./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted-lit/cstrncmp_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/termination-crafted-lit/cstrncmp_false-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --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 0.1.24-91b1670 [2018-11-28 23:07:38,176 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:07:38,177 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:07:38,189 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:07:38,189 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:07:38,190 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:07:38,192 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:07:38,194 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:07:38,195 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:07:38,196 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:07:38,197 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:07:38,197 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:07:38,198 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:07:38,199 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:07:38,200 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:07:38,201 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:07:38,202 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:07:38,204 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:07:38,206 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:07:38,207 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:07:38,208 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:07:38,210 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:07:38,212 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:07:38,212 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:07:38,213 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:07:38,213 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:07:38,214 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:07:38,215 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:07:38,216 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:07:38,217 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:07:38,217 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:07:38,218 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:07:38,218 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:07:38,218 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:07:38,219 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:07:38,220 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:07:38,220 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 23:07:38,245 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:07:38,246 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:07:38,247 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:07:38,247 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:07:38,248 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:07:38,248 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:07:38,248 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:07:38,248 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:07:38,250 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:07:38,250 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:07:38,251 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:07:38,251 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:07:38,251 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:07:38,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:07:38,252 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:07:38,252 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:07:38,252 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:07:38,252 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:07:38,252 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:07:38,253 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:07:38,253 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:07:38,253 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:07:38,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:07:38,253 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:07:38,253 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:07:38,256 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:07:38,257 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:07:38,257 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:07:38,257 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:07:38,257 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer 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 [2018-11-28 23:07:38,304 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:07:38,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:07:38,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:07:38,323 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:07:38,323 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:07:38,324 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/cstrncmp_false-no-overflow.c [2018-11-28 23:07:38,389 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07adede31/78978e2b70044428876e39c967c9e6e0/FLAG9f7c4836a [2018-11-28 23:07:38,853 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:07:38,853 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/cstrncmp_false-no-overflow.c [2018-11-28 23:07:38,860 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07adede31/78978e2b70044428876e39c967c9e6e0/FLAG9f7c4836a [2018-11-28 23:07:39,229 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07adede31/78978e2b70044428876e39c967c9e6e0 [2018-11-28 23:07:39,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:07:39,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:07:39,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:07:39,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:07:39,243 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:07:39,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a8dc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39, skipping insertion in model container [2018-11-28 23:07:39,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:07:39,283 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:07:39,501 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:07:39,522 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:07:39,554 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:07:39,577 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:07:39,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39 WrapperNode [2018-11-28 23:07:39,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:07:39,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:07:39,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:07:39,579 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:07:39,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:07:39,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:07:39,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:07:39,605 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:07:39,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... [2018-11-28 23:07:39,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:07:39,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:07:39,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:07:39,634 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:07:39,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2018-11-28 23:07:39,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 23:07:39,751 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-11-28 23:07:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-11-28 23:07:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:07:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:07:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 23:07:39,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:07:39,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:07:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 23:07:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:07:39,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:07:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-11-28 23:07:39,753 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-11-28 23:07:40,250 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:07:40,250 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 23:07:40,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:07:40 BoogieIcfgContainer [2018-11-28 23:07:40,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:07:40,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:07:40,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:07:40,255 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:07:40,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:07:39" (1/3) ... [2018-11-28 23:07:40,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105d6c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:07:40, skipping insertion in model container [2018-11-28 23:07:40,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:39" (2/3) ... [2018-11-28 23:07:40,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105d6c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:07:40, skipping insertion in model container [2018-11-28 23:07:40,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:07:40" (3/3) ... [2018-11-28 23:07:40,259 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncmp_false-no-overflow.c [2018-11-28 23:07:40,269 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:07:40,278 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-28 23:07:40,294 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-28 23:07:40,326 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:07:40,327 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:07:40,327 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:07:40,327 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:07:40,327 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:07:40,327 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:07:40,328 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:07:40,328 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:07:40,328 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:07:40,349 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-28 23:07:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 23:07:40,355 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:40,357 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:40,359 INFO L423 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:40,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:40,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1438395105, now seen corresponding path program 1 times [2018-11-28 23:07:40,368 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:40,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:40,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:40,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:40,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:07:40,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:07:40,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:07:40,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:07:40,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:07:40,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:07:40,558 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2018-11-28 23:07:40,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:40,672 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-11-28 23:07:40,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:07:40,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 23:07:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:40,685 INFO L225 Difference]: With dead ends: 