./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 ......................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:37:38,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:37:38,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:37:38,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:37:38,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:37:38,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:37:38,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:37:38,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:37:38,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:37:38,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:37:38,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:37:38,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:37:38,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:37:38,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:37:38,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:37:38,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:37:38,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:37:38,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:37:38,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:37:38,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:37:38,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:37:38,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:37:38,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:37:38,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:37:38,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:37:38,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:37:38,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:37:38,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:37:38,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:37:38,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:37:38,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:37:38,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:37:38,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:37:38,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:37:38,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:37:38,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:37:38,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:37:38,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:37:38,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:37:38,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:37:38,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:37:38,467 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-28 04:37:38,490 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:37:38,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:37:38,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:37:38,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:37:38,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:37:38,493 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:37:38,493 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:37:38,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:37:38,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:37:38,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:37:38,494 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 04:37:38,494 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 04:37:38,495 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 04:37:38,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:37:38,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:37:38,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:37:38,496 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:37:38,496 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:37:38,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:37:38,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:37:38,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:37:38,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:37:38,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:37:38,497 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:37:38,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:37:38,498 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_72a90e04-5d3a-49b4-a54b-3e4601b4542d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 [2020-11-28 04:37:38,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:37:38,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:37:38,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:37:38,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:37:38,782 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:37:38,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2020-11-28 04:37:38,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/data/758f90625/d7b4268b3c854819bec8bb07e7082067/FLAG997d9ce69 [2020-11-28 04:37:39,410 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:37:39,410 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2020-11-28 04:37:39,425 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/data/758f90625/d7b4268b3c854819bec8bb07e7082067/FLAG997d9ce69 [2020-11-28 04:37:39,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/data/758f90625/d7b4268b3c854819bec8bb07e7082067 [2020-11-28 04:37:39,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:37:39,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:37:39,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:37:39,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:37:39,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:37:39,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:37:39" (1/1) ... [2020-11-28 04:37:39,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e37ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:39, skipping insertion in model container [2020-11-28 04:37:39,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:37:39" (1/1) ... [2020-11-28 04:37:39,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:37:39,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:37:40,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:37:40,232 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:37:40,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:37:40,362 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:37:40,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40 WrapperNode [2020-11-28 04:37:40,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:37:40,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:37:40,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:37:40,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:37:40,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... [2020-11-28 04:37:40,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... [2020-11-28 04:37:40,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:37:40,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:37:40,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:37:40,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:37:40,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... [2020-11-28 04:37:40,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... [2020-11-28 04:37:40,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... [2020-11-28 04:37:40,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... [2020-11-28 04:37:40,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... [2020-11-28 04:37:40,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... [2020-11-28 04:37:40,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... [2020-11-28 04:37:40,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:37:40,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:37:40,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:37:40,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:37:40,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:37:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/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 04:37:40,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:37:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:37:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:37:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:37:40,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:37:40,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:37:41,244 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:37:41,245 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 04:37:41,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:41 BoogieIcfgContainer [2020-11-28 04:37:41,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:37:41,248 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:37:41,248 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:37:41,261 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:37:41,262 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:41" (1/1) ... [2020-11-28 04:37:41,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:37:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:41,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2020-11-28 04:37:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-11-28 04:37:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:37:41,315 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:41,484 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 04:37:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2020-11-28 04:37:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-11-28 04:37:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:37:41,543 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:41,695 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 04:37:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2020-11-28 04:37:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-11-28 04:37:42,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:37:42,051 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:42,095 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 04:37:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:42,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 47 states and 56 transitions. [2020-11-28 04:37:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-11-28 04:37:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:37:42,125 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:42,252 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 04:37:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 47 states and 55 transitions. [2020-11-28 04:37:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-11-28 04:37:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 04:37:42,467 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:37:43,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 50 states and 61 transitions. [2020-11-28 04:37:43,225 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-11-28 04:37:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:37:43,228 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:37:43,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 51 states and 64 transitions. [2020-11-28 04:37:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2020-11-28 04:37:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:37:43,998 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:37:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 52 states and 65 transitions. [2020-11-28 04:37:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-11-28 04:37:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:37:44,036 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:37:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 54 states and 69 transitions. [2020-11-28 04:37:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-11-28 04:37:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:37:44,746 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:37:45,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 50 states and 59 transitions. [2020-11-28 04:37:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-11-28 04:37:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:37:45,337 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:37:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 49 states and 58 transitions. [2020-11-28 04:37:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-11-28 04:37:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:37:45,389 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 04:37:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 51 states and 61 transitions. [2020-11-28 04:37:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-11-28 04:37:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:37:45,651 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:37:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 50 states and 60 transitions. [2020-11-28 04:37:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-11-28 04:37:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:37:45,717 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:37:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 04:37:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:37:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 51 states and 61 transitions. [2020-11-28 04:37:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-11-28 04:37:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:37:45,826 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:37:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:37:45,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:37:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:37:45,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:37:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:37:45,947 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:37:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:37:45,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:37:46,004 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2020-11-28 04:37:46,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:37:46 ImpRootNode [2020-11-28 04:37:46,061 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:37:46,061 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:37:46,061 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:37:46,062 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:37:46,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:37:41" (3/4) ... [2020-11-28 04:37:46,064 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:37:46,135 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_72a90e04-5d3a-49b4-a54b-3e4601b4542d/bin/ukojak/witness.graphml [2020-11-28 04:37:46,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:37:46,138 INFO L168 Benchmark]: Toolchain (without parser) took 6388.76 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 59.7 MB in the beginning and 100.6 MB in the end (delta: -40.9 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:46,139 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 75.5 MB. Free memory was 46.5 MB in the beginning and 46.5 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:37:46,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.77 ms. Allocated memory is still 92.3 MB. Free memory was 59.7 MB in the beginning and 58.8 MB in the end (delta: 906.3 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:46,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.82 ms. Allocated memory is still 92.3 MB. Free memory was 58.8 MB in the beginning and 56.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:46,141 INFO L168 Benchmark]: Boogie Preprocessor took 29.92 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 55.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:37:46,142 INFO L168 Benchmark]: RCFGBuilder took 803.35 ms. Allocated memory is still 92.3 MB. Free memory was 55.4 MB in the beginning and 50.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:46,143 INFO L168 Benchmark]: CodeCheck took 4812.78 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 50.3 MB in the beginning and 102.6 MB in the end (delta: -52.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:37:46,144 INFO L168 Benchmark]: Witness Printer took 74.01 ms. Allocated memory is still 134.2 MB. Free memory was 102.6 MB in the beginning and 100.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:37:46,149 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, 44 locations, 23 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 14, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24656 SDtfs, 26604 SDslu, 18624 SDs, 0 SdLazy, 105066 SolverSat, 38898 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 613 GetRequests, 522 SyntacticMatches, 19 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 2596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 6/15 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 529]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 [L518] COND FALSE !(length % 2 == 0) [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() [L521] i++ [L521] COND FALSE !(i < length) [L526] i=0 [L526] COND TRUE i