./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV --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 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:02:14,303 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:02:14,374 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-12 00:02:14,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:02:14,380 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-12 00:02:14,405 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:02:14,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:02:14,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:02:14,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:02:14,409 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:02:14,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:02:14,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:02:14,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:02:14,411 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:02:14,411 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:02:14,412 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:02:14,413 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:02:14,413 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:02:14,414 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:02:14,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:02:14,415 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-12 00:02:14,416 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-12 00:02:14,416 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:02:14,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-12 00:02:14,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:02:14,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:02:14,419 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-12 00:02:14,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:02:14,420 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_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 [2023-11-12 00:02:14,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:02:14,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:02:14,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:02:14,749 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:02:14,750 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:02:14,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2023-11-12 00:02:17,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:02:18,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:02:18,238 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2023-11-12 00:02:18,254 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/data/f96157c20/039377ca22aa4a90ad39ca8546aa1646/FLAG8518568de [2023-11-12 00:02:18,269 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/data/f96157c20/039377ca22aa4a90ad39ca8546aa1646 [2023-11-12 00:02:18,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:02:18,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:02:18,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:02:18,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:02:18,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:02:18,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a07038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18, skipping insertion in model container [2023-11-12 00:02:18,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,335 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:02:18,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:02:18,661 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:02:18,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:02:18,772 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:02:18,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18 WrapperNode [2023-11-12 00:02:18,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:02:18,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:02:18,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:02:18,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:02:18,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,823 INFO L138 Inliner]: procedures = 116, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2023-11-12 00:02:18,824 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:02:18,824 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:02:18,825 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:02:18,825 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:02:18,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:02:18,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:02:18,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:02:18,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:02:18,869 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:18" (1/1) ... [2023-11-12 00:02:18,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-12 00:02:18,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/z3 [2023-11-12 00:02:18,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-12 00:02:18,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-12 00:02:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:02:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:02:18,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:02:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:02:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:02:18,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:02:19,092 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:02:19,094 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:02:19,476 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:02:19,609 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:02:19,609 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 00:02:19,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:02:19 BoogieIcfgContainer [2023-11-12 00:02:19,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:02:19,613 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-12 00:02:19,613 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-12 00:02:19,624 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-12 00:02:19,624 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:02:19" (1/1) ... [2023-11-12 00:02:19,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:02:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-12 00:02:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2023-11-12 00:02:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-12 00:02:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:02:19,687 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-12 00:02:19,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:02:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:02:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:02:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-12 00:02:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2023-11-12 00:02:20,014 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-11-12 00:02:20,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:02:20,014 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-12 00:02:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:02:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:02:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:02:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-12 00:02:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 45 states and 53 transitions. [2023-11-12 00:02:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2023-11-12 00:02:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:02:20,999 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-12 00:02:21,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:02:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:02:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:02:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-12 00:02:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 46 states and 56 transitions. [2023-11-12 00:02:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2023-11-12 00:02:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:02:21,145 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-12 00:02:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:02:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:02:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:02:21,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-12 00:02:21,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 48 states and 60 transitions. [2023-11-12 00:02:21,309 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2023-11-12 00:02:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 00:02:21,310 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-12 00:02:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:02:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:02:21,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:02:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-12 00:02:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 49 states and 61 transitions. [2023-11-12 00:02:21,642 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2023-11-12 00:02:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 00:02:21,642 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-12 00:02:21,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:02:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:02:21,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:02:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:02:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:02:21,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:02:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:02:21,740 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2023-11-12 00:02:21,765 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:02:21,768 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 00:02:21,769 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 00:02:21,769 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:02:21,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 12.11 12:02:21 ImpRootNode [2023-11-12 00:02:21,772 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-12 00:02:21,773 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:02:21,773 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:02:21,773 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:02:21,774 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:02:19" (3/4) ... [2023-11-12 00:02:21,775 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 00:02:21,778 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 00:02:21,779 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:02:21,779 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-12 00:02:21,779 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-11-12 00:02:21,812 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/witness.graphml [2023-11-12 00:02:21,812 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:02:21,813 INFO L158 Benchmark]: Toolchain (without parser) took 3539.22ms. Allocated memory is still 213.9MB. Free memory was 165.1MB in the beginning and 118.3MB in the end (delta: 46.8MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2023-11-12 00:02:21,814 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 151.0MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:02:21,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.98ms. Allocated memory is still 213.9MB. Free memory was 164.4MB in the beginning and 148.4MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:02:21,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.31ms. Allocated memory is still 213.9MB. Free memory was 148.4MB in the beginning and 146.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:02:21,816 INFO L158 Benchmark]: Boogie Preprocessor took 31.51ms. Allocated memory is still 213.9MB. Free memory was 146.3MB in the beginning and 144.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:02:21,816 INFO L158 Benchmark]: RCFGBuilder took 746.42ms. Allocated memory is still 213.9MB. Free memory was 144.9MB in the beginning and 122.5MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-12 00:02:21,817 INFO L158 Benchmark]: CodeCheck took 2159.26ms. Allocated memory is still 213.9MB. Free memory was 122.5MB in the beginning and 120.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2023-11-12 00:02:21,818 INFO L158 Benchmark]: Witness Printer took 39.59ms. Allocated memory is still 213.9MB. Free memory was 120.4MB in the beginning and 118.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:02:21,821 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, 44 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 161 IncrementalHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 19 mSDtfsCounter, 161 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 91 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND FALSE !(length < 1) [L518] COND TRUE length % 2 == 0 [L518] length++ [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; VAL [arr={2:0}, i=0, length=1073741825] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() [L521] i++ VAL [arr={2:0}, i=1, length=1073741825] [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 151.0MB. Free memory is still 94.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 497.98ms. Allocated memory is still 213.9MB. Free memory was 164.4MB in the beginning and 148.4MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.31ms. Allocated memory is still 213.9MB. Free memory was 148.4MB in the beginning and 146.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.51ms. Allocated memory is still 213.9MB. Free memory was 146.3MB in the beginning and 144.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 746.42ms. Allocated memory is still 213.9MB. Free memory was 144.9MB in the beginning and 122.5MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * CodeCheck took 2159.26ms. Allocated memory is still 213.9MB. Free memory was 122.5MB in the beginning and 120.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * Witness Printer took 39.59ms. Allocated memory is still 213.9MB. Free memory was 120.4MB in the beginning and 118.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-12 00:02:21,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e75939f-8285-47c2-bb08-8e1a608fd577/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)