./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_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:46:28,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:46:28,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-12-02 15:46:28,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:46:28,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:46:28,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:46:28,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:46:28,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:46:28,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:46:28,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:46:28,766 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:46:28,766 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:46:28,767 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:46:28,767 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:46:28,768 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:46:28,768 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:46:28,769 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:46:28,769 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:46:28,770 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:46:28,770 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:46:28,771 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:46:28,772 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:46:28,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:46:28,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:46:28,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:46:28,774 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:46:28,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:46:28,775 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:46:28,775 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:46:28,776 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 15:46:28,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:46:28,777 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:46:28,777 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:46:28,777 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:46:28,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:46:28,778 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:46:28,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:46:28,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:46:28,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:46:28,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:46:28,779 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:46:28,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:46:28,779 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:46:28,780 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:46:28,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:46:28,780 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-12-02 15:46:28,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:46:28,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:46:28,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:46:29,001 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:46:29,001 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:46:29,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-12-02 15:46:31,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:46:31,915 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:46:31,916 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-12-02 15:46:31,922 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/data/49b01d3ac/0c5af7d033464217828b9a5de84d89a3/FLAGd70265b7c [2023-12-02 15:46:31,933 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/data/49b01d3ac/0c5af7d033464217828b9a5de84d89a3 [2023-12-02 15:46:31,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:46:31,936 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:46:31,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:46:31,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:46:31,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:46:31,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:46:31" (1/1) ... [2023-12-02 15:46:31,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e132165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:31, skipping insertion in model container [2023-12-02 15:46:31,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:46:31" (1/1) ... [2023-12-02 15:46:31,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:46:32,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:46:32,089 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:46:32,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:46:32,115 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:46:32,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32 WrapperNode [2023-12-02 15:46:32,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:46:32,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:46:32,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:46:32,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:46:32,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,150 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-12-02 15:46:32,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:46:32,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:46:32,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:46:32,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:46:32,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:46:32,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:46:32,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:46:32,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:46:32,175 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (1/1) ... [2023-12-02 15:46:32,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:46:32,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:46:32,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:46:32,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:46:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:46:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:46:32,234 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-12-02 15:46:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-12-02 15:46:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:46:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:46:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:46:32,311 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:46:32,313 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:46:32,464 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:46:32,490 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:46:32,490 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 15:46:32,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:46:32 BoogieIcfgContainer [2023-12-02 15:46:32,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:46:32,494 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:46:32,494 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:46:32,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:46:32,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:46:31" (1/3) ... [2023-12-02 15:46:32,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f73b9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:46:32, skipping insertion in model container [2023-12-02 15:46:32,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:32" (2/3) ... [2023-12-02 15:46:32,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f73b9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:46:32, skipping insertion in model container [2023-12-02 15:46:32,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:46:32" (3/3) ... [2023-12-02 15:46:32,501 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-12-02 15:46:32,521 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:46:32,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-12-02 15:46:32,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:46:32,576 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=FINITE_AUTOMATA, 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;@5b054be4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:46:32,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-12-02 15:46:32,580 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) [2023-12-02 15:46:32,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 15:46:32,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:46:32,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 15:46:32,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 15:46:32,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:46:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash 74840, now seen corresponding path program 1 times [2023-12-02 15:46:32,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:46:32,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494128280] [2023-12-02 15:46:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:46:32,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:46:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:46:32,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:46:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:46:32,729 