./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/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 0.1.24-678e011 [2019-11-19 23:42:34,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:42:34,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:42:34,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:42:34,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:42:34,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:42:34,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:42:34,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:42:34,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:42:34,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:42:34,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:42:34,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:42:34,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:42:34,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:42:34,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:42:34,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:42:34,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:42:34,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:42:34,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:42:34,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:42:34,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:42:34,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:42:34,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:42:34,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:42:34,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:42:34,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:42:34,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:42:34,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:42:34,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:42:34,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:42:34,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:42:34,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:42:34,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:42:34,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:42:34,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:42:34,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:42:34,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:42:34,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:42:34,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:42:34,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:42:34,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:42:34,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2019-11-19 23:42:34,146 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:42:34,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:42:34,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-19 23:42:34,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-19 23:42:34,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:42:34,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:42:34,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:42:34,149 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:42:34,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:42:34,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:42:34,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 23:42:34,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 23:42:34,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 23:42:34,150 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-19 23:42:34,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:42:34,151 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:42:34,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 23:42:34,151 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-19 23:42:34,151 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-19 23:42:34,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:42:34,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 23:42:34,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-19 23:42:34,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:42:34,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 23:42:34,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 23:42:34,153 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-19 23:42:34,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 23:42:34,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 23:42:34,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/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 [2019-11-19 23:42:34,361 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:42:34,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:42:34,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:42:34,389 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:42:34,389 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:42:34,391 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-19 23:42:34,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/data/375dc38c1/435503a8bb06461ebff32e627f0cbb35/FLAG2e5be1ebd [2019-11-19 23:42:34,893 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:42:34,894 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2019-11-19 23:42:34,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/data/375dc38c1/435503a8bb06461ebff32e627f0cbb35/FLAG2e5be1ebd [2019-11-19 23:42:35,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/data/375dc38c1/435503a8bb06461ebff32e627f0cbb35 [2019-11-19 23:42:35,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:42:35,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:42:35,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:42:35,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:42:35,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:42:35,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671a59c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35, skipping insertion in model container [2019-11-19 23:42:35,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,365 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:42:35,392 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:42:35,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:42:35,738 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:42:35,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:42:35,795 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:42:35,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35 WrapperNode [2019-11-19 23:42:35,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:42:35,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:42:35,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:42:35,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:42:35,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:42:35,846 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:42:35,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:42:35,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:42:35,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... [2019-11-19 23:42:35,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:42:35,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:42:35,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:42:35,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:42:35,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:42:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/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 [2019-11-19 23:42:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 23:42:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2019-11-19 23:42:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2019-11-19 23:42:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 23:42:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:42:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:42:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 23:42:36,492 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:42:36,492 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 23:42:36,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:42:36 BoogieIcfgContainer [2019-11-19 23:42:36,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:42:36,495 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-19 23:42:36,495 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-19 23:42:36,507 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-19 23:42:36,507 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:42:36" (1/1) ... [2019-11-19 23:42:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:42:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 23:42:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 25 states and 29 transitions. [2019-11-19 23:42:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-11-19 23:42:36,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-19 23:42:36,567 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 23:42:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:42:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:42:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 23:42:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2019-11-19 23:42:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-19 23:42:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-19 23:42:36,780 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 23:42:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:42:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:42:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 23:42:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2019-11-19 23:42:36,906 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-19 23:42:36,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-19 23:42:36,907 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 23:42:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:42:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:42:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 23:42:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 22 states and 26 transitions. [2019-11-19 23:42:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-19 23:42:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 23:42:36,993 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 23:42:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:42:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:42:37,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 23:42:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 21 states and 25 transitions. [2019-11-19 23:42:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-19 23:42:37,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 23:42:37,204 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 23:42:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:42:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-19 23:42:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 23:42:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2019-11-19 23:42:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-19 23:42:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-19 23:42:37,429 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 23:42:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:42:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:42:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:42:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:42:37,720 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2019-11-19 23:42:37,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 11:42:37 ImpRootNode [2019-11-19 23:42:37,784 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-19 23:42:37,784 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:42:37,785 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:42:37,785 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:42:37,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:42:36" (3/4) ... [2019-11-19 23:42:37,789 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 23:42:37,885 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eb70c28c-0352-497d-ae0f-e5b5f257d0f3/bin/ukojak/witness.graphml [2019-11-19 23:42:37,889 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:42:37,892 INFO L168 Benchmark]: Toolchain (without parser) took 2544.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -97.4 MB). Peak memory consumption was 60.9 MB. Max. memory is 11.5 GB. [2019-11-19 23:42:37,893 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:42:37,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 447.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -204.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:42:37,894 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:42:37,895 INFO L168 Benchmark]: Boogie Preprocessor took 31.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:42:37,896 INFO L168 Benchmark]: RCFGBuilder took 615.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:42:37,896 INFO L168 Benchmark]: CodeCheck took 1289.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.2 MB). Peak memory consumption was 65.2 MB. Max. memory is 11.5 GB. [2019-11-19 23:42:37,897 INFO L168 Benchmark]: Witness Printer took 105.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-19 23:42:37,900 INFO L335 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. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 88 SDslu, 4 SDs, 0 SdLazy, 318 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=8457] [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=8457, malloc(length * sizeof(char))={5905:0}, nondetString={5905:0}] [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=2241] [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=2241, 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 0.83 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 447.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -204.4 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.70 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 615.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 35.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 11.5 GB. * CodeCheck took 1289.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.2 MB). Peak memory consumption was 65.2 MB. Max. memory is 11.5 GB. * Witness Printer took 105.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...