./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp_false-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer --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 0.1.23-5842f4b [2018-11-18 11:21:59,541 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:21:59,542 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:21:59,549 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:21:59,549 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:21:59,550 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:21:59,550 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:21:59,551 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:21:59,553 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:21:59,553 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:21:59,554 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:21:59,554 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:21:59,555 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:21:59,556 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:21:59,557 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:21:59,557 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:21:59,558 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:21:59,559 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:21:59,560 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:21:59,562 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:21:59,562 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:21:59,563 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:21:59,565 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:21:59,565 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:21:59,565 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:21:59,566 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:21:59,566 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:21:59,567 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:21:59,567 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:21:59,568 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:21:59,568 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:21:59,569 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:21:59,569 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:21:59,569 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:21:59,570 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:21:59,570 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:21:59,571 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 11:21:59,580 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:21:59,580 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:21:59,581 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:21:59,581 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:21:59,581 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:21:59,581 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:21:59,582 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:21:59,582 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:21:59,582 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:21:59,582 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:21:59,582 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:21:59,582 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:21:59,582 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:21:59,583 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:21:59,583 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 11:21:59,583 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:21:59,583 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:21:59,583 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:21:59,583 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:21:59,583 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:21:59,583 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:21:59,584 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:21:59,584 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:21:59,584 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:21:59,584 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:21:59,584 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:21:59,584 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:21:59,584 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:21:59,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:21:59,585 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer 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 [2018-11-18 11:21:59,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:21:59,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:21:59,616 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:21:59,617 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:21:59,617 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:21:59,617 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp_false-no-overflow.c [2018-11-18 11:21:59,652 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/data/c0a9377ca/abb4a6ef400948799bf0958062a34386/FLAG089fe548e [2018-11-18 11:22:00,056 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:22:00,056 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/sv-benchmarks/c/termination-crafted-lit/cstrncmp_false-no-overflow.c [2018-11-18 11:22:00,061 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/data/c0a9377ca/abb4a6ef400948799bf0958062a34386/FLAG089fe548e [2018-11-18 11:22:00,071 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/data/c0a9377ca/abb4a6ef400948799bf0958062a34386 [2018-11-18 11:22:00,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:22:00,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:22:00,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:22:00,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:22:00,080 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:22:00,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:22:00" (1/1) ... [2018-11-18 11:22:00,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263ee91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00, skipping insertion in model container [2018-11-18 11:22:00,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:22:00" (1/1) ... [2018-11-18 11:22:00,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:22:00,108 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:22:00,217 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:22:00,223 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:22:00,235 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:22:00,244 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:22:00,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00 WrapperNode [2018-11-18 11:22:00,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:22:00,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:22:00,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:22:00,245 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:22:00,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00" (1/1) ... [2018-11-18 11:22:00,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00" (1/1) ... [2018-11-18 11:22:00,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00" (1/1) ... [2018-11-18 11:22:00,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00" (1/1) ... [2018-11-18 11:22:00,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00" (1/1) ... [2018-11-18 11:22:00,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00" (1/1) ... [2018-11-18 11:22:00,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00" (1/1) ... [2018-11-18 11:22:00,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:22:00,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:22:00,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:22:00,272 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:22:00,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/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 [2018-11-18 11:22:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:22:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:22:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-11-18 11:22:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-11-18 11:22:00,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:22:00,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:22:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 11:22:00,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:22:00,553 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:22:00,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:22:00 BoogieIcfgContainer [2018-11-18 11:22:00,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:22:00,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:22:00,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:22:00,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:22:00,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:22:00" (1/3) ... [2018-11-18 11:22:00,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585afcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:22:00, skipping insertion in model container [2018-11-18 11:22:00,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:22:00" (2/3) ... [2018-11-18 11:22:00,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585afcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:22:00, skipping insertion in model container [2018-11-18 11:22:00,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:22:00" (3/3) ... [2018-11-18 11:22:00,560 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncmp_false-no-overflow.c [2018-11-18 11:22:00,566 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:22:00,570 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 11:22:00,581 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 11:22:00,602 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:22:00,602 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:22:00,602 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:22:00,602 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:22:00,602 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:22:00,602 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:22:00,602 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:22:00,602 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:22:00,603 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:22:00,615 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-18 11:22:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 11:22:00,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:22:00,618 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:22:00,620 INFO L423 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:22:00,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:22:00,624 INFO L82 PathProgramCache]: Analyzing trace with hash -339476895, now seen corresponding path program 1 times [2018-11-18 11:22:00,625 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:22:00,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:22:00,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:00,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:22:00,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:22:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:22:00,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:22:00,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:22:00,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:22:00,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:22:00,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:22:00,751 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2018-11-18 11:22:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:22:00,806 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-11-18 11:22:00,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:22:00,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 11:22:00,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:22:00,814 INFO L225 Difference]: With dead ends: 61 [2018-11-18 11:22:00,814 