60 [2018-11-28 23:07:40,686 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 23:07:40,689 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:07:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 23:07:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-11-28 23:07:40,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 23:07:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2018-11-28 23:07:40,734 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 9 [2018-11-28 23:07:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:40,734 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2018-11-28 23:07:40,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:07:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2018-11-28 23:07:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 23:07:40,735 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:40,735 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:40,736 INFO L423 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:40,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:40,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1438395167, now seen corresponding path program 1 times [2018-11-28 23:07:40,736 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:40,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:40,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:40,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:40,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:07:40,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:07:40,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:07:40,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:07:40,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:07:40,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:07:40,803 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 3 states. [2018-11-28 23:07:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:40,880 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-11-28 23:07:40,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:07:40,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 23:07:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:40,882 INFO L225 Difference]: With dead ends: 35 [2018-11-28 23:07:40,882 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 23:07:40,883 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:07:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 23:07:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2018-11-28 23:07:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 23:07:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2018-11-28 23:07:40,889 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 9 [2018-11-28 23:07:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:40,890 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2018-11-28 23:07:40,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:07:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2018-11-28 23:07:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 23:07:40,890 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:40,891 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:40,891 INFO L423 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:40,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:40,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1640575335, now seen corresponding path program 1 times [2018-11-28 23:07:40,892 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:40,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:40,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:40,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:40,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:07:40,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:07:40,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:07:40,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:07:40,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:07:40,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:07:40,967 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 3 states. [2018-11-28 23:07:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:41,003 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2018-11-28 23:07:41,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:07:41,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 23:07:41,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:41,005 INFO L225 Difference]: With dead ends: 30 [2018-11-28 23:07:41,005 INFO L226 Difference]: Without dead ends: 28 [2018-11-28 23:07:41,006 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:07:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-28 23:07:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-28 23:07:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 23:07:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-28 23:07:41,015 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2018-11-28 23:07:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:41,016 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-28 23:07:41,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:07:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-28 23:07:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 23:07:41,019 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:41,020 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:41,020 INFO L423 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:41,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:41,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1712546513, now seen corresponding path program 1 times [2018-11-28 23:07:41,021 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:41,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:41,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:41,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:41,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-28 23:07:41,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:07:41,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 23:07:41,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 23:07:41,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 23:07:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:07:41,319 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2018-11-28 23:07:41,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:41,443 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2018-11-28 23:07:41,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:07:41,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-11-28 23:07:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:41,447 INFO L225 Difference]: With dead ends: 28 [2018-11-28 23:07:41,447 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 23:07:41,447 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:07:41,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 23:07:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-28 23:07:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 23:07:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-11-28 23:07:41,454 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 29 [2018-11-28 23:07:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:41,454 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-11-28 23:07:41,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 23:07:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-11-28 23:07:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 23:07:41,455 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:41,456 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:41,456 INFO L423 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:41,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:41,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1549334281, now seen corresponding path program 1 times [2018-11-28 23:07:41,457 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:41,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:41,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:41,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:41,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:07:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:07:41,539 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 23:07:41,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:07:41 BoogieIcfgContainer [2018-11-28 23:07:41,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:07:41,579 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:07:41,579 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:07:41,580 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:07:41,580 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:07:40" (3/4) ... [2018-11-28 23:07:41,583 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 23:07:41,656 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:07:41,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:07:41,657 INFO L168 Benchmark]: Toolchain (without parser) took 2421.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -110.4 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2018-11-28 23:07:41,659 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:07:41,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.84 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:07:41,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.61 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:07:41,661 INFO L168 Benchmark]: Boogie Preprocessor took 29.21 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:07:41,662 INFO L168 Benchmark]: RCFGBuilder took 616.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -179.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:07:41,662 INFO L168 Benchmark]: TraceAbstraction took 1327.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 11.5 GB. [2018-11-28 23:07:41,663 INFO L168 Benchmark]: Witness Printer took 77.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:07:41,667 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 339.84 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.61 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.21 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 616.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -179.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1327.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 11.5 GB. * Witness Printer took 77.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L47] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 VAL [length=1] [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; VAL [\result={3:0}, length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L47] RET, EXPR build_nondet_String() VAL [build_nondet_String()={3:0}] [L47] CALL, EXPR build_nondet_String() [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 VAL [length=1] [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; VAL [\result={4:0}, length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L47] RET, EXPR build_nondet_String() VAL [build_nondet_String()={4:0}, build_nondet_String()={3:0}] [L47] CALL cstrncmp(build_nondet_String(),build_nondet_String(),__VERIFIER_nondet_int()) VAL [\old(n)=-2147483648, s1={3:0}, s2={4:0}] [L28] unsigned char uc1, uc2; VAL [\old(n)=-2147483648, n=-2147483648, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] [L30] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] [L33] n-- VAL [\old(n)=-2147483648, n=-2147483648, n--=-2147483648, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 6 error locations. UNSAFE Result, 1.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 121 SDtfs, 40 SDslu, 168 SDs, 0 SdLazy, 44 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1357 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...