./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_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_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/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 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 ............................................................................................................................................................................................................................ 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 04:42:55,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:42:55,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:42:55,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:42:55,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:42:55,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:42:55,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:42:55,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:42:55,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:42:55,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:42:55,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:42:55,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:42:55,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:42:55,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:42:55,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:42:55,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:42:55,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:42:55,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:42:55,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:42:55,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:42:55,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:42:55,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:42:55,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:42:55,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:42:55,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:42:55,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:42:55,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:42:55,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:42:55,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:42:55,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:42:55,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:42:55,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:42:55,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:42:55,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:42:55,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:42:55,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:42:55,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:42:55,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:42:55,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:42:55,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:42:55,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:42:55,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-28 04:42:55,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:42:55,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:42:55,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:42:55,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:42:55,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:42:55,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:42:55,743 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:42:55,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:42:55,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:42:55,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:42:55,745 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 04:42:55,745 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 04:42:55,745 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 04:42:55,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:42:55,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:42:55,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:42:55,746 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:42:55,746 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:42:55,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:42:55,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:42:55,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:42:55,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:42:55,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:42:55,747 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:42:55,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:42:55,747 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_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 [2020-11-28 04:42:55,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:42:56,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:42:56,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:42:56,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:42:56,023 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:42:56,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2020-11-28 04:42:56,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/data/f04f2e270/b560df80d2984926a247949246c4710d/FLAGc8dd84ed6 [2020-11-28 04:42:56,584 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:42:56,586 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2020-11-28 04:42:56,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/data/f04f2e270/b560df80d2984926a247949246c4710d/FLAGc8dd84ed6 [2020-11-28 04:42:56,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/data/f04f2e270/b560df80d2984926a247949246c4710d [2020-11-28 04:42:56,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:42:56,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:42:56,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:42:56,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:42:56,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:42:56,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:56" (1/1) ... [2020-11-28 04:42:56,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28568ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:56, skipping insertion in model container [2020-11-28 04:42:56,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:56" (1/1) ... [2020-11-28 04:42:56,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:42:57,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:42:57,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:42:57,397 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:42:57,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:42:57,526 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:42:57,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57 WrapperNode [2020-11-28 04:42:57,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:42:57,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:42:57,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:42:57,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:42:57,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... [2020-11-28 04:42:57,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... [2020-11-28 04:42:57,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:42:57,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:42:57,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:42:57,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:42:57,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... [2020-11-28 04:42:57,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... [2020-11-28 04:42:57,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... [2020-11-28 04:42:57,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... [2020-11-28 04:42:57,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... [2020-11-28 04:42:57,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... [2020-11-28 04:42:57,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... [2020-11-28 04:42:57,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:42:57,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:42:57,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:42:57,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:42:57,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/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 04:42:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:42:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:42:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:42:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:42:57,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:42:57,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:42:58,412 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:42:58,412 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 04:42:58,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:58 BoogieIcfgContainer [2020-11-28 04:42:58,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:42:58,415 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:42:58,415 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:42:58,426 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:42:58,427 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:58" (1/1) ... [2020-11-28 04:42:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:42:58,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2020-11-28 04:42:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-11-28 04:42:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:42:58,477 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:58,628 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 04:42:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2020-11-28 04:42:58,661 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-11-28 04:42:58,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:42:58,661 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:42:58,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:42:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:42:58,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:42:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:42:58,814 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:42:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:42:58,830 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:42:58,860 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2020-11-28 04:42:58,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:42:58 ImpRootNode [2020-11-28 04:42:58,886 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:42:58,887 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:42:58,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:42:58,888 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:42:58,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:58" (3/4) ... [2020-11-28 04:42:58,891 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:42:58,944 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cc41ca07-2fe1-4e0c-9dbf-b3c8f3a5da5e/bin/ukojak/witness.graphml [2020-11-28 04:42:58,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:42:58,947 INFO L168 Benchmark]: Toolchain (without parser) took 2022.17 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 51.4 MB in the beginning and 71.1 MB in the end (delta: -19.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:42:58,953 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:42:58,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.50 ms. Allocated memory is still 83.9 MB. Free memory was 51.2 MB in the beginning and 50.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:58,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.11 ms. Allocated memory is still 83.9 MB. Free memory was 50.1 MB in the beginning and 48.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:58,955 INFO L168 Benchmark]: Boogie Preprocessor took 37.44 ms. Allocated memory is still 83.9 MB. Free memory was 48.2 MB in the beginning and 46.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:58,956 INFO L168 Benchmark]: RCFGBuilder took 794.27 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.9 MB in the beginning and 60.0 MB in the end (delta: -13.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:58,959 INFO L168 Benchmark]: CodeCheck took 470.95 ms. Allocated memory is still 100.7 MB. Free memory was 60.0 MB in the beginning and 72.4 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:42:58,960 INFO L168 Benchmark]: Witness Printer took 57.18 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 71.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:58,967 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 2 SDs, 0 SdLazy, 6 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 19 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, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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: [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); [L520] int i = 0; [L520] COND TRUE i < length [L522] arr[i] = __VERIFIER_nondet_int() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 41.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 603.50 ms. Allocated memory is still 83.9 MB. Free memory was 51.2 MB in the beginning and 50.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.11 ms. Allocated memory is still 83.9 MB. Free memory was 50.1 MB in the beginning and 48.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.44 ms. Allocated memory is still 83.9 MB. Free memory was 48.2 MB in the beginning and 46.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 794.27 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.9 MB in the beginning and 60.0 MB in the end (delta: -13.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * CodeCheck took 470.95 ms. Allocated memory is still 100.7 MB. Free memory was 60.0 MB in the beginning and 72.4 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.18 ms. Allocated memory is still 100.7 MB. Free memory was 72.4 MB in the beginning and 71.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...