./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/loops/invert_string-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 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_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/invert_string-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC --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 e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:23:27,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:23:27,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-23 20:23:27,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:23:27,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:23:27,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:23:27,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:23:27,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:23:27,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:23:27,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:23:27,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:23:27,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:23:27,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:23:27,602 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 20:23:27,603 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 20:23:27,603 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 20:23:27,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:23:27,604 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:23:27,605 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:23:27,605 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:23:27,606 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:23:27,607 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:23:27,607 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:23:27,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:23:27,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:23:27,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:23:27,610 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:23:27,611 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:23:27,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:23:27,612 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_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 [2023-11-23 20:23:27,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:23:27,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:23:27,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:23:27,953 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:23:27,954 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:23:27,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/loops/invert_string-2.c [2023-11-23 20:23:31,042 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:23:31,321 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:23:31,321 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/sv-benchmarks/c/loops/invert_string-2.c [2023-11-23 20:23:31,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/data/c7bb4a4ce/6ffa545d7c044b0397522e985e309017/FLAGc85c36b5e [2023-11-23 20:23:31,346 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/data/c7bb4a4ce/6ffa545d7c044b0397522e985e309017 [2023-11-23 20:23:31,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:23:31,350 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:23:31,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:23:31,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:23:31,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:23:31,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5043cfb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31, skipping insertion in model container [2023-11-23 20:23:31,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,388 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:23:31,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:23:31,659 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:23:31,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:23:31,718 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:23:31,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31 WrapperNode [2023-11-23 20:23:31,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:23:31,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:23:31,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:23:31,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:23:31,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,783 INFO L138 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-11-23 20:23:31,783 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:23:31,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:23:31,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:23:31,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:23:31,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,823 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:23:31,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:23:31,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:23:31,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:23:31,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:23:31" (1/1) ... [2023-11-23 20:23:31,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:23:31,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:23:31,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:23:31,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:23:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:23:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:23:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:23:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:23:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:23:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:23:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:23:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:23:32,034 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:23:32,037 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:23:32,325 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:23:32,403 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:23:32,404 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 20:23:32,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:23:32 BoogieIcfgContainer [2023-11-23 20:23:32,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:23:32,407 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:23:32,407 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:23:32,418 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:23:32,419 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:23:32" (1/1) ... [2023-11-23 20:23:32,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:23:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:23:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 29 states and 32 transitions. [2023-11-23 20:23:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-11-23 20:23:32,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:23:32,483 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:23:32,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:23:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:23:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:23:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:23:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 28 states and 31 transitions. [2023-11-23 20:23:32,901 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-11-23 20:23:32,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:23:32,902 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:23:32,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:23:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:23:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:23:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:23:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 30 states and 35 transitions. [2023-11-23 20:23:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-11-23 20:23:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:23:33,714 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:23:33,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:23:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:23:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:23:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:23:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 29 states and 34 transitions. [2023-11-23 20:23:33,820 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-11-23 20:23:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:23:33,820 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:23:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:23:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:23:33,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:23:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:23:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:23:33,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:23:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:23:33,898 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2023-11-23 20:23:33,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:23:33 ImpRootNode [2023-11-23 20:23:33,920 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:23:33,921 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:23:33,921 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:23:33,922 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:23:33,922 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:23:32" (3/4) ... [2023-11-23 20:23:33,923 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 20:23:33,959 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16c314a5-acdf-4bb7-9827-fb1666265f1d/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 20:23:33,959 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:23:33,960 INFO L158 Benchmark]: Toolchain (without parser) took 2609.30ms. Allocated memory is still 157.3MB. Free memory was 127.8MB in the beginning and 72.5MB in the end (delta: 55.3MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2023-11-23 20:23:33,960 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 107.0MB. Free memory was 58.6MB in the beginning and 58.5MB in the end (delta: 127.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:23:33,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.81ms. Allocated memory is still 157.3MB. Free memory was 127.8MB in the beginning and 117.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 20:23:33,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.94ms. Allocated memory is still 157.3MB. Free memory was 117.0MB in the beginning and 115.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:23:33,962 INFO L158 Benchmark]: Boogie Preprocessor took 65.68ms. Allocated memory is still 157.3MB. Free memory was 115.3MB in the beginning and 114.3MB in the end (delta: 942.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:23:33,963 INFO L158 Benchmark]: RCFGBuilder took 555.35ms. Allocated memory is still 157.3MB. Free memory was 114.3MB in the beginning and 98.6MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:23:33,963 INFO L158 Benchmark]: CodeCheck took 1513.57ms. Allocated memory is still 157.3MB. Free memory was 98.1MB in the beginning and 74.6MB in the end (delta: 23.5MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-11-23 20:23:33,964 INFO L158 Benchmark]: Witness Printer took 37.81ms. Allocated memory is still 157.3MB. Free memory was 74.6MB in the beginning and 72.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:23:33,967 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, 29 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 6 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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: [L15] int MAX = __VERIFIER_nondet_uint(); [L16] char str1[MAX], str2[MAX]; [L17] int cont, i, j; [L18] cont = 0 [L20] i=0 VAL [MAX=0, cont=0, i=0, str1={17625:0}, str2={17624:0}] [L20] COND FALSE !(i