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 15:46:32,731 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:46:32,732 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-12-02 15:46:32,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-12-02 15:46:32,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-12-02 15:46:32,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-12-02 15:46:32,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-12-02 15:46:32,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-12-02 15:46:32,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-12-02 15:46:32,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-12-02 15:46:32,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-12-02 15:46:32,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-12-02 15:46:32,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-12-02 15:46:32,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-12-02 15:46:32,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-12-02 15:46:32,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:46:32,744 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 15:46:32,748 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:46:32,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:46:32 BoogieIcfgContainer [2023-12-02 15:46:32,762 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:46:32,763 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:46:32,763 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:46:32,763 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:46:32,764 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:46:32" (3/4) ... [2023-12-02 15:46:32,766 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:46:32,767 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:46:32,769 INFO L158 Benchmark]: Toolchain (without parser) took 832.03ms. Allocated memory is still 134.2MB. Free memory was 96.3MB in the beginning and 57.2MB in the end (delta: 39.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-12-02 15:46:32,769 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:46:32,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.33ms. Allocated memory is still 134.2MB. Free memory was 95.9MB in the beginning and 86.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:46:32,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.85ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 85.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:46:32,771 INFO L158 Benchmark]: Boogie Preprocessor took 21.83ms. Allocated memory is still 134.2MB. Free memory was 85.1MB in the beginning and 83.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:46:32,771 INFO L158 Benchmark]: RCFGBuilder took 317.64ms. Allocated memory is still 134.2MB. Free memory was 83.7MB in the beginning and 71.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:46:32,772 INFO L158 Benchmark]: TraceAbstraction took 268.30ms. Allocated memory is still 134.2MB. Free memory was 70.8MB in the beginning and 57.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:46:32,772 INFO L158 Benchmark]: Witness Printer took 4.46ms. Allocated memory is still 134.2MB. Free memory was 57.4MB in the beginning and 57.2MB in the end (delta: 209.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:46:32,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 134.2MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.33ms. Allocated memory is still 134.2MB. Free memory was 95.9MB in the beginning and 86.2MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.85ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 85.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.83ms. Allocated memory is still 134.2MB. Free memory was 85.1MB in the beginning and 83.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 317.64ms. Allocated memory is still 134.2MB. Free memory was 83.7MB in the beginning and 71.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 268.30ms. Allocated memory is still 134.2MB. Free memory was 70.8MB in the beginning and 57.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.46ms. Allocated memory is still 134.2MB. Free memory was 57.4MB in the beginning and 57.2MB in the end (delta: 209.6kB). 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: 0.2s, 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 [2023-12-02 15:46:32,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:46:34,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:46:34,807 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2023-12-02 15:46:34,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:46:34,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:46:34,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:46:34,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:46:34,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:46:34,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:46:34,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:46:34,844 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:46:34,845 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:46:34,845 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:46:34,846 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:46:34,846 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:46:34,847 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:46:34,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 15:46:34,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 15:46:34,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:46:34,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:46:34,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:46:34,850 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 15:46:34,850 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 15:46:34,851 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 15:46:34,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:46:34,852 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:46:34,852 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:46:34,853 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:46:34,853 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:46:34,853 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:46:34,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:46:34,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:46:34,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:46:34,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:46:34,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:46:34,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:46:34,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:46:34,856 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:46:34,856 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:46:34,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:46:34,856 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:46:34,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:46:34,857 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2023-12-02 15:46:35,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:46:35,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:46:35,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:46:35,170 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:46:35,171 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:46:35,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-12-02 15:46:37,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:46:38,172 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:46:38,172 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/sv-benchmarks/c/termination-recursive-malloc/chunk1-2.i [2023-12-02 15:46:38,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/data/634c286f5/67d8af026af041a0996ca881b9d7704d/FLAG27d776dfb [2023-12-02 15:46:38,193 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/data/634c286f5/67d8af026af041a0996ca881b9d7704d [2023-12-02 15:46:38,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:46:38,197 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:46:38,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:46:38,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:46:38,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:46:38,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed2cfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38, skipping insertion in model container [2023-12-02 15:46:38,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,225 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:46:38,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:46:38,392 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:46:38,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:46:38,422 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:46:38,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38 WrapperNode [2023-12-02 15:46:38,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:46:38,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:46:38,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:46:38,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:46:38,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,455 