./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/alias_of_return.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/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_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/alias_of_return.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/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_3f1e6b0c-0086-4942-88c4-2c51286d5849/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 ba0bcfe856788bd0caa6dc699e0af14f5977926f33f52c273bc3aa3b61532a90 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 03:22:14,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 03:22:14,198 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-12-03 03:22:14,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 03:22:14,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 03:22:14,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 03:22:14,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 03:22:14,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 03:22:14,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 03:22:14,228 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-03 03:22:14,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 03:22:14,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-03 03:22:14,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 03:22:14,230 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-03 03:22:14,230 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-03 03:22:14,231 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-03 03:22:14,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 03:22:14,232 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 03:22:14,232 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-03 03:22:14,233 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 03:22:14,233 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 03:22:14,238 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 03:22:14,239 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 03:22:14,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 03:22:14,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:22:14,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 03:22:14,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 03:22:14,241 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 03:22:14,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 03:22:14,241 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_3f1e6b0c-0086-4942-88c4-2c51286d5849/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba0bcfe856788bd0caa6dc699e0af14f5977926f33f52c273bc3aa3b61532a90 [2023-12-03 03:22:14,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 03:22:14,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 03:22:14,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 03:22:14,528 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 03:22:14,529 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 03:22:14,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/ldv-regression/alias_of_return.i [2023-12-03 03:22:17,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 03:22:17,505 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 03:22:17,507 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/sv-benchmarks/c/ldv-regression/alias_of_return.i [2023-12-03 03:22:17,514 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/data/98be4c70c/cbb8e9968daa43c38bfda81fea1b7af9/FLAG0456c12bf [2023-12-03 03:22:17,527 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/data/98be4c70c/cbb8e9968daa43c38bfda81fea1b7af9 [2023-12-03 03:22:17,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 03:22:17,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 03:22:17,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 03:22:17,532 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 03:22:17,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 03:22:17,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5712c4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17, skipping insertion in model container [2023-12-03 03:22:17,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,554 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 03:22:17,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:22:17,714 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 03:22:17,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:22:17,739 INFO L206 MainTranslator]: Completed translation [2023-12-03 03:22:17,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17 WrapperNode [2023-12-03 03:22:17,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 03:22:17,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 03:22:17,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 03:22:17,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 03:22:17,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,765 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2023-12-03 03:22:17,765 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 03:22:17,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 03:22:17,766 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 03:22:17,766 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 03:22:17,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,775 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,779 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 03:22:17,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 03:22:17,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 03:22:17,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 03:22:17,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:22:17" (1/1) ... [2023-12-03 03:22:17,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:22:17,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 03:22:17,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 03:22:17,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 03:22:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 03:22:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 03:22:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-03 03:22:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-03 03:22:17,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 03:22:17,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 03:22:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-03 03:22:17,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-03 03:22:17,919 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 03:22:17,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 03:22:18,045 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 03:22:18,076 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 03:22:18,076 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-03 03:22:18,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:22:18 BoogieIcfgContainer [2023-12-03 03:22:18,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 03:22:18,079 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 03:22:18,079 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 03:22:18,087 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 03:22:18,088 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:22:18" (1/1) ... [2023-12-03 03:22:18,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 03:22:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:22:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-12-03 03:22:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-12-03 03:22:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-03 03:22:18,148 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:22:18,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:22:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:22:18,320 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 03:22:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:22:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-12-03 03:22:18,372 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-12-03 03:22:18,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-03 03:22:18,375 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:22:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:22:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:22:18,482 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 03:22:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:22:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-12-03 