./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL --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 1fa4bda6bd30ba2cdf5e016e12b6593fa4b1ef45b4dc13eb01e28da7c534ab67 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 02:48:19,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 02:48:19,690 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-19 02:48:19,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 02:48:19,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 02:48:19,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 02:48:19,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 02:48:19,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 02:48:19,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 02:48:19,746 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 02:48:19,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 02:48:19,748 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 02:48:19,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 02:48:19,750 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 02:48:19,751 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 02:48:19,751 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 02:48:19,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 02:48:19,752 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 02:48:19,753 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 02:48:19,753 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 02:48:19,754 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 02:48:19,755 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 02:48:19,755 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 02:48:19,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 02:48:19,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:48:19,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 02:48:19,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 02:48:19,758 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 02:48:19,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 02:48:19,758 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_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa4bda6bd30ba2cdf5e016e12b6593fa4b1ef45b4dc13eb01e28da7c534ab67 [2023-11-19 02:48:20,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 02:48:20,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 02:48:20,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 02:48:20,071 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 02:48:20,071 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 02:48:20,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2023-11-19 02:48:23,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 02:48:23,443 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 02:48:23,443 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/sv-benchmarks/c/array-memsafety/cstrlen_unsafe.i [2023-11-19 02:48:23,468 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/data/582c7fb6b/cea1e24f3e434db1b71f543cf9952c45/FLAG7da1fc015 [2023-11-19 02:48:23,482 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/data/582c7fb6b/cea1e24f3e434db1b71f543cf9952c45 [2023-11-19 02:48:23,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 02:48:23,487 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 02:48:23,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 02:48:23,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 02:48:23,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 02:48:23,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:48:23" (1/1) ... [2023-11-19 02:48:23,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:23, skipping insertion in model container [2023-11-19 02:48:23,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:48:23" (1/1) ... [2023-11-19 02:48:23,551 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 02:48:23,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:48:23,932 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 02:48:24,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 02:48:24,036 INFO L206 MainTranslator]: Completed translation [2023-11-19 02:48:24,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24 WrapperNode [2023-11-19 02:48:24,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 02:48:24,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 02:48:24,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 02:48:24,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 02:48:24,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,082 INFO L138 Inliner]: procedures = 118, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-11-19 02:48:24,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 02:48:24,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 02:48:24,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 02:48:24,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 02:48:24,100 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,118 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 02:48:24,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 02:48:24,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 02:48:24,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 02:48:24,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 02:48:24,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 02:48:24,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 02:48:24,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 02:48:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 02:48:24,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 02:48:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 02:48:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 02:48:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 02:48:24,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 02:48:24,335 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 02:48:24,336 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 02:48:24,480 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 02:48:24,541 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 02:48:24,541 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 02:48:24,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:48:24 BoogieIcfgContainer [2023-11-19 02:48:24,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 02:48:24,547 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 02:48:24,547 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 02:48:24,560 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 02:48:24,561 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:48:24" (1/1) ... [2023-11-19 02:48:24,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 02:48:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 22 states and 24 transitions. [2023-11-19 02:48:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-11-19 02:48:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 02:48:24,628 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 21 states and 23 transitions. [2023-11-19 02:48:24,946 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-19 02:48:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 02:48:24,946 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:24,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 23 states and 29 transitions. [2023-11-19 02:48:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-11-19 02:48:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 02:48:25,618 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:25,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 23 states and 32 transitions. [2023-11-19 02:48:26,403 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2023-11-19 02:48:26,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 02:48:26,406 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:26,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 25 states and 37 transitions. [2023-11-19 02:48:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 37 