./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-free.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_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-free.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/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 0aa8863ece82a1c5b6b3bdfef0291d9b5e9dd95e ......................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 12:20:05,511 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:20:05,512 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:20:05,518 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:20:05,518 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:20:05,519 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:20:05,519 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:20:05,520 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:20:05,521 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:20:05,522 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:20:05,522 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:20:05,523 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:20:05,523 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:20:05,524 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:20:05,524 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:20:05,525 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:20:05,525 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:20:05,526 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:20:05,527 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:20:05,528 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:20:05,528 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:20:05,529 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:20:05,530 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:20:05,530 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:20:05,530 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:20:05,531 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:20:05,532 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:20:05,532 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:20:05,532 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:20:05,533 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:20:05,533 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:20:05,534 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:20:05,534 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:20:05,534 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:20:05,535 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:20:05,535 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:20:05,535 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-09 12:20:05,543 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:20:05,543 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:20:05,544 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 12:20:05,544 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 12:20:05,544 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:20:05,544 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:20:05,544 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 12:20:05,544 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 12:20:05,544 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:20:05,545 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:20:05,545 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 12:20:05,545 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 12:20:05,545 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 12:20:05,545 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 12:20:05,545 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:20:05,545 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 12:20:05,545 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-09 12:20:05,546 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-09 12:20:05,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:20:05,546 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 12:20:05,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-09 12:20:05,546 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:20:05,546 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 12:20:05,546 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-09 12:20:05,546 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 12:20:05,547 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_a271408f-5bbc-4702-8578-eee5fae21f4b/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 -> 0aa8863ece82a1c5b6b3bdfef0291d9b5e9dd95e [2018-12-09 12:20:05,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:20:05,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:20:05,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:20:05,574 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:20:05,574 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:20:05,575 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/../../sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-free.i [2018-12-09 12:20:05,610 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/data/f2497fcd8/db5a391809df4a8db760955f543a746a/FLAG91f3540d0 [2018-12-09 12:20:06,066 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:20:06,067 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/sv-benchmarks/c/list-ext-properties/960521-1_1_false-valid-free.i [2018-12-09 12:20:06,073 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/data/f2497fcd8/db5a391809df4a8db760955f543a746a/FLAG91f3540d0 [2018-12-09 12:20:06,081 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/data/f2497fcd8/db5a391809df4a8db760955f543a746a [2018-12-09 12:20:06,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:20:06,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:20:06,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:20:06,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:20:06,086 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:20:06,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ceaa519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06, skipping insertion in model container [2018-12-09 12:20:06,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:20:06,109 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:20:06,245 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:20:06,250 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:20:06,309 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:20:06,328 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:20:06,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06 WrapperNode [2018-12-09 12:20:06,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:20:06,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:20:06,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:20:06,329 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:20:06,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:20:06,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:20:06,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:20:06,354 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:20:06,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:20:06,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:20:06,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:20:06,369 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:20:06,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:20:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/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 12:20:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 12:20:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 12:20:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 12:20:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 12:20:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:20:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:20:06,604 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:20:06,604 INFO L280 CfgBuilder]: Removed 9 assue(true) statements. [2018-12-09 12:20:06,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:20:06 BoogieIcfgContainer [2018-12-09 12:20:06,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:20:06,605 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-09 12:20:06,605 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-09 12:20:06,614 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-09 12:20:06,614 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:20:06" (1/1) ... [2018-12-09 12:20:06,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:20:06,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:06,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 39 states and 43 transitions. [2018-12-09 12:20:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-12-09 12:20:06,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-09 12:20:06,650 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:06,717 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 12:20:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 39 states and 42 transitions. [2018-12-09 12:20:06,721 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-12-09 12:20:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 12:20:06,721 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:06,759 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 