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-12-02 15:46:38,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:46:38,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:46:38,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:46:38,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:46:38,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,468 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:46:38,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:46:38,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:46:38,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:46:38,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (1/1) ... [2023-12-02 15:46:38,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:46:38,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:46:38,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:46:38,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:46:38,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:46:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 15:46:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2023-12-02 15:46:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2023-12-02 15:46:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:46:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:46:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 15:46:38,627 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:46:38,630 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:46:38,906 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:46:38,931 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:46:38,931 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 15:46:38,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:46:38 BoogieIcfgContainer [2023-12-02 15:46:38,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:46:38,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:46:38,935 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:46:38,939 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:46:38,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:46:38" (1/3) ... [2023-12-02 15:46:38,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2343e7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:46:38, skipping insertion in model container [2023-12-02 15:46:38,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:46:38" (2/3) ... [2023-12-02 15:46:38,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2343e7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:46:38, skipping insertion in model container [2023-12-02 15:46:38,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:46:38" (3/3) ... [2023-12-02 15:46:38,942 INFO L112 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2023-12-02 15:46:38,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:46:38,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-12-02 15:46:39,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:46:39,015 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=FINITE_AUTOMATA, 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;@56120dd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:46:39,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-12-02 15:46:39,020 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) [2023-12-02 15:46:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 15:46:39,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:46:39,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 15:46:39,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-12-02 15:46:39,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:46:39,034 INFO L85 PathProgramCache]: Analyzing trace with hash 74840, now seen corresponding path program 1 times [2023-12-02 15:46:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:46:39,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130528278] [2023-12-02 15:46:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:46:39,048 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 [2023-12-02 15:46:39,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:46:39,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 15:46:39,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:46:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:46:39,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 15:46:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 15:46:39,132 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 15:46:39,134 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 15:46:39,135 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-12-02 15:46:39,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2023-12-02 15:46:39,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-12-02 15:46:39,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-12-02 15:46:39,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-12-02 15:46:39,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-12-02 15:46:39,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-12-02 15:46:39,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-12-02 15:46:39,139 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2023-12-02 15:46:39,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2023-12-02 15:46:39,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2023-12-02 15:46:39,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2023-12-02 15:46:39,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2023-12-02 15:46:39,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:46:39,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 15:46:39,346 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 15:46:39,349 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:46:39,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:46:39 BoogieIcfgContainer [2023-12-02 15:46:39,360 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:46:39,361 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:46:39,361 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:46:39,361 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:46:39,361 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:46:38" (3/4) ... [2023-12-02 15:46:39,363 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:46:39,364 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:46:39,365 INFO L158 Benchmark]: Toolchain (without parser) took 1167.99ms. Allocated memory was 77.6MB in the beginning and 119.5MB in the end (delta: 41.9MB). Free memory was 53.8MB in the beginning and 81.2MB in the end (delta: -27.5MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2023-12-02 15:46:39,365 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:46:39,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.38ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 43.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 15:46:39,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.53ms. Allocated memory is still 77.6MB. Free memory was 43.5MB in the beginning and 42.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:46:39,367 INFO L158 Benchmark]: Boogie Preprocessor took 24.68ms. Allocated memory is still 77.6MB. Free memory was 42.1MB in the beginning and 40.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:46:39,367 INFO L158 Benchmark]: RCFGBuilder took 450.26ms. Allocated memory was 77.6MB in the beginning and 119.5MB in the end (delta: 41.9MB). Free memory was 40.9MB in the beginning and 94.9MB in the end (delta: -54.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2023-12-02 15:46:39,368 INFO L158 Benchmark]: TraceAbstraction took 424.87ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 81.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 15:46:39,368 INFO L158 Benchmark]: Witness Printer took 3.45ms. Allocated memory is still 119.5MB. Free memory was 81.7MB in the beginning and 81.2MB in the end (delta: 498.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:46:39,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.38ms. Allocated memory is still 77.6MB. Free memory was 53.8MB in the beginning and 43.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.53ms. Allocated memory is still 77.6MB. Free memory was 43.5MB in the beginning and 42.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.68ms. Allocated memory is still 77.6MB. Free memory was 42.1MB in the beginning and 40.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 450.26ms. Allocated memory was 77.6MB in the beginning and 119.5MB in the end (delta: 41.9MB). Free memory was 40.9MB in the beginning and 94.9MB in the end (delta: -54.0MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 424.87ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 81.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 3.45ms. Allocated memory is still 119.5MB. Free memory was 81.7MB in the beginning and 81.2MB in the end (delta: 498.8kB). 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 [2023-12-02 15:46:39,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c385df46-c1c9-4aac-9447-c339aeac18f4/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample