./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/nec11_false-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/nec11_false-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/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 377e57d4a3daf9b967866e1410a183dc7f79915c ........................................................................................................................................................................................................................................................................ 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 0.1.23-1dbac8b [2018-11-10 07:38:40,435 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:38:40,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:38:40,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:38:40,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:38:40,445 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:38:40,446 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:38:40,447 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:38:40,448 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:38:40,449 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:38:40,450 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:38:40,450 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:38:40,451 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:38:40,451 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:38:40,452 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:38:40,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:38:40,453 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:38:40,455 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:38:40,457 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:38:40,458 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:38:40,459 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:38:40,460 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:38:40,462 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:38:40,462 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:38:40,463 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:38:40,463 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:38:40,465 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:38:40,465 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:38:40,466 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:38:40,467 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:38:40,467 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:38:40,468 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:38:40,468 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:38:40,469 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:38:40,470 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:38:40,470 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:38:40,471 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 07:38:40,482 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:38:40,483 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:38:40,483 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:38:40,483 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 07:38:40,484 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:38:40,485 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:38:40,485 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:38:40,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:38:40,485 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 07:38:40,485 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:38:40,485 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 07:38:40,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:38:40,486 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:38:40,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:38:40,486 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:38:40,486 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 07:38:40,486 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:38:40,486 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:38:40,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:38:40,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:38:40,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:38:40,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 07:38:40,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 07:38:40,487 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:38:40,487 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:38:40,488 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:38:40,488 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:38:40,488 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:38:40,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 07:38:40,491 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_cd2fbda9-8783-4481-8d56-207391df2b7b/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 -> 377e57d4a3daf9b967866e1410a183dc7f79915c [2018-11-10 07:38:40,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:38:40,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:38:40,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:38:40,531 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:38:40,531 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:38:40,532 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/../../sv-benchmarks/c/loops/nec11_false-unreach-call_false-termination.i [2018-11-10 07:38:40,573 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/data/68fe6a833/572bdf782a7448fa97585de72324691e/FLAG68f987280 [2018-11-10 07:38:40,943 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:38:40,943 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/sv-benchmarks/c/loops/nec11_false-unreach-call_false-termination.i [2018-11-10 07:38:40,950 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/data/68fe6a833/572bdf782a7448fa97585de72324691e/FLAG68f987280 [2018-11-10 07:38:40,964 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/data/68fe6a833/572bdf782a7448fa97585de72324691e [2018-11-10 07:38:40,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:38:40,969 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 07:38:40,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:38:40,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:38:40,974 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:38:40,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:38:40" (1/1) ... [2018-11-10 07:38:40,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18da3d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:40, skipping insertion in model container [2018-11-10 07:38:40,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:38:40" (1/1) ... [2018-11-10 07:38:40,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:38:41,007 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:38:41,136 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:38:41,139 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:38:41,149 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:38:41,160 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:38:41,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41 WrapperNode [2018-11-10 07:38:41,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:38:41,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:38:41,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:38:41,161 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:38:41,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41" (1/1) ... [2018-11-10 07:38:41,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41" (1/1) ... [2018-11-10 07:38:41,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41" (1/1) ... [2018-11-10 07:38:41,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41" (1/1) ... [2018-11-10 07:38:41,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41" (1/1) ... [2018-11-10 07:38:41,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41" (1/1) ... [2018-11-10 07:38:41,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41" (1/1) ... [2018-11-10 07:38:41,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:38:41,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:38:41,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:38:41,183 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:38:41,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/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 [2018-11-10 07:38:41,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 07:38:41,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:38:41,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 07:38:41,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 07:38:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 07:38:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 07:38:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2018-11-10 07:38:41,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 07:38:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 07:38:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:38:41,382 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:38:41,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:38:41 BoogieIcfgContainer [2018-11-10 07:38:41,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:38:41,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 07:38:41,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 07:38:41,386 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 07:38:41,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:38:40" (1/3) ... [2018-11-10 07:38:41,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee5c424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:38:41, skipping insertion in model container [2018-11-10 07:38:41,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:38:41" (2/3) ... [2018-11-10 07:38:41,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee5c424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:38:41, skipping insertion in model container [2018-11-10 07:38:41,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:38:41" (3/3) ... [2018-11-10 07:38:41,389 INFO L112 eAbstractionObserver]: Analyzing ICFG nec11_false-unreach-call_false-termination.i [2018-11-10 07:38:41,396 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 07:38:41,402 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 07:38:41,413 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 07:38:41,436 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:38:41,437 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 07:38:41,437 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 07:38:41,437 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 07:38:41,438 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:38:41,438 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:38:41,438 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 07:38:41,438 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:38:41,438 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 07:38:41,456 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-10 07:38:41,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 07:38:41,460 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:38:41,461 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:38:41,463 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:38:41,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:38:41,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-11-10 07:38:41,471 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:38:41,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:38:41,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:38:41,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:38:41,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:38:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:38:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:38:41,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:38:41,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 07:38:41,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 07:38:41,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 07:38:41,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 07:38:41,582 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-10 07:38:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:38:41,599 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-10 07:38:41,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 07:38:41,600 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-10 07:38:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:38:41,607 INFO L225 Difference]: With dead ends: 33 [2018-11-10 07:38:41,607 INFO L226 Difference]: Without dead ends: 14 [2018-11-10 07:38:41,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 07:38:41,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-10 07:38:41,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-10 07:38:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 07:38:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-11-10 07:38:41,646 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-11-10 07:38:41,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:38:41,647 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-10 07:38:41,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 07:38:41,647 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-11-10 07:38:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 07:38:41,648 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:38:41,648 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:38:41,648 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:38:41,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:38:41,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1715940768, now seen corresponding path program 1 times [2018-11-10 07:38:41,649 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:38:41,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:38:41,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:38:41,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:38:41,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:38:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:38:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:38:41,691 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 07:38:41,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 07:38:41 BoogieIcfgContainer [2018-11-10 07:38:41,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 07:38:41,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:38:41,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:38:41,714 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:38:41,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:38:41" (3/4) ... [2018-11-10 07:38:41,718 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 07:38:41,752 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cd2fbda9-8783-4481-8d56-207391df2b7b/bin-2019/uautomizer/witness.graphml [2018-11-10 07:38:41,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:38:41,753 INFO L168 Benchmark]: Toolchain (without parser) took 785.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:38:41,754 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:38:41,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.17 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:38:41,755 INFO L168 Benchmark]: Boogie Preprocessor took 21.33 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:38:41,756 INFO L168 Benchmark]: RCFGBuilder took 200.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 942.0 MB in the beginning and 1.2 GB in the end (delta: -214.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-10 07:38:41,756 INFO L168 Benchmark]: TraceAbstraction took 330.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-11-10 07:38:41,757 INFO L168 Benchmark]: Witness Printer took 38.46 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-10 07:38:41,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 191.17 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.33 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 200.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 942.0 MB in the beginning and 1.2 GB in the end (delta: -214.4 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 330.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * Witness Printer took 38.46 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: 3.2 MB). Peak memory consumption was 3.2 MB. 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: [L13] int a[5]; [L14] int len=0; [L15] _Bool c=__VERIFIER_nondet_bool(); [L16] int i; VAL [c=0, len=0] [L19] COND FALSE !(\read(c)) VAL [c=0, len=0] [L28] CALL __VERIFIER_assert(len==5) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...