12:20:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 38 states and 41 transitions. [2018-12-09 12:20:06,775 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-12-09 12:20:06,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 12:20:06,775 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:06,812 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 12:20:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 37 states and 40 transitions. [2018-12-09 12:20:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-12-09 12:20:06,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 12:20:06,891 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:06,921 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 12:20:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 36 states and 39 transitions. [2018-12-09 12:20:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-12-09 12:20:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 12:20:06,993 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:07,088 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 12:20:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 38 states and 42 transitions. [2018-12-09 12:20:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-12-09 12:20:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 12:20:07,385 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:07,465 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 12:20:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2018-12-09 12:20:08,018 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-12-09 12:20:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 12:20:08,020 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:08,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:20:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 49 states and 60 transitions. [2018-12-09 12:20:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2018-12-09 12:20:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 12:20:08,520 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:20:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:10,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 53 states and 69 transitions. [2018-12-09 12:20:10,846 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2018-12-09 12:20:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 12:20:10,846 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:20:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 55 states and 74 transitions. [2018-12-09 12:20:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2018-12-09 12:20:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 12:20:11,260 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-09 12:20:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:12,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 58 states and 79 transitions. [2018-12-09 12:20:12,011 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2018-12-09 12:20:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 12:20:12,012 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:20:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 62 states and 86 transitions. [2018-12-09 12:20:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 86 transitions. [2018-12-09 12:20:12,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 12:20:12,422 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 12:20:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 63 states and 86 transitions. [2018-12-09 12:20:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2018-12-09 12:20:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 12:20:12,436 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:20:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:12,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 68 states and 95 transitions. [2018-12-09 12:20:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2018-12-09 12:20:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 12:20:12,860 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:20:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 70 states and 97 transitions. [2018-12-09 12:20:12,881 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 97 transitions. [2018-12-09 12:20:12,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 12:20:12,882 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:20:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:20:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:20:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 78 states and 107 transitions. [2018-12-09 12:20:15,681 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 107 transitions. [2018-12-09 12:20:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 12:20:15,682 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:20:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:20:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:20:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:20:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:20:15,740 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2018-12-09 12:20:15,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.12 12:20:15 ImpRootNode [2018-12-09 12:20:15,767 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-09 12:20:15,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 12:20:15,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 12:20:15,768 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 12:20:15,768 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:20:06" (3/4) ... [2018-12-09 12:20:15,770 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 12:20:15,799 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a271408f-5bbc-4702-8578-eee5fae21f4b/bin-2019/ukojak/witness.graphml [2018-12-09 12:20:15,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 12:20:15,800 INFO L168 Benchmark]: Toolchain (without parser) took 9717.07 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 319.8 MB). Free memory was 957.1 MB in the beginning and 858.2 MB in the end (delta: 98.8 MB). Peak memory consumption was 418.6 MB. Max. memory is 11.5 GB. [2018-12-09 12:20:15,801 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:20:15,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-09 12:20:15,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.71 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 12:20:15,801 INFO L168 Benchmark]: Boogie Preprocessor took 15.09 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 12:20:15,802 INFO L168 Benchmark]: RCFGBuilder took 235.94 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: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-12-09 12:20:15,802 INFO L168 Benchmark]: CodeCheck took 9162.31 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 169.3 MB). Free memory was 1.1 GB in the beginning and 858.2 MB in the end (delta: 245.5 MB). Peak memory consumption was 414.8 MB. Max. memory is 11.5 GB. [2018-12-09 12:20:15,802 INFO L168 Benchmark]: Witness Printer took 31.46 ms. Allocated memory is still 1.3 GB. Free memory is still 858.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:20:15,804 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, 45 locations, 17 error locations. UNSAFE Result, 9.1s OverallTime, 16 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 166272 SDtfs, 59916 SDslu, 30880 SDs, 0 SdLazy, 378758 SolverSat, 141646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1220 GetRequests, 1011 SyntacticMatches, 31 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14351 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 5542 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 14/21 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: 643]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L619] int *a, *b; [L620] int n; [L632] n = 1 VAL [a={0:0}, b={0:0}, n=1] [L633] COND FALSE !(__VERIFIER_nondet_int() && n < 30) [L636] a = malloc(n * sizeof(*a)) [L637] b = malloc(n * sizeof(*b)) [L638] EXPR b++ VAL [a={2:0}, b={6:4}, n=1] [L638] *b++ = 0 [L624] int i; [L625] i = 0 VAL [a={2:0}, b={6:4}, n=1] [L625] COND TRUE i < n VAL [a={2:0}, b={6:4}, n=1] [L626] a[i] = -1 [L625] i++ VAL [a={2:0}, b={6:4}, n=1] [L625] COND FALSE !(i < n) [L627] i = 0 VAL [a={2:0}, b={6:4}, n=1] [L627] COND FALSE !(i < n - 1) VAL [a={2:0}, b={6:4}, n=1] [L640] b[-1] VAL [a={2:0}, b={6:4}, n=1] [L640] COND FALSE !(b[-1]) [L643] free(a) VAL [a={2:0}, b={6:4}, n=1] [L643] free(a) [L643] free(b) VAL [a={2:0}, b={6:4}, n=1] * 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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -178.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.71 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. * Boogie Preprocessor took 15.09 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. * RCFGBuilder took 235.94 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: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. * CodeCheck took 9162.31 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 169.3 MB). Free memory was 1.1 GB in the beginning and 858.2 MB in the end (delta: 245.5 MB). Peak memory consumption was 414.8 MB. Max. memory is 11.5 GB. * Witness Printer took 31.46 ms. Allocated memory is still 1.3 GB. Free memory is still 858.2 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...