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 11:22:00,816 INFO L604 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 [2018-11-18 11:22:00,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 11:22:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-11-18 11:22:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:22:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2018-11-18 11:22:00,844 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 9 [2018-11-18 11:22:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:22:00,845 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-11-18 11:22:00,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:22:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2018-11-18 11:22:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 11:22:00,845 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:22:00,845 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:22:00,846 INFO L423 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:22:00,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:22:00,846 INFO L82 PathProgramCache]: Analyzing trace with hash -339476833, now seen corresponding path program 1 times [2018-11-18 11:22:00,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:22:00,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:22:00,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:00,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:22:00,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:22:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:22:00,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:22:00,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:22:00,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:22:00,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:22:00,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:22:00,881 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 3 states. [2018-11-18 11:22:00,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:22:00,901 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2018-11-18 11:22:00,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:22:00,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 11:22:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:22:00,903 INFO L225 Difference]: With dead ends: 36 [2018-11-18 11:22:00,903 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 11:22:00,903 INFO L604 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 [2018-11-18 11:22:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 11:22:00,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2018-11-18 11:22:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 11:22:00,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-11-18 11:22:00,908 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 9 [2018-11-18 11:22:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:22:00,908 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-11-18 11:22:00,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:22:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2018-11-18 11:22:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:22:00,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:22:00,909 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:22:00,909 INFO L423 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:22:00,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:22:00,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1933849113, now seen corresponding path program 1 times [2018-11-18 11:22:00,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:22:00,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:22:00,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:00,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:22:00,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:22:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:22:00,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:22:00,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:22:00,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:22:00,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:22:00,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:22:00,929 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 3 states. [2018-11-18 11:22:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:22:00,940 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-11-18 11:22:00,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:22:00,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 11:22:00,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:22:00,941 INFO L225 Difference]: With dead ends: 31 [2018-11-18 11:22:00,941 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 11:22:00,941 INFO L604 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 [2018-11-18 11:22:00,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 11:22:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-18 11:22:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 11:22:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-11-18 11:22:00,944 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 10 [2018-11-18 11:22:00,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:22:00,944 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-11-18 11:22:00,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:22:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-11-18 11:22:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 11:22:00,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:22:00,945 INFO L375 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] [2018-11-18 11:22:00,945 INFO L423 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:22:00,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:22:00,945 INFO L82 PathProgramCache]: Analyzing trace with hash -8379660, now seen corresponding path program 1 times [2018-11-18 11:22:00,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:22:00,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:22:00,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:00,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:22:00,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:22:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 11:22:01,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:22:01,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:22:01,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:22:01,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:22:01,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:22:01,027 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2018-11-18 11:22:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:22:01,079 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-11-18 11:22:01,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:22:01,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-11-18 11:22:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:22:01,080 INFO L225 Difference]: With dead ends: 29 [2018-11-18 11:22:01,080 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 11:22:01,080 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:22:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 11:22:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-18 11:22:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 11:22:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-18 11:22:01,085 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 30 [2018-11-18 11:22:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:22:01,085 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-18 11:22:01,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:22:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-18 11:22:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 11:22:01,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:22:01,086 INFO L375 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, 1] [2018-11-18 11:22:01,086 INFO L423 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, build_nondet_StringErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, cstrncmpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:22:01,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:22:01,087 INFO L82 PathProgramCache]: Analyzing trace with hash -259769389, now seen corresponding path program 1 times [2018-11-18 11:22:01,087 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:22:01,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:22:01,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:01,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:22:01,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:22:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:22:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:22:01,136 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 11:22:01,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:22:01 BoogieIcfgContainer [2018-11-18 11:22:01,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:22:01,154 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:22:01,154 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:22:01,154 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:22:01,154 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:22:00" (3/4) ... [2018-11-18 11:22:01,156 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 11:22:01,186 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_60f4d35b-c92e-499e-a0d3-9c7733ac6af1/bin-2019/uautomizer/witness.graphml [2018-11-18 11:22:01,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:22:01,186 INFO L168 Benchmark]: Toolchain (without parser) took 1112.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 958.1 MB in the beginning and 1.1 GB in the end (delta: -122.2 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:22:01,187 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:22:01,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.55 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:22:01,188 INFO L168 Benchmark]: Boogie Preprocessor took 26.53 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:22:01,188 INFO L168 Benchmark]: RCFGBuilder took 281.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -193.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 11:22:01,189 INFO L168 Benchmark]: TraceAbstraction took 598.48 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: 54.8 MB). Peak memory consumption was 54.8 MB. Max. memory is 11.5 GB. [2018-11-18 11:22:01,189 INFO L168 Benchmark]: Witness Printer took 32.01 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:22:01,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.55 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.53 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 281.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -193.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 598.48 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: 54.8 MB). Peak memory consumption was 54.8 MB. Max. memory is 11.5 GB. * Witness Printer took 32.01 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: 3.3 MB). Peak memory consumption was 3.3 MB. 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] EXPR, FCALL malloc(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] FCALL nondetString[length-1] = '\0' [L19] RET return nondetString; VAL [\result={3:0}, length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L47] 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] EXPR, FCALL malloc(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] FCALL nondetString[length-1] = '\0' [L19] RET return nondetString; VAL [\result={4:0}, length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L47] 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, 43 locations, 6 error locations. UNSAFE Result, 0.5s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 125 SDtfs, 41 SDslu, 173 SDs, 0 SdLazy, 44 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1482 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...