./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/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_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/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 64bit --witnessprinter.graph.data.programhash 168748c0c54c019ef253d55ab380d3a197e2401ba990ef8210cb41b73a41cb13 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 04:37:55,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 04:37:55,123 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-DerefFreeMemtrack-64bit-Kojak_Default.epf [2023-12-03 04:37:55,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 04:37:55,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 04:37:55,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 04:37:55,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 04:37:55,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 04:37:55,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 04:37:55,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 04:37:55,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 04:37:55,151 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-03 04:37:55,151 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-03 04:37:55,152 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-03 04:37:55,152 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 04:37:55,153 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 04:37:55,153 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 04:37:55,154 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 04:37:55,155 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 04:37:55,155 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 04:37:55,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 04:37:55,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 04:37:55,157 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 04:37:55,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 04:37:55,158 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 04:37:55,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 04:37:55,158 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_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 168748c0c54c019ef253d55ab380d3a197e2401ba990ef8210cb41b73a41cb13 [2023-12-03 04:37:55,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 04:37:55,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 04:37:55,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 04:37:55,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 04:37:55,381 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 04:37:55,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2023-12-03 04:37:58,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 04:37:58,414 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 04:37:58,415 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2023-12-03 04:37:58,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/data/cc58e00f0/98625aa3d8ae434ebdebd4399b3f0aa1/FLAG0ad841174 [2023-12-03 04:37:58,437 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/data/cc58e00f0/98625aa3d8ae434ebdebd4399b3f0aa1 [2023-12-03 04:37:58,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 04:37:58,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 04:37:58,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 04:37:58,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 04:37:58,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 04:37:58,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3083410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58, skipping insertion in model container [2023-12-03 04:37:58,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,487 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 04:37:58,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 04:37:58,766 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 04:37:58,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 04:37:58,845 INFO L206 MainTranslator]: Completed translation [2023-12-03 04:37:58,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58 WrapperNode [2023-12-03 04:37:58,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 04:37:58,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 04:37:58,848 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 04:37:58,848 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 04:37:58,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,889 INFO L138 Inliner]: procedures = 152, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2023-12-03 04:37:58,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 04:37:58,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 04:37:58,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 04:37:58,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 04:37:58,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,911 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 04:37:58,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 04:37:58,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 04:37:58,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 04:37:58,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:37:58" (1/1) ... [2023-12-03 04:37:58,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 04:37:58,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 04:37:58,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 04:37:58,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 04:37:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-03 04:37:58,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-03 04:37:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-03 04:37:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-03 04:37:58,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 04:37:58,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 04:37:59,063 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 04:37:59,065 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 04:37:59,179 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 04:37:59,216 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 04:37:59,216 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-03 04:37:59,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:37:59 BoogieIcfgContainer [2023-12-03 04:37:59,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 04:37:59,219 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 04:37:59,219 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 04:37:59,227 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 04:37:59,228 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:37:59" (1/1) ... [2023-12-03 04:37:59,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 04:37:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:37:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2023-12-03 04:37:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-12-03 04:37:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-03 04:37:59,284 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 04:37:59,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 04:37:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 04:37:59,472 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 04:37:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:37:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 12 transitions. [2023-12-03 04:37:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-03 04:37:59,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-03 04:37:59,504 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 04:37:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 04:37:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 04:37:59,716 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 04:37:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:37:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2023-12-03 04:37:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-12-03 04:37:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 04:37:59,805 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 04:37:59,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 04:37:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 04:37:59,879 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 04:37:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:37:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 12 transitions. [2023-12-03 04:37:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-03 04:37:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-03 04:37:59,911 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 04:37:59,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 04:37:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 04:38:00,185 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 04:38:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:38:00,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2023-12-03 04:38:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-12-03 04:38:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-03 04:38:00,519 