./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/diff_usafe.c --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_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff_usafe.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi --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 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:11:04,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:11:05,006 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-24 22:11:05,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:11:05,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 22:11:05,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:11:05,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:11:05,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:11:05,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:11:05,043 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:11:05,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:11:05,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:11:05,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:11:05,046 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:11:05,047 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:11:05,047 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:11:05,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:11:05,048 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:11:05,049 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:11:05,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:11:05,050 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:11:05,051 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:11:05,051 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:11:05,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:11:05,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:11:05,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:11:05,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:11:05,054 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 22:11:05,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:11:05,055 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_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 [2023-11-24 22:11:05,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:11:05,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:11:05,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:11:05,378 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:11:05,379 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:11:05,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/array-memsafety/diff_usafe.c [2023-11-24 22:11:08,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:11:08,814 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:11:08,815 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/sv-benchmarks/c/array-memsafety/diff_usafe.c [2023-11-24 22:11:08,825 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/data/1df012e76/7b4f8bab3160446cbe7f6222ba1053f0/FLAGd5462a38a [2023-11-24 22:11:08,845 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/data/1df012e76/7b4f8bab3160446cbe7f6222ba1053f0 [2023-11-24 22:11:08,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:11:08,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:11:08,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:11:08,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:11:08,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:11:08,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:11:08" (1/1) ... [2023-11-24 22:11:08,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8e48c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:08, skipping insertion in model container [2023-11-24 22:11:08,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:11:08" (1/1) ... [2023-11-24 22:11:08,888 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:11:09,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:11:09,046 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:11:09,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:11:09,072 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:11:09,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09 WrapperNode [2023-11-24 22:11:09,072 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:11:09,073 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:11:09,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:11:09,074 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:11:09,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,088 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,118 INFO L138 Inliner]: procedures = 8, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-11-24 22:11:09,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:11:09,119 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:11:09,119 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:11:09,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:11:09,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:11:09,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:11:09,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:11:09,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:11:09,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:11:09,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:11:09,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:11:09,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:11:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 22:11:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:11:09,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:11:09,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 22:11:09,293 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:11:09,294 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:11:09,501 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:11:09,543 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:11:09,543 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:11:09,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:11:09 BoogieIcfgContainer [2023-11-24 22:11:09,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:11:09,546 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:11:09,546 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:11:09,556 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:11:09,557 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:11:09" (1/1) ... [2023-11-24 22:11:09,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:11:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:11:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 20 states and 22 transitions. [2023-11-24 22:11:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-24 22:11:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 22:11:09,618 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:11:09,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:11:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:11:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:11:09,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:11:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 22 states and 25 transitions. [2023-11-24 22:11:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-11-24 22:11:09,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 22:11:09,824 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:11:09,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:11:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:11:09,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:11:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:11:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:11:09,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:11:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:11:10,018 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-24 22:11:10,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:11:10 ImpRootNode [2023-11-24 22:11:10,063 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:11:10,064 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:11:10,064 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:11:10,065 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:11:10,065 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:11:09" (3/4) ... [2023-11-24 22:11:10,066 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 22:11:10,114 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 22:11:10,115 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:11:10,116 INFO L158 Benchmark]: Toolchain (without parser) took 1261.51ms. Allocated memory was 123.7MB in the beginning and 167.8MB in the end (delta: 44.0MB). Free memory was 90.8MB in the beginning and 134.7MB in the end (delta: -43.8MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. [2023-11-24 22:11:10,117 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 123.7MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:11:10,117 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.11ms. Allocated memory is still 123.7MB. Free memory was 90.4MB in the beginning and 80.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 22:11:10,118 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.09ms. Allocated memory is still 123.7MB. Free memory was 80.3MB in the beginning and 78.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:11:10,119 INFO L158 Benchmark]: Boogie Preprocessor took 23.75ms. Allocated memory is still 123.7MB. Free memory was 78.6MB in the beginning and 77.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:11:10,119 INFO L158 Benchmark]: RCFGBuilder took 401.89ms. Allocated memory is still 123.7MB. Free memory was 77.5MB in the beginning and 63.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 22:11:10,120 INFO L158 Benchmark]: CodeCheck took 517.57ms. Allocated memory was 123.7MB in the beginning and 167.8MB in the end (delta: 44.0MB). Free memory was 63.2MB in the beginning and 137.7MB in the end (delta: -74.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:11:10,121 INFO L158 Benchmark]: Witness Printer took 50.75ms. Allocated memory is still 167.8MB. Free memory was 136.8MB in the beginning and 134.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:11:10,125 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, 20 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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: [L30] int *A; [L31] int Alen = __VERIFIER_nondet_int(); [L32] int *B; [L33] int Blen = __VERIFIER_nondet_int(); [L34] int *D; [L35] CALL diff(A, Alen, B, Blen, D) [L5] int k = 0; [L6] int i = 0; [L7] int l1 = Alen; [L8] int l2 = Blen; [L9] int found; VAL [A={5:6}, A={5:6}, Alen=1, B={2:4}, B={2:4}, Blen=1, D={3:7}, D={3:7}, \old(Alen)=1, \old(Blen)=1, i=0, k=0, l1=1, l2=1] [L11] COND TRUE i < l1 [L12] int j = 0; [L13] found = 0 VAL [A={5:6}, A={5:6}, Alen=1, B={2:4}, B={2:4}, Blen=1, D={3:7}, D={3:7}, \old(Alen)=1, \old(Blen)=1, found=0, i=0, j=0, k=0, l1=1, l2=1] [L14] COND TRUE j < l2 && !found VAL [A={5:6}, A={5:6}, Alen=1, B={2:4}, B={2:4}, Blen=1, D={3:7}, D={3:7}, \old(Alen)=1, \old(Blen)=1, found=0, i=0, j=0, k=0, l1=1, l2=1] [L15] A[i] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 123.7MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.11ms. Allocated memory is still 123.7MB. Free memory was 90.4MB in the beginning and 80.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.09ms. Allocated memory is still 123.7MB. Free memory was 80.3MB in the beginning and 78.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.75ms. Allocated memory is still 123.7MB. Free memory was 78.6MB in the beginning and 77.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 401.89ms. Allocated memory is still 123.7MB. Free memory was 77.5MB in the beginning and 63.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 517.57ms. Allocated memory was 123.7MB in the beginning and 167.8MB in the end (delta: 44.0MB). Free memory was 63.2MB in the beginning and 137.7MB in the end (delta: -74.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 50.75ms. Allocated memory is still 167.8MB. Free memory was 136.8MB in the beginning and 134.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-11-24 22:11:10,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99dcd7-d624-4977-a97b-4900bc64fcff/bin/ukojak-verify-afCqCEvfdi/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)