./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/nsqm-iff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqm-iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e11665f1fb34385e5a13a8ae204131e2123894d ............................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:35:08,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:35:08,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:35:08,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:35:08,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:35:08,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:35:08,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:35:08,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:35:08,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:35:08,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:35:08,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:35:08,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:35:08,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:35:08,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:35:08,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:35:08,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:35:08,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:35:08,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:35:08,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:35:08,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:35:08,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:35:08,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:35:08,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:35:08,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:35:08,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:35:08,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:35:08,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:35:08,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:35:08,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:35:08,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:35:08,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:35:08,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:35:08,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:35:08,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:35:08,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:35:08,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:35:08,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:35:08,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:35:08,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:35:08,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:35:08,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:35:08,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-30 00:35:09,018 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:35:09,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:35:09,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 00:35:09,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-30 00:35:09,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:35:09,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:35:09,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:35:09,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:35:09,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:35:09,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:35:09,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:35:09,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:35:09,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:35:09,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:35:09,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:35:09,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:35:09,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:35:09,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:35:09,026 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-30 00:35:09,026 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-30 00:35:09,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:35:09,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:35:09,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-30 00:35:09,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:35:09,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:35:09,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:35:09,029 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-30 00:35:09,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:35:09,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:35:09,030 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_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e11665f1fb34385e5a13a8ae204131e2123894d [2020-11-30 00:35:09,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:35:09,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:35:09,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:35:09,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:35:09,392 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:35:09,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/../../sv-benchmarks/c/array-fpi/nsqm-iff.c [2020-11-30 00:35:09,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/data/3ab600cc0/c57a401c2f8c40f48f01afad86b5de0a/FLAG487c993b0 [2020-11-30 00:35:09,903 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:35:09,903 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/sv-benchmarks/c/array-fpi/nsqm-iff.c [2020-11-30 00:35:09,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/data/3ab600cc0/c57a401c2f8c40f48f01afad86b5de0a/FLAG487c993b0 [2020-11-30 00:35:10,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/data/3ab600cc0/c57a401c2f8c40f48f01afad86b5de0a [2020-11-30 00:35:10,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:35:10,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:35:10,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:10,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:35:10,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:35:10,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d38b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10, skipping insertion in model container [2020-11-30 00:35:10,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:35:10,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:35:10,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:10,516 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:35:10,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:10,550 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:35:10,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10 WrapperNode [2020-11-30 00:35:10,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:10,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:10,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:35:10,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:35:10,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:10,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:35:10,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:35:10,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:35:10,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... [2020-11-30 00:35:10,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:35:10,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:35:10,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:35:10,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:35:10,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/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 [2020-11-30 00:35:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:35:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:35:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:35:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:35:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:35:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:35:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:35:11,334 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:35:11,334 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 00:35:11,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:11 BoogieIcfgContainer [2020-11-30 00:35:11,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:35:11,338 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-30 00:35:11,338 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-30 00:35:11,347 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-30 00:35:11,347 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:11" (1/1) ... [2020-11-30 00:35:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:35:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 11 states and 15 transitions. [2020-11-30 00:35:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2020-11-30 00:35:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:35:11,396 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:35:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:11,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:35:11,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:11,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:35:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 12 states and 16 transitions. [2020-11-30 00:35:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2020-11-30 00:35:11,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:35:11,834 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:35:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:11,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:35:11,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:35:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:35:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 13 states and 18 transitions. [2020-11-30 00:35:12,016 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2020-11-30 00:35:12,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:35:12,016 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:35:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:12,094 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:35:12,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:35:12,206 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2020-11-30 00:35:12,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 30.11 12:35:12 ImpRootNode [2020-11-30 00:35:12,237 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-30 00:35:12,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:35:12,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:35:12,238 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:35:12,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:11" (3/4) ... [2020-11-30 00:35:12,241 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:35:12,296 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e8b2940e-a5dc-4d1e-b13e-14c2c05c2f47/bin/ukojak/witness.graphml [2020-11-30 00:35:12,296 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:35:12,298 INFO L168 Benchmark]: Toolchain (without parser) took 1987.30 ms. Allocated memory is still 125.8 MB. Free memory was 93.0 MB in the beginning and 94.8 MB in the end (delta: -1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:12,299 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 35.9 MB in the beginning and 35.9 MB in the end (delta: 36.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:12,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.94 ms. Allocated memory is still 125.8 MB. Free memory was 93.0 MB in the beginning and 101.2 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:12,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.10 ms. Allocated memory is still 125.8 MB. Free memory was 101.2 MB in the beginning and 99.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:12,301 INFO L168 Benchmark]: Boogie Preprocessor took 57.00 ms. Allocated memory is still 125.8 MB. Free memory was 99.7 MB in the beginning and 98.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:12,302 INFO L168 Benchmark]: RCFGBuilder took 682.54 ms. Allocated memory is still 125.8 MB. Free memory was 98.4 MB in the beginning and 72.5 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:12,303 INFO L168 Benchmark]: CodeCheck took 899.40 ms. Allocated memory is still 125.8 MB. Free memory was 71.8 MB in the beginning and 96.9 MB in the end (delta: -25.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:35:12,304 INFO L168 Benchmark]: Witness Printer took 58.74 ms. Allocated memory is still 125.8 MB. Free memory was 96.9 MB in the beginning and 94.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:35:12,308 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, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 4 SDslu, 0 SDs, 0 SdLazy, 32 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 2 NumberOfNonLiveVariables, 162 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [N=1] [L31] COND TRUE i