./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/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 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 ............................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-10-22 10:17:43,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 10:17:43,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 10:17:43,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 10:17:43,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 10:17:43,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 10:17:43,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 10:17:43,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 10:17:43,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 10:17:43,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 10:17:43,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 10:17:43,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 10:17:43,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 10:17:43,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 10:17:43,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 10:17:43,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 10:17:43,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 10:17:43,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 10:17:43,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 10:17:43,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 10:17:43,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 10:17:43,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 10:17:43,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 10:17:43,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 10:17:43,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 10:17:43,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 10:17:43,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 10:17:43,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 10:17:43,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 10:17:43,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 10:17:43,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 10:17:43,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 10:17:43,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 10:17:43,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 10:17:43,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 10:17:43,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 10:17:43,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 10:17:43,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 10:17:43,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 10:17:43,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 10:17:43,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 10:17:43,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2019-10-22 10:17:43,213 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 10:17:43,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 10:17:43,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 10:17:43,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 10:17:43,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 10:17:43,215 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 10:17:43,215 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 10:17:43,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 10:17:43,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 10:17:43,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 10:17:43,216 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 10:17:43,216 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 10:17:43,216 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 10:17:43,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 10:17:43,219 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 10:17:43,220 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 10:17:43,220 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-10-22 10:17:43,220 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-10-22 10:17:43,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 10:17:43,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 10:17:43,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:17:43,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 10:17:43,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 10:17:43,224 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-10-22 10:17:43,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 10:17:43,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/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 -> 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 [2019-10-22 10:17:43,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 10:17:43,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 10:17:43,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 10:17:43,274 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 10:17:43,275 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 10:17:43,275 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2019-10-22 10:17:43,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/data/2d617cec5/a749bb61aa0e42ab86261b58c1ff8deb/FLAGd7e62a234 [2019-10-22 10:17:43,745 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 10:17:43,746 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2019-10-22 10:17:43,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/data/2d617cec5/a749bb61aa0e42ab86261b58c1ff8deb/FLAGd7e62a234 [2019-10-22 10:17:43,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/data/2d617cec5/a749bb61aa0e42ab86261b58c1ff8deb [2019-10-22 10:17:43,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 10:17:43,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 10:17:43,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 10:17:43,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 10:17:43,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 10:17:43,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:17:43" (1/1) ... [2019-10-22 10:17:43,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7dd61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:43, skipping insertion in model container [2019-10-22 10:17:43,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:17:43" (1/1) ... [2019-10-22 10:17:43,787 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 10:17:43,819 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 10:17:44,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:17:44,160 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 10:17:44,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:17:44,246 INFO L192 MainTranslator]: Completed translation [2019-10-22 10:17:44,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44 WrapperNode [2019-10-22 10:17:44,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 10:17:44,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 10:17:44,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 10:17:44,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 10:17:44,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 10:17:44,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 10:17:44,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 10:17:44,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 10:17:44,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 10:17:44,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 10:17:44,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 10:17:44,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 10:17:44,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:17:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/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 [2019-10-22 10:17:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 10:17:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 10:17:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 10:17:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 10:17:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 10:17:44,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 10:17:44,957 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 10:17:44,957 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 10:17:44,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:17:44 BoogieIcfgContainer [2019-10-22 10:17:44,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 10:17:44,959 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-10-22 10:17:44,959 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-10-22 10:17:44,970 INFO L275 PluginConnector]: CodeCheck initialized [2019-10-22 10:17:44,971 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:17:44" (1/1) ... [2019-10-22 10:17:44,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 10:17:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2019-10-22 10:17:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2019-10-22 10:17:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 10:17:45,017 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2019-10-22 10:17:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-10-22 10:17:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-10-22 10:17:45,185 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:45,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:45,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2019-10-22 10:17:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2019-10-22 10:17:45,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 10:17:45,512 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 47 states and 56 transitions. [2019-10-22 10:17:45,550 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2019-10-22 10:17:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 10:17:45,550 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:45,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 47 states and 55 transitions. [2019-10-22 10:17:45,791 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-10-22 10:17:45,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 10:17:45,793 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 50 states and 61 transitions. [2019-10-22 10:17:46,595 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2019-10-22 10:17:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 10:17:46,598 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:47,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 51 states and 64 transitions. [2019-10-22 10:17:47,451 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2019-10-22 10:17:47,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 10:17:47,451 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 52 states and 65 transitions. [2019-10-22 10:17:47,507 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2019-10-22 10:17:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 10:17:47,507 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:48,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:48,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 54 states and 70 transitions. [2019-10-22 10:17:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2019-10-22 10:17:48,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 10:17:48,351 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 50 states and 60 transitions. [2019-10-22 10:17:48,827 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2019-10-22 10:17:48,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 10:17:48,827 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:48,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 49 states and 59 transitions. [2019-10-22 10:17:48,873 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2019-10-22 10:17:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 10:17:48,873 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 10:17:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 48 states and 58 transitions. [2019-10-22 10:17:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2019-10-22 10:17:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 10:17:49,147 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:17:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:49,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 47 states and 57 transitions. [2019-10-22 10:17:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2019-10-22 10:17:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 10:17:49,184 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:17:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 10:17:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:17:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 46 states and 56 transitions. [2019-10-22 10:17:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2019-10-22 10:17:49,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 10:17:49,230 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:17:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:17:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:17:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:17:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:17:49,344 WARN L489 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2019-10-22 10:17:49,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.10 10:17:49 ImpRootNode [2019-10-22 10:17:49,380 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-10-22 10:17:49,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 10:17:49,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 10:17:49,381 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 10:17:49,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:17:44" (3/4) ... [2019-10-22 10:17:49,383 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 10:17:49,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d00bb034-1610-4e58-8a96-49beb5a8f848/bin/ukojak/witness.graphml [2019-10-22 10:17:49,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 10:17:49,469 INFO L168 Benchmark]: Toolchain (without parser) took 5688.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.3 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -120.0 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. [2019-10-22 10:17:49,469 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:17:49,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -180.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 10:17:49,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.91 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 10:17:49,471 INFO L168 Benchmark]: Boogie Preprocessor took 34.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 10:17:49,471 INFO L168 Benchmark]: RCFGBuilder took 630.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. [2019-10-22 10:17:49,472 INFO L168 Benchmark]: CodeCheck took 4421.48 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 41.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 46.9 MB. Max. memory is 11.5 GB. [2019-10-22 10:17:49,472 INFO L168 Benchmark]: Witness Printer took 78.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2019-10-22 10:17:49,475 INFO L335 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, 44 locations, 23 error locations. Result: UNSAFE, OverallTime: 4.3s, OverallIterations: 14, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 24656 SDtfs, 26654 SDslu, 18624 SDs, 0 SdLazy, 105498 SolverSat, 39044 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 622 GetRequests, 527 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2779 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 2745 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 12/15 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: 529]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 [L518] COND FALSE !(length % 2 == 0) [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() [L521] i++ [L521] COND FALSE !(i < length) [L526] i=0 [L526] COND TRUE i