./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak --witnessprinter.witness.filename witness.graphml --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 aa3ae4378a5284e50be7191d52900376e96b0fdc ........................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 18:02:04,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:02:04,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:02:04,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:02:04,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:02:04,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:02:04,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:02:04,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:02:04,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:02:04,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:02:04,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:02:04,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:02:04,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:02:04,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:02:04,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:02:04,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:02:04,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:02:04,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:02:04,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:02:04,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:02:04,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:02:04,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:02:04,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:02:04,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:02:04,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:02:04,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:02:04,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:02:04,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:02:04,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:02:04,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:02:04,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:02:04,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:02:04,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:02:04,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:02:04,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:02:04,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:02:04,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:02:04,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:02:04,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:02:04,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:02:04,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:02:04,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-12-01 18:02:04,316 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:02:04,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:02:04,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:02:04,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:02:04,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:02:04,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 18:02:04,321 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 18:02:04,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:02:04,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 18:02:04,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:02:04,323 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 18:02:04,323 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 18:02:04,324 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 18:02:04,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:02:04,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 18:02:04,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:02:04,325 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:02:04,325 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:02:04,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:02:04,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:02:04,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:02:04,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:02:04,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:02:04,326 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:02:04,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:02:04,327 INFO L138 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-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa3ae4378a5284e50be7191d52900376e96b0fdc [2020-12-01 18:02:04,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:02:04,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:02:04,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:02:04,669 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:02:04,670 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:02:04,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2020-12-01 18:02:04,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/data/0040607fb/5a2ec743d3584813a3cf182ca6b53c9c/FLAGf9f6427a4 [2020-12-01 18:02:05,270 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:02:05,271 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2020-12-01 18:02:05,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/data/0040607fb/5a2ec743d3584813a3cf182ca6b53c9c/FLAGf9f6427a4 [2020-12-01 18:02:05,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/data/0040607fb/5a2ec743d3584813a3cf182ca6b53c9c [2020-12-01 18:02:05,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:02:05,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:02:05,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:02:05,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:02:05,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:02:05,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:05,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d5da63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05, skipping insertion in model container [2020-12-01 18:02:05,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:05,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:02:05,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:02:05,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:02:05,935 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:02:05,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:02:05,977 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:02:05,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05 WrapperNode [2020-12-01 18:02:05,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:02:05,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:02:05,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:02:05,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:02:05,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:05,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:06,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:02:06,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:02:06,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:02:06,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:02:06,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:06,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:06,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:06,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:06,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:06,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:06,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... [2020-12-01 18:02:06,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:02:06,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:02:06,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:02:06,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:02:06,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:02:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:02:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 18:02:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:02:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:02:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 18:02:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 18:02:06,412 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:02:06,413 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 18:02:06,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:02:06 BoogieIcfgContainer [2020-12-01 18:02:06,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:02:06,424 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:02:06,425 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:02:06,450 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:02:06,450 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:02:06" (1/1) ... [2020-12-01 18:02:06,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:02:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2020-12-01 18:02:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-01 18:02:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 18:02:06,513 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:02:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:02:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2020-12-01 18:02:06,703 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-12-01 18:02:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 18:02:06,704 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:02:06,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:02:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2020-12-01 18:02:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-01 18:02:06,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 18:02:06,804 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:02:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:02:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:02:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2020-12-01 18:02:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-01 18:02:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 18:02:06,939 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:02:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:02:06,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:02:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:02:06,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:02:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:02:07,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:02:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 18:02:07,071 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 18:02:07,093 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2020-12-01 18:02:07,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:02:07 ImpRootNode [2020-12-01 18:02:07,120 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:02:07,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:02:07,121 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:02:07,121 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:02:07,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:02:06" (3/4) ... [2020-12-01 18:02:07,124 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 18:02:07,164 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_96840e11-b5f4-4d1b-b26b-9adfa788b068/bin/ukojak/witness.graphml [2020-12-01 18:02:07,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:02:07,168 INFO L168 Benchmark]: Toolchain (without parser) took 1493.27 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 59.3 MB in the beginning and 70.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:07,169 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory was 75.2 MB in the beginning and 75.2 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:02:07,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.93 ms. Allocated memory is still 94.4 MB. Free memory was 59.1 MB in the beginning and 72.6 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:07,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.40 ms. Allocated memory is still 94.4 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:02:07,173 INFO L168 Benchmark]: Boogie Preprocessor took 28.89 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 70.3 MB in the end (delta: 998.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:07,174 INFO L168 Benchmark]: RCFGBuilder took 378.28 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 58.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:07,176 INFO L168 Benchmark]: CodeCheck took 695.42 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 58.5 MB in the beginning and 71.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:07,177 INFO L168 Benchmark]: Witness Printer took 44.35 ms. Allocated memory is still 117.4 MB. Free memory was 71.9 MB in the beginning and 70.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:02:07,185 INFO L339 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, 10 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 14 SDslu, 4 SDs, 0 SdLazy, 82 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; [L3] COND TRUE i < 2 [L4] int a[10]; [L5] COND TRUE i == 0 [L6] p = a [L3] i++ [L3] COND TRUE i < 2 [L4] int a[10]; [L5] COND FALSE !(i == 0) [L8] p[0] = 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory was 75.2 MB in the beginning and 75.2 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.93 ms. Allocated memory is still 94.4 MB. Free memory was 59.1 MB in the beginning and 72.6 MB in the end (delta: -13.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.40 ms. Allocated memory is still 94.4 MB. Free memory was 72.6 MB in the beginning and 71.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.89 ms. Allocated memory is still 94.4 MB. Free memory was 71.3 MB in the beginning and 70.3 MB in the end (delta: 998.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 378.28 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 58.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 695.42 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 58.5 MB in the beginning and 71.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 44.35 ms. Allocated memory is still 117.4 MB. Free memory was 71.9 MB in the beginning and 70.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...