./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48fd0d3fe19d1deb0a082df55a1274a55060d743a98a6889cf18bd32ae5a67a0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:56:40,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:56:40,423 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-19 02:56:40,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 02:56:40,433 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 02:56:40,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:56:40,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:56:40,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:56:40,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:56:40,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 02:56:40,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 02:56:40,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 02:56:40,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:56:40,484 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 02:56:40,485 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 02:56:40,485 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 02:56:40,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:56:40,486 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:56:40,487 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 02:56:40,487 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:56:40,487 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:56:40,488 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:56:40,488 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:56:40,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:56:40,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:56:40,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:56:40,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:56:40,491 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 02:56:40,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 02:56:40,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48fd0d3fe19d1deb0a082df55a1274a55060d743a98a6889cf18bd32ae5a67a0 [2023-11-19 02:56:40,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:56:40,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:56:40,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:56:40,862 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:56:40,863 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:56:40,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2023-11-19 02:56:44,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:56:44,464 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:56:44,466 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/sv-benchmarks/c/array-memsafety/add_last_unsafe.i [2023-11-19 02:56:44,481 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/data/d5976268c/c1aea650433f469382551a08f16dbdc0/FLAG0c8aee1d6 [2023-11-19 02:56:44,498 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/data/d5976268c/c1aea650433f469382551a08f16dbdc0 [2023-11-19 02:56:44,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:56:44,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:56:44,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:56:44,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:56:44,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:56:44,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:44" (1/1) ... [2023-11-19 02:56:44,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f4bf30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:44, skipping insertion in model container [2023-11-19 02:56:44,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:56:44" (1/1) ... [2023-11-19 02:56:44,582 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:56:44,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:56:44,945 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:56:45,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:56:45,047 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:56:45,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45 WrapperNode [2023-11-19 02:56:45,048 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:56:45,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:56:45,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:56:45,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:56:45,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,091 INFO L138 Inliner]: procedures = 115, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2023-11-19 02:56:45,092 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:56:45,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:56:45,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:56:45,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:56:45,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:56:45,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:56:45,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:56:45,127 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:56:45,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:56:45,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:56:45,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:56:45,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:56:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 02:56:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 02:56:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 02:56:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:56:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:56:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:56:45,428 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:56:45,430 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:56:45,593 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:56:45,659 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:56:45,659 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 02:56:45,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:45 BoogieIcfgContainer [2023-11-19 02:56:45,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:56:45,665 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:56:45,665 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:56:45,676 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:56:45,676 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:45" (1/1) ... [2023-11-19 02:56:45,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:56:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:56:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 26 states and 29 transitions. [2023-11-19 02:56:45,743 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-11-19 02:56:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 02:56:45,746 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:56:45,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:56:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:56:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:56:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:56:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 26 states and 28 transitions. [2023-11-19 02:56:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-11-19 02:56:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 02:56:45,998 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:56:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:56:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:56:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:56:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:56:46,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 25 states and 27 transitions. [2023-11-19 02:56:46,223 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-11-19 02:56:46,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 02:56:46,224 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:56:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:56:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:46,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:56:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:46,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:56:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:56:46,332 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2023-11-19 02:56:46,350 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 02:56:46,353 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 02:56:46,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:56:46 ImpRootNode [2023-11-19 02:56:46,356 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:56:46,357 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:56:46,357 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:56:46,357 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:56:46,358 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:56:45" (3/4) ... [2023-11-19 02:56:46,359 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 02:56:46,362 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 02:56:46,362 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc3 [2023-11-19 02:56:46,397 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 02:56:46,398 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:56:46,398 INFO L158 Benchmark]: Toolchain (without parser) took 1893.10ms. Allocated memory is still 153.1MB. Free memory was 105.6MB in the beginning and 80.9MB in the end (delta: 24.7MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-11-19 02:56:46,399 INFO L158 Benchmark]: CDTParser took 24.87ms. Allocated memory is still 115.3MB. Free memory was 61.0MB in the beginning and 82.9MB in the end (delta: -21.9MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2023-11-19 02:56:46,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.99ms. Allocated memory is still 153.1MB. Free memory was 105.6MB in the beginning and 89.6MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 02:56:46,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.87ms. Allocated memory is still 153.1MB. Free memory was 89.6MB in the beginning and 87.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:56:46,401 INFO L158 Benchmark]: Boogie Preprocessor took 32.83ms. Allocated memory is still 153.1MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:56:46,402 INFO L158 Benchmark]: RCFGBuilder took 538.03ms. Allocated memory is still 153.1MB. Free memory was 86.3MB in the beginning and 109.5MB in the end (delta: -23.2MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2023-11-19 02:56:46,403 INFO L158 Benchmark]: CodeCheck took 691.19ms. Allocated memory is still 153.1MB. Free memory was 109.5MB in the beginning and 82.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-19 02:56:46,403 INFO L158 Benchmark]: Witness Printer took 40.86ms. Allocated memory is still 153.1MB. Free memory was 82.2MB in the beginning and 80.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:56:46,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 26 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 6 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 [L515] length = 1 [L516] int *arr = __builtin_alloca (length); VAL [arr={2:0}, length=1] [L517] COND FALSE !(!arr) [L518] int *a = arr; [L520] int k = 0; VAL [a={2:0}, arr={2:0}, k=0, length=1] [L520] COND TRUE k < length [L522] arr[k] = __VERIFIER_nondet_int() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 24.87ms. Allocated memory is still 115.3MB. Free memory was 61.0MB in the beginning and 82.9MB in the end (delta: -21.9MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 539.99ms. Allocated memory is still 153.1MB. Free memory was 105.6MB in the beginning and 89.6MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.87ms. Allocated memory is still 153.1MB. Free memory was 89.6MB in the beginning and 87.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.83ms. Allocated memory is still 153.1MB. Free memory was 87.6MB in the beginning and 86.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 538.03ms. Allocated memory is still 153.1MB. Free memory was 86.3MB in the beginning and 109.5MB in the end (delta: -23.2MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * CodeCheck took 691.19ms. Allocated memory is still 153.1MB. Free memory was 109.5MB in the beginning and 82.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 40.86ms. Allocated memory is still 153.1MB. Free memory was 82.2MB in the beginning and 80.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc3 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 02:56:46,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_620468e6-8697-4c19-af4c-07093fd46537/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)