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 04:38:00,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 04:38:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 04:38:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 04:38:01,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:38:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 14 states and 19 transitions. [2023-12-03 04:38:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2023-12-03 04:38:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-03 04:38:01,127 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 04:38:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 04:38:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 04:38:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-03 04:38:01,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:38:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 14 states and 18 transitions. [2023-12-03 04:38:01,376 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2023-12-03 04:38:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-03 04:38:01,376 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 04:38:01,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 04:38:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 04:38:01,526 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 04:38:02,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:38:02,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2023-12-03 04:38:02,436 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2023-12-03 04:38:02,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 04:38:02,437 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 04:38:02,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 04:38:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 04:38:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-03 04:38:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:38:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 16 states and 22 transitions. [2023-12-03 04:38:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2023-12-03 04:38:02,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-03 04:38:02,771 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 04:38:02,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 04:38:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 04:38:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-03 04:38:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 04:38:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-12-03 04:38:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-12-03 04:38:04,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-03 04:38:04,323 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 10 iterations. [2023-12-03 04:38:04,333 INFO L751 CodeCheckObserver]: All specifications hold 5 specifications checked. All of them hold [2023-12-03 04:38:04,367 INFO L560 CodeCheckObserver]: Invariant with dag size 21 [2023-12-03 04:38:04,376 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[~p~0!base] could not be translated [2023-12-03 04:38:04,377 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[~p~0!base][0] could not be translated [2023-12-03 04:38:04,377 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayStoreExpression #valid[#t~malloc208!base := 0] could not be translated [2023-12-03 04:38:04,377 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[~p~0!base] could not be translated [2023-12-03 04:38:04,378 INFO L560 CodeCheckObserver]: Invariant with dag size 6 [2023-12-03 04:38:04,380 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayStoreExpression #valid[#t~malloc208!base := 0] could not be translated [2023-12-03 04:38:04,380 INFO L560 CodeCheckObserver]: Invariant with dag size 3 [2023-12-03 04:38:04,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 04:38:04 ImpRootNode [2023-12-03 04:38:04,381 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 04:38:04,382 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 04:38:04,382 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 04:38:04,382 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 04:38:04,383 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:37:59" (3/4) ... [2023-12-03 04:38:04,385 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-03 04:38:04,391 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-12-03 04:38:04,392 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-03 04:38:04,392 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-03 04:38:04,392 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-12-03 04:38:04,477 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/witness.graphml [2023-12-03 04:38:04,478 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/witness.yml [2023-12-03 04:38:04,478 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 04:38:04,479 INFO L158 Benchmark]: Toolchain (without parser) took 6038.69ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 106.2MB in the beginning and 80.9MB in the end (delta: 25.3MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2023-12-03 04:38:04,480 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory was 66.2MB in the beginning and 66.0MB in the end (delta: 241.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 04:38:04,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.61ms. Allocated memory is still 148.9MB. Free memory was 106.2MB in the beginning and 88.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-03 04:38:04,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.44ms. Allocated memory is still 148.9MB. Free memory was 88.3MB in the beginning and 86.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 04:38:04,481 INFO L158 Benchmark]: Boogie Preprocessor took 24.03ms. Allocated memory is still 148.9MB. Free memory was 86.8MB in the beginning and 85.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 04:38:04,482 INFO L158 Benchmark]: RCFGBuilder took 302.90ms. Allocated memory is still 148.9MB. Free memory was 85.3MB in the beginning and 72.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-03 04:38:04,482 INFO L158 Benchmark]: CodeCheck took 5162.18ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 72.7MB in the beginning and 85.1MB in the end (delta: -12.4MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2023-12-03 04:38:04,483 INFO L158 Benchmark]: Witness Printer took 96.93ms. Allocated memory is still 180.4MB. Free memory was 85.1MB in the beginning and 80.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 04:38:04,485 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, 12 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 174 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 466 IncrementalHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 174 mSolverCounterUnsat, 0 mSDtfsCounter, 466 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 376 GetRequests, 294 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 269 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 5/10 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: 371]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 367]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 367]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 371]: Loop Invariant Derived loop invariant: null * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory was 66.2MB in the beginning and 66.0MB in the end (delta: 241.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.61ms. Allocated memory is still 148.9MB. Free memory was 106.2MB in the beginning and 88.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.44ms. Allocated memory is still 148.9MB. Free memory was 88.3MB in the beginning and 86.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.03ms. Allocated memory is still 148.9MB. Free memory was 86.8MB in the beginning and 85.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 302.90ms. Allocated memory is still 148.9MB. Free memory was 85.3MB in the beginning and 72.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 5162.18ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 72.7MB in the beginning and 85.1MB in the end (delta: -12.4MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * Witness Printer took 96.93ms. Allocated memory is still 180.4MB. Free memory was 85.1MB in the beginning and 80.9MB 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 #length[~p~0!base] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[~p~0!base][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayStoreExpression #valid[#t~malloc208!base := 0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[~p~0!base] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayStoreExpression #valid[#t~malloc208!base := 0] could not be translated RESULT: Ultimate proved your program to be correct! [2023-12-03 04:38:04,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c5bf15-57cc-4cd6-96e3-b632d56b67b8/bin/ukojak-verify-Qdu7aM0XO9/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 Result: TRUE