./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 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_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/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_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9 --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 0.2.4-dev-0e0057c [2023-12-03 02:11:36,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 02:11:36,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-12-03 02:11:36,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 02:11:36,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 02:11:36,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 02:11:36,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 02:11:36,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 02:11:36,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 02:11:36,522 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 02:11:36,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 02:11:36,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 02:11:36,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 02:11:36,524 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-03 02:11:36,525 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-03 02:11:36,525 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-03 02:11:36,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 02:11:36,526 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 02:11:36,527 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 02:11:36,527 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 02:11:36,528 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 02:11:36,531 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 02:11:36,531 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 02:11:36,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 02:11:36,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:11:36,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 02:11:36,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 02:11:36,534 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 02:11:36,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 02:11:36,534 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_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20 [2023-12-03 02:11:36,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 02:11:36,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 02:11:36,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 02:11:36,752 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 02:11:36,753 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 02:11:36,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2023-12-03 02:11:39,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 02:11:39,661 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 02:11:39,661 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2023-12-03 02:11:39,674 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/data/f7272af82/fc8ecf565ab04c04965e169495215869/FLAG156e9ab84 [2023-12-03 02:11:39,687 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/data/f7272af82/fc8ecf565ab04c04965e169495215869 [2023-12-03 02:11:39,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 02:11:39,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 02:11:39,692 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 02:11:39,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 02:11:39,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 02:11:39,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:11:39" (1/1) ... [2023-12-03 02:11:39,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5884c442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:39, skipping insertion in model container [2023-12-03 02:11:39,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:11:39" (1/1) ... [2023-12-03 02:11:39,734 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 02:11:39,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:11:39,986 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 02:11:40,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 02:11:40,050 INFO L206 MainTranslator]: Completed translation [2023-12-03 02:11:40,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40 WrapperNode [2023-12-03 02:11:40,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 02:11:40,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 02:11:40,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 02:11:40,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 02:11:40,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,093 INFO L138 Inliner]: procedures = 116, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2023-12-03 02:11:40,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 02:11:40,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 02:11:40,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 02:11:40,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 02:11:40,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,104 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,120 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 02:11:40,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 02:11:40,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 02:11:40,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 02:11:40,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 02:11:40,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 02:11:40,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 02:11:40,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 02:11:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-03 02:11:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-03 02:11:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-03 02:11:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-03 02:11:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 02:11:40,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 02:11:40,277 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 02:11:40,279 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 02:11:40,494 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 02:11:40,560 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 02:11:40,560 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-03 02:11:40,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:11:40 BoogieIcfgContainer [2023-12-03 02:11:40,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 02:11:40,563 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 02:11:40,563 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 02:11:40,570 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 02:11:40,570 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:11:40" (1/1) ... [2023-12-03 02:11:40,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 02:11:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:11:40,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2023-12-03 02:11:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-12-03 02:11:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 02:11:40,625 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:11:40,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:11:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:11:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:11:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:11:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2023-12-03 02:11:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2023-12-03 02:11:40,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 02:11:40,949 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:11:40,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:11:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:11:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:11:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:11:41,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2023-12-03 02:11:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2023-12-03 02:11:41,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 02:11:41,571 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:11:41,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:11:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:11:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:11:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:11:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 47 states and 56 transitions. [2023-12-03 02:11:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2023-12-03 02:11:41,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 02:11:41,623 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:11:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:11:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:11:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:11:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:11:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 48 states and 59 transitions. [2023-12-03 02:11:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2023-12-03 02:11:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 02:11:41,845 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:11:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:11:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 02:11:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 02:11:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 02:11:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 48 states and 58 transitions. [2023-12-03 02:11:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2023-12-03 02:11:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-03 02:11:42,149 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 02:11:42,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 02:11:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:11:42,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 02:11:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:11:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:11:42,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 02:11:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 02:11:42,240 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2023-12-03 02:11:42,258 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-12-03 02:11:42,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-12-03 02:11:42,264 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-12-03 02:11:42,264 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-12-03 02:11:42,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 02:11:42 ImpRootNode [2023-12-03 02:11:42,267 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 02:11:42,268 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 02:11:42,268 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 02:11:42,268 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 02:11:42,269 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:11:40" (3/4) ... [2023-12-03 02:11:42,270 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-03 02:11:42,272 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-12-03 02:11:42,272 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-12-03 02:11:42,273 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~malloc4 [2023-12-03 02:11:42,273 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-12-03 02:11:42,306 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-03 02:11:42,307 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 02:11:42,307 INFO L158 Benchmark]: Toolchain (without parser) took 2616.86ms. Allocated memory is still 155.2MB. Free memory was 124.4MB in the beginning and 81.1MB in the end (delta: 43.3MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2023-12-03 02:11:42,308 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:11:42,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.33ms. Allocated memory is still 155.2MB. Free memory was 123.9MB in the beginning and 107.6MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-03 02:11:42,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.37ms. Allocated memory is still 155.2MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 02:11:42,309 INFO L158 Benchmark]: Boogie Preprocessor took 28.58ms. Allocated memory is still 155.2MB. Free memory was 105.5MB in the beginning and 104.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 02:11:42,310 INFO L158 Benchmark]: RCFGBuilder took 438.05ms. Allocated memory is still 155.2MB. Free memory was 104.0MB in the beginning and 83.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-03 02:11:42,310 INFO L158 Benchmark]: CodeCheck took 1704.66ms. Allocated memory is still 155.2MB. Free memory was 83.5MB in the beginning and 83.2MB in the end (delta: 333.5kB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. [2023-12-03 02:11:42,311 INFO L158 Benchmark]: Witness Printer took 39.01ms. Allocated memory is still 155.2MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 02:11:42,314 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: 1.7s, 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, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 18 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 95 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 FALSE !(length % 2 == 0) [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 0.19ms. Allocated memory is still 117.4MB. Free memory is still 78.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.33ms. Allocated memory is still 155.2MB. Free memory was 123.9MB in the beginning and 107.6MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.37ms. Allocated memory is still 155.2MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.58ms. Allocated memory is still 155.2MB. Free memory was 105.5MB in the beginning and 104.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 438.05ms. Allocated memory is still 155.2MB. Free memory was 104.0MB in the beginning and 83.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * CodeCheck took 1704.66ms. Allocated memory is still 155.2MB. Free memory was 83.5MB in the beginning and 83.2MB in the end (delta: 333.5kB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. * Witness Printer took 39.01ms. Allocated memory is still 155.2MB. Free memory was 83.2MB in the beginning and 81.1MB 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: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - 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: unknown boogie variable #t~malloc4 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-12-03 02:11:42,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f5ab0b9-1464-4bb9-8fc3-f008e577d9f5/bin/ukojak-verify-Qdu7aM0XO9/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)