./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 19c675897a6506757b73d61913c0ceb3a779b5c8 ............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:34:31,347 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:31,349 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:31,358 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:31,358 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:31,359 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:31,360 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:31,361 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:31,362 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:31,363 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:31,364 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:31,364 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:31,365 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:31,365 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:31,366 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:31,367 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:31,368 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:31,369 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:31,370 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:31,372 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:31,373 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:31,374 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:31,375 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:31,375 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:31,375 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:31,376 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:31,377 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:31,378 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:31,378 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:31,379 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:31,379 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:31,380 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:31,380 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:31,380 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:31,381 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:31,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:31,381 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 08:34:31,391 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:31,391 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:31,392 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:34:31,392 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 08:34:31,393 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:31,393 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:31,393 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:31,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:31,393 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:34:31,393 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:34:31,394 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:34:31,394 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:31,394 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:34:31,394 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:34:31,394 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:34:31,394 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:34:31,394 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:31,394 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:31,394 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:34:31,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:31,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:31,395 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:34:31,395 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:34:31,395 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:34:31,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:31,395 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:34:31,396 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:34:31,396 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:34:31,396 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:34:31,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:34:31,396 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_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19c675897a6506757b73d61913c0ceb3a779b5c8 [2018-11-18 08:34:31,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:31,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:31,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:31,432 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:31,432 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:31,433 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/../../sv-benchmarks/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-11-18 08:34:31,474 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/data/1e4492d8a/0c53b75d5d75494785e95a966e36ae05/FLAG5ea2ad3a0 [2018-11-18 08:34:31,810 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:31,811 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/sv-benchmarks/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-11-18 08:34:31,816 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/data/1e4492d8a/0c53b75d5d75494785e95a966e36ae05/FLAG5ea2ad3a0 [2018-11-18 08:34:32,234 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/data/1e4492d8a/0c53b75d5d75494785e95a966e36ae05 [2018-11-18 08:34:32,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:32,237 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:34:32,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:32,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:32,240 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:32,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d945ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32, skipping insertion in model container [2018-11-18 08:34:32,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:32,261 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:32,358 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:32,364 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:32,374 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:32,382 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:32,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32 WrapperNode [2018-11-18 08:34:32,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:32,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:32,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:32,383 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:32,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:32,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:32,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:32,408 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:32,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/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 08:34:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:34:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:34:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2018-11-18 08:34:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:34:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:34:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:34:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2018-11-18 08:34:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 08:34:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:34:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:34:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:34:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:34:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 08:34:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 08:34:32,613 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:32,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:32 BoogieIcfgContainer [2018-11-18 08:34:32,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:32,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:34:32,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:34:32,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:34:32,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:32" (1/3) ... [2018-11-18 08:34:32,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db5c6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:32, skipping insertion in model container [2018-11-18 08:34:32,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (2/3) ... [2018-11-18 08:34:32,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db5c6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:32, skipping insertion in model container [2018-11-18 08:34:32,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:32" (3/3) ... [2018-11-18 08:34:32,621 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-11-18 08:34:32,630 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:34:32,637 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:34:32,651 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:34:32,677 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:32,678 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:34:32,678 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:34:32,678 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:34:32,678 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:32,678 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:32,678 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:34:32,679 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:32,679 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:34:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-11-18 08:34:32,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 08:34:32,700 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:32,700 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:32,704 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:32,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:32,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1583108737, now seen corresponding path program 1 times [2018-11-18 08:34:32,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:32,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:32,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:32,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:32,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:32,919 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 08:34:32,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:32,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 08:34:32,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 08:34:32,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 08:34:32,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:34:32,935 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2018-11-18 08:34:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:33,083 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-18 08:34:33,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 08:34:33,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-18 08:34:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:33,091 INFO L225 Difference]: With dead ends: 58 [2018-11-18 08:34:33,092 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 08:34:33,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 08:34:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 08:34:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-11-18 08:34:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 08:34:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-18 08:34:33,125 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 14 [2018-11-18 08:34:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:33,126 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-18 08:34:33,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 08:34:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-18 08:34:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 08:34:33,127 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:33,127 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:33,127 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:33,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:33,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1693639993, now seen corresponding path program 1 times [2018-11-18 08:34:33,128 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:33,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:33,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:33,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:33,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:33,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:34:33,250 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:34:33,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:33,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:33,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:34:33,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2018-11-18 08:34:33,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 08:34:33,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 08:34:33,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2018-11-18 08:34:33,456 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-11-18 08:34:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:33,597 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-18 08:34:33,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 08:34:33,598 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2018-11-18 08:34:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:33,600 INFO L225 Difference]: With dead ends: 37 [2018-11-18 08:34:33,600 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 08:34:33,601 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-11-18 08:34:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 08:34:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 08:34:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 08:34:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-18 08:34:33,605 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2018-11-18 08:34:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:33,606 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-18 08:34:33,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 08:34:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-18 08:34:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 08:34:33,606 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:33,607 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:33,607 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:33,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:33,607 INFO L82 PathProgramCache]: Analyzing trace with hash 563486335, now seen corresponding path program 2 times [2018-11-18 08:34:33,607 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:33,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:33,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:33,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:33,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:33,658 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:34:33,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:34:33 BoogieIcfgContainer [2018-11-18 08:34:33,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:34:33,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:34:33,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:34:33,680 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:34:33,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:32" (3/4) ... [2018-11-18 08:34:33,682 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 08:34:33,724 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_97aeb61c-1ec9-4de0-8777-7d88804dc9d6/bin-2019/uautomizer/witness.graphml [2018-11-18 08:34:33,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:34:33,725 INFO L168 Benchmark]: Toolchain (without parser) took 1488.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 958.1 MB in the beginning and 990.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 100.9 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:33,726 INFO L168 Benchmark]: CDTParser took 0.14 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 08:34:33,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.53 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 08:34:33,727 INFO L168 Benchmark]: Boogie Preprocessor took 24.01 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 08:34:33,728 INFO L168 Benchmark]: RCFGBuilder took 206.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:33,728 INFO L168 Benchmark]: TraceAbstraction took 1065.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.3 MB in the end (delta: 119.8 MB). Peak memory consumption was 119.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:33,728 INFO L168 Benchmark]: Witness Printer took 44.43 ms. Allocated memory is still 1.2 GB. Free memory is still 990.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:33,730 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 145.53 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 24.01 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 206.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -165.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1065.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 990.3 MB in the end (delta: 119.8 MB). Peak memory consumption was 119.8 MB. Max. memory is 11.5 GB. * Witness Printer took 44.43 ms. Allocated memory is still 1.2 GB. Free memory is still 990.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] Char *tmp; VAL [\old(tmp)=11, \old(tmp)=13, tmp={0:0}] [L29] FCALL Char pathbuf[1 +1]; [L31] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L33] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 VAL [\old(tmp)=0, \old(tmp)=0, bound={10:28}, pathbuf={10:0}, tmp={10:4}] [L35] CALL glob2 (pathbuf, bound) VAL [\old(tmp)=0, \old(tmp)=0, pathbuf={10:0}, pathlim={10:28}, tmp={10:4}] [L16] Char *p; [L18] p = pathbuf VAL [\old(tmp)=0, \old(tmp)=0, p={10:0}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={10:0}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={10:4}] [L20] __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={10:0}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L21] FCALL *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={10:0}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={10:4}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={10:4}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={10:4}] [L20] __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={10:4}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L21] FCALL *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={10:4}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={10:8}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={10:8}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={10:4}] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={10:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 57 SDslu, 136 SDs, 0 SdLazy, 153 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 5826 SizeOfPredicates, 8 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...