transitions. [2023-11-19 02:48:27,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 02:48:27,363 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:27,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 26 states and 38 transitions. [2023-11-19 02:48:27,506 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2023-11-19 02:48:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 02:48:27,507 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 28 states and 42 transitions. [2023-11-19 02:48:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2023-11-19 02:48:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 02:48:28,171 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:28,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 29 states and 44 transitions. [2023-11-19 02:48:29,644 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2023-11-19 02:48:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 02:48:29,645 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 26 transitions. [2023-11-19 02:48:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-19 02:48:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 02:48:31,505 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:32,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 21 states and 24 transitions. [2023-11-19 02:48:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-11-19 02:48:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 02:48:32,788 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:32,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2023-11-19 02:48:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-19 02:48:34,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 02:48:34,235 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:34,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 02:48:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 02:48:35,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 02:48:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 28 states and 32 transitions. [2023-11-19 02:48:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-11-19 02:48:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 02:48:35,049 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 02:48:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 02:48:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:48:35,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:48:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:48:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:48:35,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 02:48:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 02:48:35,179 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 12 iterations. [2023-11-19 02:48:35,204 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-19 02:48:35,217 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-19 02:48:35,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 02:48:35 ImpRootNode [2023-11-19 02:48:35,224 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 02:48:35,224 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 02:48:35,225 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 02:48:35,225 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 02:48:35,226 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:48:24" (3/4) ... [2023-11-19 02:48:35,227 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 02:48:35,231 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-19 02:48:35,232 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated [2023-11-19 02:48:35,270 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 02:48:35,270 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 02:48:35,271 INFO L158 Benchmark]: Toolchain (without parser) took 11784.13ms. Allocated memory was 134.2MB in the beginning and 188.7MB in the end (delta: 54.5MB). Free memory was 91.8MB in the beginning and 155.3MB in the end (delta: -63.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:48:35,272 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 02:48:35,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 548.10ms. Allocated memory is still 134.2MB. Free memory was 91.2MB in the beginning and 75.4MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 02:48:35,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.32ms. Allocated memory is still 134.2MB. Free memory was 75.4MB in the beginning and 73.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:48:35,273 INFO L158 Benchmark]: Boogie Preprocessor took 59.95ms. Allocated memory is still 134.2MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:48:35,274 INFO L158 Benchmark]: RCFGBuilder took 396.53ms. Allocated memory is still 134.2MB. Free memory was 71.8MB in the beginning and 56.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 02:48:35,275 INFO L158 Benchmark]: CodeCheck took 10676.59ms. Allocated memory was 134.2MB in the beginning and 188.7MB in the end (delta: 54.5MB). Free memory was 56.5MB in the beginning and 157.3MB in the end (delta: -100.9MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. [2023-11-19 02:48:35,275 INFO L158 Benchmark]: Witness Printer took 45.96ms. Allocated memory is still 188.7MB. Free memory was 157.3MB in the beginning and 155.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 02:48:35,278 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, 22 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 10.6s, OverallIterations: 12, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 154 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 243 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 887 IncrementalHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 243 mSolverCounterUnsat, 22 mSDtfsCounter, 887 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 467 GetRequests, 340 SyntacticMatches, 11 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5151 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 599 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2/5 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: [L537] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=2, nondetString={9646:0}] [L521] COND TRUE i < length - 1 [L523] nondetString[i] = __VERIFIER_nondet_char() [L521] i++ VAL [i=1, length=2, nondetString={9646:0}] [L521] COND FALSE !(i < length - 1) [L526] nondetString[length-1] = '\0' [L527] return nondetString; [L537] RET, EXPR build_nondet_String() [L537] char* p = build_nondet_String(); [L538] CALL cstrlen(p) [L531] const char *p = s; VAL [p={9646:0}, s={9646:0}, s={9646:0}] [L532] EXPR \read(*p) VAL [p={9646:0}, s={9646:0}, s={9646:0}] [L532] COND TRUE *p != '\0' [L533] p = p+2 VAL [p={9646:2}, s={9646:0}, s={9646:0}] [L532] \read(*p) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 548.10ms. Allocated memory is still 134.2MB. Free memory was 91.2MB in the beginning and 75.4MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.32ms. Allocated memory is still 134.2MB. Free memory was 75.4MB in the beginning and 73.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.95ms. Allocated memory is still 134.2MB. Free memory was 73.3MB in the beginning and 71.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 396.53ms. Allocated memory is still 134.2MB. Free memory was 71.8MB in the beginning and 56.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 10676.59ms. Allocated memory was 134.2MB in the beginning and 188.7MB in the end (delta: 54.5MB). Free memory was 56.5MB in the beginning and 157.3MB in the end (delta: -100.9MB). Peak memory consumption was 69.1MB. Max. memory is 16.1GB. * Witness Printer took 45.96ms. Allocated memory is still 188.7MB. Free memory was 157.3MB in the beginning and 155.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 02:48:35,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16f110e9-3067-4733-a534-dd6ed694c5d4/bin/ukojak-verify-G8NBE6pJGL/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)