33,275 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 10:42:33,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:33,276 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 10:42:33,277 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 10:42:33,277 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 10:42:33,277 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:42:33,278 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:33,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:33,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:33,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:33,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:33,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:33,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:33,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:33,283 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 10:42:33,283 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 10:42:33,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:33,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:33,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:33,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:33,285 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 10:42:33,286 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_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-11-26 10:42:33,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:33,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:33,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:33,746 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:33,746 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:33,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-11-26 10:42:36,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:37,266 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:37,267 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-11-26 10:42:37,276 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/data/bd093ebd6/9756bde4b6f040aea8347ef84d7a9b4a/FLAG4628f746d [2023-11-26 10:42:37,302 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/data/bd093ebd6/9756bde4b6f040aea8347ef84d7a9b4a [2023-11-26 10:42:37,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:37,310 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:37,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:37,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:37,319 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:37,320 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ab5b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37, skipping insertion in model container [2023-11-26 10:42:37,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,345 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:37,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:37,574 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:37,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:37,613 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:37,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37 WrapperNode [2023-11-26 10:42:37,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:37,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:37,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:37,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:37,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,654 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-11-26 10:42:37,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:37,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:37,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:37,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:37,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,682 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,700 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]. [2023-11-26 10:42:37,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:37,739 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:37,740 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:37,740 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:37,741 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (1/1) ... [2023-11-26 10:42:37,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:37,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:37,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:37,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:42:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 10:42:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-11-26 10:42:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-11-26 10:42:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 10:42:37,935 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:37,937 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:42:38,255 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:42:38,281 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:42:38,281 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:42:38,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:38 BoogieIcfgContainer [2023-11-26 10:42:38,282 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:42:38,284 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:42:38,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:42:38,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:42:38,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:37" (1/3) ... [2023-11-26 10:42:38,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb893f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:38, skipping insertion in model container [2023-11-26 10:42:38,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:37" (2/3) ... [2023-11-26 10:42:38,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb893f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:42:38, skipping insertion in model container [2023-11-26 10:42:38,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:38" (3/3) ... [2023-11-26 10:42:38,291 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-11-26 10:42:38,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:42:38,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-11-26 10:42:38,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:42:38,369 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;@7766d5e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:42:38,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-26 10:42:38,374 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) [2023-11-26 10:42:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 10:42:38,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:42:38,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 10:42:38,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-26 10:42:38,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:42:38,388 INFO L85 PathProgramCache]: Analyzing trace with hash 74840, now seen corresponding path program 1 times [2023-11-26 10:42:38,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 10:42:38,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788684193] [2023-11-26 10:42:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:42:38,450 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 [2023-11-26 10:42:38,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 10:42:38,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 10:42:38,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 10:42:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:38,606 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:42:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:42:38,652 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-26 10:42:38,654 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 10:42:38,655 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-26 10:42:38,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-11-26 10:42:38,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-26 10:42:38,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-26 10:42:38,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-26 10:42:38,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-26 10:42:38,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-26 10:42:38,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-26 10:42:38,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-11-26 10:42:38,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-11-26 10:42:38,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-11-26 10:42:38,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-11-26 10:42:38,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-11-26 10:42:38,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 10:42:38,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 10:42:38,870 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 10:42:38,874 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:42:38,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:42:38 BoogieIcfgContainer [2023-11-26 10:42:38,897 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:42:38,897 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:42:38,897 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:42:38,898 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:42:38,898 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:42:38" (3/4) ... [2023-11-26 10:42:38,900 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 10:42:38,902 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:42:38,903 INFO L158 Benchmark]: Toolchain (without parser) took 1592.65ms. Allocated memory is still 77.6MB. Free memory was 54.5MB in the beginning and 56.5MB in the end (delta: -2.0MB). Peak memory consumption was 237.0kB. Max. memory is 16.1GB. [2023-11-26 10:42:38,904 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 54.5MB. Free memory was 31.0MB in the beginning and 31.0MB in the end (delta: 24.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:38,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.81ms. Allocated memory is still 77.6MB. Free memory was 54.4MB in the beginning and 44.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:42:38,905 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.75ms. Allocated memory is still 77.6MB. Free memory was 44.2MB in the beginning and 42.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:38,906 INFO L158 Benchmark]: Boogie Preprocessor took 82.23ms. Allocated memory is still 77.6MB. Free memory was 42.8MB in the beginning and 40.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:42:38,906 INFO L158 Benchmark]: RCFGBuilder took 542.95ms. Allocated memory is still 77.6MB. Free memory was 40.8MB in the beginning and 47.2MB in the end (delta: -6.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-11-26 10:42:38,907 INFO L158 Benchmark]: TraceAbstraction took 612.82ms. Allocated memory is still 77.6MB. Free memory was 46.4MB in the beginning and 56.9MB in the end (delta: -10.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2023-11-26 10:42:38,907 INFO L158 Benchmark]: Witness Printer took 4.48ms. Allocated memory is still 77.6MB. Free memory was 56.9MB in the beginning and 56.5MB in the end (delta: 348.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:42:38,911 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 54.5MB. Free memory was 31.0MB in the beginning and 31.0MB in the end (delta: 24.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.81ms. Allocated memory is still 77.6MB. Free memory was 54.4MB in the beginning and 44.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.75ms. Allocated memory is still 77.6MB. Free memory was 44.2MB in the beginning and 42.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 82.23ms. Allocated memory is still 77.6MB. Free memory was 42.8MB in the beginning and 40.8MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 542.95ms. Allocated memory is still 77.6MB. Free memory was 40.8MB in the beginning and 47.2MB in the end (delta: -6.4MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * TraceAbstraction took 612.82ms. Allocated memory is still 77.6MB. Free memory was 46.4MB in the beginning and 56.9MB in the end (delta: -10.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Witness Printer took 4.48ms. Allocated memory is still 77.6MB. Free memory was 56.9MB in the beginning and 56.5MB in the end (delta: 348.4kB). 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: 0.5s, 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 [2023-11-26 10:42:38,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3e5618a-4d5d-4fcf-9bf3-53b4ea26bee1/bin/uautomizer-verify-VRDe98Ueme/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