./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_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_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/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 860f0cef2a2bc5e57220324712ded9016daf6ef5 ........................................................................................................................................................................................................................................................................................... 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 [2018-12-09 18:30:43,740 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 18:30:43,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 18:30:43,747 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 18:30:43,747 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 18:30:43,747 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 18:30:43,748 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 18:30:43,749 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 18:30:43,750 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 18:30:43,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 18:30:43,750 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 18:30:43,751 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 18:30:43,751 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 18:30:43,751 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 18:30:43,752 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 18:30:43,752 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 18:30:43,753 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 18:30:43,753 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 18:30:43,754 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 18:30:43,755 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 18:30:43,756 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 18:30:43,756 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 18:30:43,757 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 18:30:43,757 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 18:30:43,757 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 18:30:43,758 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 18:30:43,758 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 18:30:43,759 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 18:30:43,759 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 18:30:43,760 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 18:30:43,760 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 18:30:43,760 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 18:30:43,760 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 18:30:43,760 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 18:30:43,761 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 18:30:43,761 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 18:30:43,761 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-09 18:30:43,768 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 18:30:43,768 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 18:30:43,769 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 18:30:43,769 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 18:30:43,769 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 18:30:43,770 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 18:30:43,771 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-09 18:30:43,771 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-09 18:30:43,771 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 18:30:43,771 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 18:30:43,771 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-09 18:30:43,771 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 18:30:43,771 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 18:30:43,771 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-09 18:30:43,771 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 18:30:43,771 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_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/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 -> 860f0cef2a2bc5e57220324712ded9016daf6ef5 [2018-12-09 18:30:43,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 18:30:43,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 18:30:43,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 18:30:43,803 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 18:30:43,803 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 18:30:43,804 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-12-09 18:30:43,843 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/data/2cdd4834c/88c1df8533ea4fe4bdac878469d8526f/FLAG068bc7a8d [2018-12-09 18:30:44,294 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 18:30:44,295 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-12-09 18:30:44,300 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/data/2cdd4834c/88c1df8533ea4fe4bdac878469d8526f/FLAG068bc7a8d [2018-12-09 18:30:44,309 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/data/2cdd4834c/88c1df8533ea4fe4bdac878469d8526f [2018-12-09 18:30:44,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 18:30:44,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 18:30:44,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 18:30:44,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 18:30:44,315 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 18:30:44,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e809d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44, skipping insertion in model container [2018-12-09 18:30:44,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 18:30:44,348 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 18:30:44,513 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 18:30:44,520 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 18:30:44,583 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 18:30:44,612 INFO L195 MainTranslator]: Completed translation [2018-12-09 18:30:44,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44 WrapperNode [2018-12-09 18:30:44,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 18:30:44,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 18:30:44,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 18:30:44,613 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 18:30:44,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 18:30:44,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 18:30:44,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 18:30:44,639 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 18:30:44,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 18:30:44,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 18:30:44,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 18:30:44,655 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 18:30:44,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:30:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/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 [2018-12-09 18:30:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 18:30:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 18:30:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 18:30:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 18:30:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 18:30:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 18:30:44,917 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 18:30:44,917 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-09 18:30:44,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:30:44 BoogieIcfgContainer [2018-12-09 18:30:44,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 18:30:44,918 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-09 18:30:44,918 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-09 18:30:44,924 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-09 18:30:44,924 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:30:44" (1/1) ... [2018-12-09 18:30:44,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:30:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 40 states and 44 transitions. [2018-12-09 18:30:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-12-09 18:30:44,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-09 18:30:44,953 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 42 states and 48 transitions. [2018-12-09 18:30:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2018-12-09 18:30:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-09 18:30:45,054 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 44 states and 53 transitions. [2018-12-09 18:30:45,249 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 18:30:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-09 18:30:45,251 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:45,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 45 states and 54 transitions. [2018-12-09 18:30:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2018-12-09 18:30:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-09 18:30:45,271 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 46 states and 55 transitions. [2018-12-09 18:30:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-12-09 18:30:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 18:30:45,385 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:45,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:45,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 45 states and 54 transitions. [2018-12-09 18:30:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2018-12-09 18:30:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 18:30:45,442 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:45,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 44 states and 53 transitions. [2018-12-09 18:30:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 18:30:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-09 18:30:45,525 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 43 states and 52 transitions. [2018-12-09 18:30:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-09 18:30:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-09 18:30:45,544 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 42 states and 51 transitions. [2018-12-09 18:30:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2018-12-09 18:30:45,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 18:30:45,599 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 37 states and 44 transitions. [2018-12-09 18:30:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2018-12-09 18:30:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 18:30:45,620 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:30:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:30:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 18:30:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 42 states and 54 transitions. [2018-12-09 18:30:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2018-12-09 18:30:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 18:30:46,203 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 18:30:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 18:30:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 18:30:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 18:30:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 18:30:46,256 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2018-12-09 18:30:46,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.12 06:30:46 ImpRootNode [2018-12-09 18:30:46,271 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-09 18:30:46,272 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 18:30:46,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 18:30:46,272 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 18:30:46,272 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:30:44" (3/4) ... [2018-12-09 18:30:46,274 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 18:30:46,299 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d552a82d-c2cc-4d21-8764-dd6a2829bcc9/bin-2019/ukojak/witness.graphml [2018-12-09 18:30:46,299 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 18:30:46,300 INFO L168 Benchmark]: Toolchain (without parser) took 1987.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -99.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2018-12-09 18:30:46,301 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-12-09 18:30:46,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -161.4 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-09 18:30:46,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.25 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 18:30:46,301 INFO L168 Benchmark]: Boogie Preprocessor took 15.61 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. [2018-12-09 18:30:46,302 INFO L168 Benchmark]: RCFGBuilder took 262.33 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. [2018-12-09 18:30:46,302 INFO L168 Benchmark]: CodeCheck took 1353.77 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: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-09 18:30:46,302 INFO L168 Benchmark]: Witness Printer took 27.47 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 18:30:46,305 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, 53 locations, 21 error locations. UNSAFE Result, 1.3s OverallTime, 11 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2368 SDtfs, 2308 SDslu, 2596 SDs, 0 SdLazy, 12080 SolverSat, 4156 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 383 GetRequests, 323 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3/4 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: 549]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j, tmp; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 [L544] COND FALSE !(length % 2 == 0) [L545] int *arr = __builtin_alloca (length*sizeof(int)); [L546] i=0 [L546] COND TRUE i