./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 .......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:31:42,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:31:42,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:31:42,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:31:42,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:31:42,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:31:42,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:31:42,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:31:42,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:31:42,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:31:42,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:31:42,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:31:42,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:31:42,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:31:42,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:31:42,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:31:42,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:31:42,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:31:42,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:31:42,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:31:42,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:31:42,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:31:42,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:31:42,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:31:42,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:31:42,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:31:42,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:31:42,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:31:42,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:31:42,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:31:42,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:31:42,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:31:42,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:31:42,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:31:42,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:31:42,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:31:42,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:31:42,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:31:42,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:31:42,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:31:42,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:31:42,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2020-11-30 00:31:43,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:31:43,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:31:43,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 00:31:43,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-30 00:31:43,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:31:43,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:31:43,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:31:43,020 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:31:43,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:31:43,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:31:43,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:31:43,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:31:43,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:31:43,023 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 00:31:43,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:31:43,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:31:43,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:31:43,024 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-30 00:31:43,024 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-30 00:31:43,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:31:43,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:31:43,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-30 00:31:43,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:31:43,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:31:43,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:31:43,026 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-30 00:31:43,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:31:43,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:31:43,026 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_4eea5393-ab61-418f-99dd-24ad8a001ddb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 [2020-11-30 00:31:43,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:31:43,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:31:43,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:31:43,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:31:43,319 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:31:43,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2020-11-30 00:31:43,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/data/c3e89f11f/590e6e54e961499ebbc995de5dbf5c8d/FLAG9a80a3477 [2020-11-30 00:31:43,915 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:31:43,916 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2020-11-30 00:31:43,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/data/c3e89f11f/590e6e54e961499ebbc995de5dbf5c8d/FLAG9a80a3477 [2020-11-30 00:31:44,261 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/data/c3e89f11f/590e6e54e961499ebbc995de5dbf5c8d [2020-11-30 00:31:44,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:31:44,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:31:44,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:31:44,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:31:44,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:31:44,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767ffb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44, skipping insertion in model container [2020-11-30 00:31:44,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:31:44,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:31:44,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:31:44,487 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:31:44,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:31:44,526 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:31:44,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44 WrapperNode [2020-11-30 00:31:44,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:31:44,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:31:44,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:31:44,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:31:44,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:31:44,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:31:44,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:31:44,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:31:44,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... [2020-11-30 00:31:44,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:31:44,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:31:44,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:31:44,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:31:44,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/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 00:31:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:31:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2020-11-30 00:31:44,670 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2020-11-30 00:31:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:31:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:31:44,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:31:44,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:31:45,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:31:45,174 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-30 00:31:45,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:45 BoogieIcfgContainer [2020-11-30 00:31:45,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:31:45,178 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-30 00:31:45,178 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-30 00:31:45,188 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-30 00:31:45,189 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:45" (1/1) ... [2020-11-30 00:31:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:45,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:31:45,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 25 states and 29 transitions. [2020-11-30 00:31:45,252 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-11-30 00:31:45,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 00:31:45,254 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:31:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:45,424 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 00:31:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:31:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2020-11-30 00:31:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-30 00:31:45,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 00:31:45,460 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:31:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:45,512 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 00:31:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:31:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2020-11-30 00:31:45,581 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-30 00:31:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:31:45,581 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:31:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:45,627 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 00:31:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:31:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 26 transitions. [2020-11-30 00:31:45,679 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-30 00:31:45,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:31:45,682 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:31:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:45,743 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 00:31:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:31:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2020-11-30 00:31:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-11-30 00:31:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:31:45,858 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:31:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 00:31:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:31:46,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2020-11-30 00:31:46,017 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-30 00:31:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:31:46,018 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:31:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:46,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:46,249 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2020-11-30 00:31:46,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 30.11 12:31:46 ImpRootNode [2020-11-30 00:31:46,287 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-30 00:31:46,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:31:46,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:31:46,288 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:31:46,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:45" (3/4) ... [2020-11-30 00:31:46,291 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:31:46,335 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4eea5393-ab61-418f-99dd-24ad8a001ddb/bin/ukojak/witness.graphml [2020-11-30 00:31:46,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:31:46,337 INFO L168 Benchmark]: Toolchain (without parser) took 2070.87 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 68.6 MB in the beginning and 76.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:46,338 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:46,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.33 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 73.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:46,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.81 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:46,340 INFO L168 Benchmark]: Boogie Preprocessor took 22.56 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:46,341 INFO L168 Benchmark]: RCFGBuilder took 574.67 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 47.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:46,342 INFO L168 Benchmark]: CodeCheck took 1109.84 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 47.8 MB in the beginning and 78.8 MB in the end (delta: -31.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:46,342 INFO L168 Benchmark]: Witness Printer took 47.20 ms. Allocated memory is still 123.7 MB. Free memory was 78.8 MB in the beginning and 76.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:46,347 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 2 procedures, 25 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 88 SDslu, 4 SDs, 0 SdLazy, 318 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 624 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L47] CALL build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND FALSE !(length < 1) VAL [length=9726] [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=9726, malloc(length * sizeof(char))={32279:0}, nondetString={32279:0}] [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L47] RET build_nondet_String() [L47] CALL build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND FALSE !(length < 1) VAL [length=10567] [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=10567, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L47] RET build_nondet_String() [L28] unsigned char uc1, uc2; [L30] COND FALSE !(n == 0) [L33] n-- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 54.2 MB in the beginning and 54.1 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.33 ms. Allocated memory is still 96.5 MB. Free memory was 68.3 MB in the beginning and 73.7 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.81 ms. Allocated memory is still 96.5 MB. Free memory was 73.7 MB in the beginning and 72.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.56 ms. Allocated memory is still 96.5 MB. Free memory was 72.0 MB in the beginning and 70.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 574.67 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 47.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * CodeCheck took 1109.84 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 47.8 MB in the beginning and 78.8 MB in the end (delta: -31.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 47.20 ms. Allocated memory is still 123.7 MB. Free memory was 78.8 MB in the beginning and 76.7 MB in the end (delta: 2.1 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...