./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_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/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 [2020-11-29 19:19:51,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:19:51,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:19:51,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:19:51,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:19:51,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:19:51,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:19:51,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:19:51,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:19:51,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:19:51,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:19:51,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:19:51,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:19:51,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:19:51,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:19:51,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:19:51,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:19:51,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:19:51,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:19:52,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:19:52,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:19:52,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:19:52,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:19:52,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:19:52,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:19:52,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:19:52,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:19:52,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:19:52,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:19:52,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:19:52,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:19:52,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:19:52,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:19:52,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:19:52,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:19:52,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:19:52,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:19:52,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:19:52,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:19:52,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:19:52,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:19:52,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-29 19:19:52,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:19:52,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:19:52,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:19:52,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:19:52,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:19:52,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:19:52,115 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:19:52,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:19:52,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:19:52,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:19:52,117 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 19:19:52,117 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 19:19:52,118 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 19:19:52,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:19:52,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:19:52,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:19:52,122 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 19:19:52,123 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 19:19:52,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:19:52,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:19:52,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 19:19:52,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:19:52,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:19:52,125 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 19:19:52,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:19:52,125 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_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 [2020-11-29 19:19:52,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:19:52,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:19:52,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:19:52,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:19:52,594 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:19:52,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2020-11-29 19:19:52,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/data/b702ea763/4a6a0f98f36f4f13b4e5e864ef852f63/FLAGb27443f03 [2020-11-29 19:19:53,554 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:19:53,555 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2020-11-29 19:19:53,572 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/data/b702ea763/4a6a0f98f36f4f13b4e5e864ef852f63/FLAGb27443f03 [2020-11-29 19:19:53,791 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/data/b702ea763/4a6a0f98f36f4f13b4e5e864ef852f63 [2020-11-29 19:19:53,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:19:53,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:19:53,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:19:53,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:19:53,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:19:53,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:19:53" (1/1) ... [2020-11-29 19:19:53,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3feff18f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:53, skipping insertion in model container [2020-11-29 19:19:53,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:19:53" (1/1) ... [2020-11-29 19:19:53,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:19:53,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:19:54,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:19:54,496 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:19:54,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:19:54,634 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:19:54,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54 WrapperNode [2020-11-29 19:19:54,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:19:54,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:19:54,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:19:54,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:19:54,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... [2020-11-29 19:19:54,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... [2020-11-29 19:19:54,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:19:54,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:19:54,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:19:54,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:19:54,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... [2020-11-29 19:19:54,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... [2020-11-29 19:19:54,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... [2020-11-29 19:19:54,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... [2020-11-29 19:19:54,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... [2020-11-29 19:19:54,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... [2020-11-29 19:19:54,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... [2020-11-29 19:19:54,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:19:54,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:19:54,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:19:54,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:19:54,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:19:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/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 [2020-11-29 19:19:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:19:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:19:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:19:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:19:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:19:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:19:55,889 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:19:55,890 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-29 19:19:55,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:19:55 BoogieIcfgContainer [2020-11-29 19:19:55,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:19:55,893 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 19:19:55,894 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 19:19:55,906 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 19:19:55,906 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:19:55" (1/1) ... [2020-11-29 19:19:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:19:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:19:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2020-11-29 19:19:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-11-29 19:19:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 19:19:55,968 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:19:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:56,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:19:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2020-11-29 19:19:56,280 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-11-29 19:19:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 19:19:56,281 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:19:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:56,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:19:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2020-11-29 19:19:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-11-29 19:19:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 19:19:56,855 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:19:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:56,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:56,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:19:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 47 states and 56 transitions. [2020-11-29 19:19:56,942 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-11-29 19:19:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 19:19:56,943 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:19:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:19:57,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 47 states and 55 transitions. [2020-11-29 19:19:57,325 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-11-29 19:19:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 19:19:57,325 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:19:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:19:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 50 states and 61 transitions. [2020-11-29 19:19:58,233 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-11-29 19:19:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:19:58,236 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:19:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:59,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:19:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 51 states and 64 transitions. [2020-11-29 19:19:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2020-11-29 19:19:59,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:19:59,220 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:19:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:19:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:19:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 52 states and 65 transitions. [2020-11-29 19:19:59,306 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-11-29 19:19:59,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:19:59,307 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:19:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:19:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:20:00,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:20:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 54 states and 69 transitions. [2020-11-29 19:20:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-11-29 19:20:00,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 19:20:00,164 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:20:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:20:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:20:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 50 states and 59 transitions. [2020-11-29 19:20:00,850 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-11-29 19:20:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:20:00,851 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:20:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:20:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:20:00,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 49 states and 58 transitions. [2020-11-29 19:20:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-11-29 19:20:00,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:20:00,899 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:20:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:20:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:20:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 51 states and 61 transitions. [2020-11-29 19:20:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-11-29 19:20:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:20:01,224 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:20:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:20:01,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:20:01,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 50 states and 60 transitions. [2020-11-29 19:20:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-11-29 19:20:01,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:20:01,295 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:20:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:20:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:20:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 51 states and 61 transitions. [2020-11-29 19:20:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-11-29 19:20:01,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:20:01,446 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:20:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 19:20:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 19:20:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 46 states and 54 transitions. [2020-11-29 19:20:01,517 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-11-29 19:20:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:20:01,518 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 19:20:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:01,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:01,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:01,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:01,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:01,728 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 15 iterations. [2020-11-29 19:20:01,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 07:20:01 ImpRootNode [2020-11-29 19:20:01,758 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 19:20:01,759 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:20:01,759 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:20:01,759 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:20:01,760 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:19:55" (3/4) ... [2020-11-29 19:20:01,763 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:20:01,815 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f8bc2a6a-83e2-4f2c-a6d9-56382af44ad8/bin/ukojak/witness.graphml [2020-11-29 19:20:01,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:20:01,818 INFO L168 Benchmark]: Toolchain (without parser) took 8019.99 ms. Allocated memory was 111.1 MB in the beginning and 169.9 MB in the end (delta: 58.7 MB). Free memory was 82.5 MB in the beginning and 123.1 MB in the end (delta: -40.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:01,819 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 111.1 MB. Free memory is still 67.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:20:01,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 837.42 ms. Allocated memory is still 111.1 MB. Free memory was 82.5 MB in the beginning and 76.3 MB in the end (delta: 6.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:01,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.40 ms. Allocated memory is still 111.1 MB. Free memory was 76.3 MB in the beginning and 74.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:01,822 INFO L168 Benchmark]: Boogie Preprocessor took 71.37 ms. Allocated memory is still 111.1 MB. Free memory was 74.5 MB in the beginning and 73.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:01,823 INFO L168 Benchmark]: RCFGBuilder took 1088.57 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 72.9 MB in the beginning and 104.7 MB in the end (delta: -31.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:01,824 INFO L168 Benchmark]: CodeCheck took 5865.00 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 104.7 MB in the beginning and 125.2 MB in the end (delta: -20.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:01,825 INFO L168 Benchmark]: Witness Printer took 56.14 ms. Allocated memory is still 169.9 MB. Free memory was 125.2 MB in the beginning and 123.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:01,832 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: 5.7s, OverallIterations: 15, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49312 SDtfs, 53226 SDslu, 37256 SDs, 0 SdLazy, 210142 SolverSat, 77796 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 696 GetRequests, 605 SyntacticMatches, 19 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2263 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 2929 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 8/17 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