./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 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/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 0.2.0-69874e2 [2020-12-03 11:03:01,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 11:03:01,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 11:03:01,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 11:03:01,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 11:03:01,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 11:03:01,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 11:03:01,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 11:03:01,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 11:03:01,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 11:03:01,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 11:03:01,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 11:03:01,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 11:03:01,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 11:03:01,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 11:03:01,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 11:03:01,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 11:03:01,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 11:03:01,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 11:03:01,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 11:03:01,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 11:03:01,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 11:03:01,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 11:03:01,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 11:03:01,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 11:03:01,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 11:03:01,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 11:03:01,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 11:03:01,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 11:03:01,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 11:03:01,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 11:03:01,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 11:03:01,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 11:03:01,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 11:03:01,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 11:03:01,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 11:03:01,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 11:03:01,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 11:03:01,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 11:03:01,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 11:03:01,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 11:03:01,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-12-03 11:03:01,763 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 11:03:01,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 11:03:01,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 11:03:01,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 11:03:01,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 11:03:01,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 11:03:01,767 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 11:03:01,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 11:03:01,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 11:03:01,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 11:03:01,769 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-03 11:03:01,769 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-03 11:03:01,769 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-03 11:03:01,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 11:03:01,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 11:03:01,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 11:03:01,770 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-03 11:03:01,770 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-03 11:03:01,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 11:03:01,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-03 11:03:01,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-03 11:03:01,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 11:03:01,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 11:03:01,772 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-03 11:03:01,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 11:03:01,772 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_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ceec10d001c6e3ab8acae30cb42f114023e2890 [2020-12-03 11:03:02,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 11:03:02,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 11:03:02,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 11:03:02,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 11:03:02,121 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 11:03:02,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/../../sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-12-03 11:03:02,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/data/75ed74de7/7745a33274f74cac8da93d47055325b5/FLAGee16045a0 [2020-12-03 11:03:02,877 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 11:03:02,878 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2020-12-03 11:03:02,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/data/75ed74de7/7745a33274f74cac8da93d47055325b5/FLAGee16045a0 [2020-12-03 11:03:03,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/data/75ed74de7/7745a33274f74cac8da93d47055325b5 [2020-12-03 11:03:03,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 11:03:03,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 11:03:03,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 11:03:03,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 11:03:03,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 11:03:03,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f7a9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03, skipping insertion in model container [2020-12-03 11:03:03,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 11:03:03,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 11:03:03,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 11:03:03,564 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 11:03:03,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 11:03:03,654 INFO L208 MainTranslator]: Completed translation [2020-12-03 11:03:03,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03 WrapperNode [2020-12-03 11:03:03,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 11:03:03,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 11:03:03,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 11:03:03,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 11:03:03,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 11:03:03,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 11:03:03,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 11:03:03,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 11:03:03,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... [2020-12-03 11:03:03,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 11:03:03,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 11:03:03,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 11:03:03,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 11:03:03,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 11:03:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/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 [2020-12-03 11:03:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-03 11:03:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-03 11:03:03,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 11:03:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-03 11:03:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 11:03:03,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 11:03:04,553 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 11:03:04,553 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-03 11:03:04,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 11:03:04 BoogieIcfgContainer [2020-12-03 11:03:04,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 11:03:04,557 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-03 11:03:04,557 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-03 11:03:04,568 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-03 11:03:04,568 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 11:03:04" (1/1) ... [2020-12-03 11:03:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 11:03:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:03:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2020-12-03 11:03:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-03 11:03:04,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-03 11:03:04,619 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:03:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 11:03:04,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-03 11:03:04,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 11:03:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 11:03:14,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-03 11:03:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 16 states and 17 transitions. [2020-12-03 11:03:14,940 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-03 11:03:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 11:03:14,941 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-03 11:03:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 11:03:14,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 11:03:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 11:03:14,981 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 11:03:15,013 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2020-12-03 11:03:15,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 11:03:15 ImpRootNode [2020-12-03 11:03:15,045 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-03 11:03:15,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 11:03:15,051 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 11:03:15,052 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 11:03:15,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 11:03:04" (3/4) ... [2020-12-03 11:03:15,055 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 11:03:15,090 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3e9cbb0d-a0bb-458c-a08a-b3f40c87408f/bin/ukojak/witness.graphml [2020-12-03 11:03:15,090 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 11:03:15,092 INFO L168 Benchmark]: Toolchain (without parser) took 11950.72 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 71.2 MB in the beginning and 62.8 MB in the end (delta: 8.4 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2020-12-03 11:03:15,094 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 11:03:15,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.93 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 65.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-03 11:03:15,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.72 ms. Allocated memory is still 98.6 MB. Free memory was 65.2 MB in the beginning and 63.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 11:03:15,097 INFO L168 Benchmark]: Boogie Preprocessor took 27.12 ms. Allocated memory is still 98.6 MB. Free memory was 63.4 MB in the beginning and 62.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 11:03:15,099 INFO L168 Benchmark]: RCFGBuilder took 828.03 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 62.1 MB in the beginning and 85.4 MB in the end (delta: -23.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2020-12-03 11:03:15,100 INFO L168 Benchmark]: CodeCheck took 10488.54 ms. Allocated memory is still 119.5 MB. Free memory was 85.4 MB in the beginning and 64.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-03 11:03:15,100 INFO L168 Benchmark]: Witness Printer took 39.43 ms. Allocated memory is still 119.5 MB. Free memory was 64.8 MB in the beginning and 62.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 11:03:15,104 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: 10.4s, 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, 3 SolverSat, 2 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 10.0s 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, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 3 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 FALSE !(fac < 1 || fac >= 2147483647 / (sizeof(int) * length)) [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