03:22:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-12-03 03:22:18,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 03:22:18,570 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:22:18,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:22:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:22:18,631 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 03:22:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:22:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-03 03:22:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-03 03:22:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 03:22:18,658 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:22:18,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:22:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:22:18,783 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 03:22:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:22:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-12-03 03:22:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-12-03 03:22:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 03:22:19,045 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:22:19,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:22:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:22:19,072 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 03:22:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:22:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-12-03 03:22:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-12-03 03:22:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-03 03:22:19,180 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:22:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:22:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:22:19,238 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 03:22:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:22:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-03 03:22:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-03 03:22:19,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-03 03:22:19,412 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:22:19,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:22:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:22:19,560 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 03:22:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:22:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 9 states and 8 transitions. [2023-12-03 03:22:19,974 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2023-12-03 03:22:19,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 03:22:19,975 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:22:19,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:22:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 03:22:20,104 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 03:22:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:22:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 8 states and 7 transitions. [2023-12-03 03:22:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2023-12-03 03:22:20,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-03 03:22:20,757 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2023-12-03 03:22:20,765 INFO L751 CodeCheckObserver]: All specifications hold 8 specifications checked. All of them hold [2023-12-03 03:22:20,796 INFO L560 CodeCheckObserver]: Invariant with dag size 16 [2023-12-03 03:22:20,803 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[~#a~0!base] could not be translated [2023-12-03 03:22:20,804 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayStoreExpression #valid[~#a~0!base := 0] could not be translated [2023-12-03 03:22:20,804 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[~#a~0!base] could not be translated [2023-12-03 03:22:20,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 03:22:20 ImpRootNode [2023-12-03 03:22:20,805 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 03:22:20,806 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 03:22:20,806 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 03:22:20,806 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 03:22:20,806 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:22:18" (3/4) ... [2023-12-03 03:22:20,808 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-03 03:22:20,813 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-12-03 03:22:20,813 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-12-03 03:22:20,813 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-03 03:22:20,814 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-03 03:22:20,882 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-03 03:22:20,882 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/bin/ukojak-verify-Qdu7aM0XO9/witness.yml [2023-12-03 03:22:20,883 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 03:22:20,884 INFO L158 Benchmark]: Toolchain (without parser) took 3352.77ms. Allocated memory is still 157.3MB. Free memory was 117.7MB in the beginning and 77.8MB in the end (delta: 39.9MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2023-12-03 03:22:20,884 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 84.9MB in the end (delta: 87.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:22:20,885 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.98ms. Allocated memory is still 157.3MB. Free memory was 117.4MB in the beginning and 107.6MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-03 03:22:20,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.50ms. Allocated memory is still 157.3MB. Free memory was 107.6MB in the beginning and 106.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 03:22:20,886 INFO L158 Benchmark]: Boogie Preprocessor took 18.58ms. Allocated memory is still 157.3MB. Free memory was 106.1MB in the beginning and 105.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:22:20,886 INFO L158 Benchmark]: RCFGBuilder took 292.61ms. Allocated memory is still 157.3MB. Free memory was 105.1MB in the beginning and 93.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-03 03:22:20,887 INFO L158 Benchmark]: CodeCheck took 2726.23ms. Allocated memory is still 157.3MB. Free memory was 93.6MB in the beginning and 82.0MB in the end (delta: 11.6MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2023-12-03 03:22:20,887 INFO L158 Benchmark]: Witness Printer took 77.19ms. Allocated memory is still 157.3MB. Free memory was 82.0MB in the beginning and 77.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 03:22:20,890 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, 17 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 284 IncrementalHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 2 mSDtfsCounter, 284 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 219 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: null * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 84.9MB in the end (delta: 87.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.98ms. Allocated memory is still 157.3MB. Free memory was 117.4MB in the beginning and 107.6MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.50ms. Allocated memory is still 157.3MB. Free memory was 107.6MB in the beginning and 106.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.58ms. Allocated memory is still 157.3MB. Free memory was 106.1MB in the beginning and 105.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 292.61ms. Allocated memory is still 157.3MB. Free memory was 105.1MB in the beginning and 93.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 2726.23ms. Allocated memory is still 157.3MB. Free memory was 93.6MB in the beginning and 82.0MB in the end (delta: 11.6MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Witness Printer took 77.19ms. Allocated memory is still 157.3MB. Free memory was 82.0MB in the beginning and 77.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[~#a~0!base] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayStoreExpression #valid[~#a~0!base := 0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[~#a~0!base] could not be translated RESULT: Ultimate proved your program to be correct! [2023-12-03 03:22:20,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f1e6b0c-0086-4942-88c4-2c51286d5849/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 Result: TRUE