./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/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 e3c371bf2b529b286440432969843cbb456509fe .................................................................................................................................................................................................................................. 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 0.1.23-635dfa2 [2018-12-01 15:06:49,191 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 15:06:49,192 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 15:06:49,198 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 15:06:49,198 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 15:06:49,198 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 15:06:49,199 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 15:06:49,200 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 15:06:49,200 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 15:06:49,201 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 15:06:49,201 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 15:06:49,201 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 15:06:49,202 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 15:06:49,202 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 15:06:49,203 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 15:06:49,203 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 15:06:49,203 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 15:06:49,204 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 15:06:49,205 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 15:06:49,206 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 15:06:49,206 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 15:06:49,207 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 15:06:49,208 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 15:06:49,208 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 15:06:49,208 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 15:06:49,208 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 15:06:49,209 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 15:06:49,209 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 15:06:49,209 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 15:06:49,210 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 15:06:49,210 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 15:06:49,210 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 15:06:49,210 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 15:06:49,211 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 15:06:49,211 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 15:06:49,211 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 15:06:49,211 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-01 15:06:49,218 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 15:06:49,218 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 15:06:49,219 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 15:06:49,219 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 15:06:49,219 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 15:06:49,219 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 15:06:49,219 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 15:06:49,219 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 15:06:49,219 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 15:06:49,219 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 15:06:49,220 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-01 15:06:49,220 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-01 15:06:49,220 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-01 15:06:49,220 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 15:06:49,220 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 15:06:49,220 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 15:06:49,220 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-01 15:06:49,220 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-01 15:06:49,220 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 15:06:49,220 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 15:06:49,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-01 15:06:49,221 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 15:06:49,221 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 15:06:49,221 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-01 15:06:49,221 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 15:06:49,221 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/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 -> e3c371bf2b529b286440432969843cbb456509fe [2018-12-01 15:06:49,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 15:06:49,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 15:06:49,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 15:06:49,247 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 15:06:49,248 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 15:06:49,248 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe_false-valid-deref.i [2018-12-01 15:06:49,283 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/data/086b25c2c/f56e88abd6a44476a7b17cdd2ee74e13/FLAG190b873d7 [2018-12-01 15:06:49,711 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 15:06:49,712 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe_false-valid-deref.i [2018-12-01 15:06:49,718 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/data/086b25c2c/f56e88abd6a44476a7b17cdd2ee74e13/FLAG190b873d7 [2018-12-01 15:06:49,727 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/data/086b25c2c/f56e88abd6a44476a7b17cdd2ee74e13 [2018-12-01 15:06:49,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 15:06:49,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 15:06:49,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 15:06:49,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 15:06:49,733 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 15:06:49,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:06:49" (1/1) ... [2018-12-01 15:06:49,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac4e85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:49, skipping insertion in model container [2018-12-01 15:06:49,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:06:49" (1/1) ... [2018-12-01 15:06:49,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 15:06:49,767 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 15:06:49,925 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 15:06:49,932 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 15:06:49,988 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 15:06:50,007 INFO L195 MainTranslator]: Completed translation [2018-12-01 15:06:50,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50 WrapperNode [2018-12-01 15:06:50,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 15:06:50,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 15:06:50,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 15:06:50,008 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 15:06:50,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 15:06:50,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 15:06:50,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 15:06:50,035 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 15:06:50,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 15:06:50,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 15:06:50,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 15:06:50,051 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 15:06:50,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:06:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/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 [2018-12-01 15:06:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 15:06:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 15:06:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 15:06:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 15:06:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 15:06:50,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 15:06:50,336 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 15:06:50,337 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-01 15:06:50,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:06:50 BoogieIcfgContainer [2018-12-01 15:06:50,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 15:06:50,338 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-01 15:06:50,338 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-01 15:06:50,344 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-01 15:06:50,344 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:06:50" (1/1) ... [2018-12-01 15:06:50,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 15:06:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:06:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 39 states and 42 transitions. [2018-12-01 15:06:50,372 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-12-01 15:06:50,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-01 15:06:50,373 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:06:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:06:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 15:06:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:06:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 40 states and 44 transitions. [2018-12-01 15:06:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-12-01 15:06:50,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-01 15:06:50,507 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:06:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 15:06:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 15:06:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 15:06:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 43 states and 51 transitions. [2018-12-01 15:06:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-01 15:06:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-01 15:06:50,615 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 15:06:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 15:06:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 15:06:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 15:06:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 15:06:50,679 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2018-12-01 15:06:50,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 03:06:50 ImpRootNode [2018-12-01 15:06:50,696 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-01 15:06:50,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 15:06:50,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 15:06:50,697 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 15:06:50,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:06:50" (3/4) ... [2018-12-01 15:06:50,699 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 15:06:50,724 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ca8fef09-9681-4616-90fb-7da74b3457af/bin-2019/ukojak/witness.graphml [2018-12-01 15:06:50,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 15:06:50,725 INFO L168 Benchmark]: Toolchain (without parser) took 995.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 951.7 MB in the beginning and 1.0 GB in the end (delta: -51.8 MB). Peak memory consumption was 53.1 MB. Max. memory is 11.5 GB. [2018-12-01 15:06:50,726 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 15:06:50,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2018-12-01 15:06:50,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-01 15:06:50,727 INFO L168 Benchmark]: Boogie Preprocessor took 16.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-01 15:06:50,727 INFO L168 Benchmark]: RCFGBuilder took 286.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 11.5 GB. [2018-12-01 15:06:50,728 INFO L168 Benchmark]: CodeCheck took 359.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 11.5 GB. [2018-12-01 15:06:50,728 INFO L168 Benchmark]: Witness Printer took 27.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-01 15:06:50,730 INFO L336 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, 47 locations, 21 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 12 SDslu, 8 SDs, 0 SdLazy, 46 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 545]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L555] int N = __VERIFIER_nondet_int(); [L556] int M = __VERIFIER_nondet_int(); [L557] COND TRUE N < 1 [L558] N = 1 [L560] COND FALSE !(M < 1) [L563] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L564] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L565] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L566] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L542] int i, j; [L543] j = 1 [L543] COND TRUE j <= N [L544] i = 1 [L544] COND TRUE i <= M [L545] size[j] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -142.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.55 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 286.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 11.5 GB. * CodeCheck took 359.03 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 11.5 GB. * Witness Printer took 27.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...