./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ceec10d001c6e3ab8acae30cb42f114023e2890 ............................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:33:48,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:33:48,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:33:48,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:33:48,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:33:48,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:33:48,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:33:48,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:33:48,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:33:48,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:33:48,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:33:48,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:33:48,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:33:48,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:33:48,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:33:48,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:33:48,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:33:48,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:33:48,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:33:48,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:33:48,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:33:48,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:33:48,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:33:48,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:33:48,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:33:48,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:33:48,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:33:48,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:33:48,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:33:48,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:33:48,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:33:48,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:33:48,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:33:48,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:33:48,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:33:48,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:33:48,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:33:48,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:33:48,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:33:48,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:33:48,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:33:48,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-28 04:33:48,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:33:48,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:33:48,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:33:48,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:33:48,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:33:48,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:33:48,603 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:33:48,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:33:48,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:33:48,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:33:48,604 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 04:33:48,604 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 04:33:48,604 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 04:33:48,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:33:48,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:33:48,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:33:48,605 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:33:48,606 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:33:48,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:33:48,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:33:48,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:33:48,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:33:48,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:33:48,607 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:33:48,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:33:48,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ceec10d001c6e3ab8acae30cb42f114023e2890 [2020-11-28 04:33:48,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:33:48,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:33:48,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:33:48,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:33:48,904 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:33:48,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-11-28 04:33:48,998 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/data/959bf1d34/4d64c705e02e4520896042f4cf310f73/FLAG249773076 [2020-11-28 04:33:49,571 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:33:49,572 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-11-28 04:33:49,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/data/959bf1d34/4d64c705e02e4520896042f4cf310f73/FLAG249773076 [2020-11-28 04:33:49,855 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/data/959bf1d34/4d64c705e02e4520896042f4cf310f73 [2020-11-28 04:33:49,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:33:49,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:33:49,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:33:49,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:33:49,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:33:49,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:33:49" (1/1) ... [2020-11-28 04:33:49,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48210dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:49, skipping insertion in model container [2020-11-28 04:33:49,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:33:49" (1/1) ... [2020-11-28 04:33:49,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:33:49,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:33:50,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:33:50,279 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:33:50,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:33:50,387 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:33:50,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50 WrapperNode [2020-11-28 04:33:50,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:33:50,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:33:50,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:33:50,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:33:50,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... [2020-11-28 04:33:50,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... [2020-11-28 04:33:50,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:33:50,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:33:50,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:33:50,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:33:50,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... [2020-11-28 04:33:50,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... [2020-11-28 04:33:50,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... [2020-11-28 04:33:50,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... [2020-11-28 04:33:50,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... [2020-11-28 04:33:50,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... [2020-11-28 04:33:50,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... [2020-11-28 04:33:50,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:33:50,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:33:50,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:33:50,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:33:50,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:33:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:33:50,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:33:50,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:33:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:33:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:33:50,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:33:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:33:51,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:33:51,477 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 04:33:51,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:33:51 BoogieIcfgContainer [2020-11-28 04:33:51,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:33:51,481 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:33:51,481 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:33:51,489 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:33:51,489 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:33:51" (1/1) ... [2020-11-28 04:33:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:33:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2020-11-28 04:33:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-28 04:33:51,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:33:51,558 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:33:51,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 04:33:51,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 04:33:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:33:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:33:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 16 states and 17 transitions. [2020-11-28 04:33:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-28 04:33:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:33:51,872 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:33:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:33:51,919 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:33:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:33:51,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:33:51,964 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2020-11-28 04:33:51,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:33:51 ImpRootNode [2020-11-28 04:33:51,997 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:33:51,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:33:51,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:33:51,998 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:33:51,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:33:51" (3/4) ... [2020-11-28 04:33:52,010 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:33:52,047 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1f342087-39e9-4cb2-ba34-039d45e9bd07/bin/ukojak/witness.graphml [2020-11-28 04:33:52,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:33:52,049 INFO L168 Benchmark]: Toolchain (without parser) took 2188.27 ms. Allocated memory is still 104.9 MB. Free memory was 68.9 MB in the beginning and 62.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 3.9 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:52,049 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 77.8 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:33:52,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.40 ms. Allocated memory is still 104.9 MB. Free memory was 68.7 MB in the beginning and 70.6 MB in the end (delta: -1.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:52,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.87 ms. Allocated memory is still 104.9 MB. Free memory was 70.6 MB in the beginning and 68.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:52,052 INFO L168 Benchmark]: Boogie Preprocessor took 49.70 ms. Allocated memory is still 104.9 MB. Free memory was 68.9 MB in the beginning and 67.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:33:52,052 INFO L168 Benchmark]: RCFGBuilder took 968.59 ms. Allocated memory is still 104.9 MB. Free memory was 67.6 MB in the beginning and 40.4 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:52,053 INFO L168 Benchmark]: CodeCheck took 516.39 ms. Allocated memory is still 104.9 MB. Free memory was 40.4 MB in the beginning and 64.3 MB in the end (delta: -23.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:33:52,054 INFO L168 Benchmark]: Witness Printer took 49.36 ms. Allocated memory is still 104.9 MB. Free memory was 64.3 MB in the beginning and 62.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:33:52,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 16 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 4 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 7 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND FALSE !(length < 1 || length >= 2147483647 / sizeof(int)) [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); [L520] COND FALSE !(!arr || !arr2) [L521] i=0 [L521] COND TRUE i