./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/array_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_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/array_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9c01a6cc6331754f7a6c99ec20becb53bf53c79 ................................................................................................................................................................................................................................................................................................................................................. 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 15:50:59,408 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:50:59,409 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:50:59,417 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:50:59,417 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:50:59,418 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:50:59,419 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:50:59,420 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:50:59,421 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:50:59,421 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:50:59,422 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:50:59,422 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:50:59,423 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:50:59,423 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:50:59,424 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:50:59,424 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:50:59,425 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:50:59,426 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:50:59,427 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:50:59,428 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:50:59,429 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:50:59,429 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:50:59,431 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:50:59,431 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:50:59,431 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:50:59,432 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:50:59,432 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:50:59,433 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:50:59,433 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:50:59,434 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:50:59,434 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:50:59,435 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:50:59,435 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:50:59,435 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:50:59,435 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:50:59,436 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:50:59,436 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 15:50:59,445 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:50:59,446 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:50:59,446 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:50:59,446 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 15:50:59,447 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 15:50:59,447 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 15:50:59,447 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 15:50:59,447 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 15:50:59,447 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 15:50:59,447 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 15:50:59,447 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 15:50:59,447 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 15:50:59,448 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 15:50:59,448 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:50:59,448 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:50:59,448 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:50:59,449 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:50:59,449 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:50:59,449 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:50:59,449 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:50:59,449 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:50:59,449 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:50:59,449 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:50:59,449 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:50:59,450 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:50:59,450 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:50:59,450 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:50:59,450 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:50:59,450 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:50:59,450 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:50:59,450 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:50:59,451 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:50:59,451 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:50:59,451 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 15:50:59,451 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:50:59,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:50:59,451 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 15:50:59,451 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan 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 -> Taipan 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 -> c9c01a6cc6331754f7a6c99ec20becb53bf53c79 [2018-11-18 15:50:59,473 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:50:59,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:50:59,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:50:59,486 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:50:59,486 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:50:59,486 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/../../sv-benchmarks/c/loops/array_false-unreach-call_true-termination.i [2018-11-18 15:50:59,526 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/data/fd183bf29/41dff9601a4248ab990d45c90e2ecb01/FLAG1db6dbcda [2018-11-18 15:50:59,915 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:50:59,915 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/sv-benchmarks/c/loops/array_false-unreach-call_true-termination.i [2018-11-18 15:50:59,919 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/data/fd183bf29/41dff9601a4248ab990d45c90e2ecb01/FLAG1db6dbcda [2018-11-18 15:50:59,927 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/data/fd183bf29/41dff9601a4248ab990d45c90e2ecb01 [2018-11-18 15:50:59,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:50:59,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 15:50:59,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:50:59,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:50:59,933 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:50:59,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:50:59" (1/1) ... [2018-11-18 15:50:59,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411459c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:50:59, skipping insertion in model container [2018-11-18 15:50:59,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:50:59" (1/1) ... [2018-11-18 15:50:59,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:50:59,952 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:51:00,058 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:51:00,060 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:51:00,071 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:51:00,085 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:51:00,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00 WrapperNode [2018-11-18 15:51:00,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:51:00,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 15:51:00,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 15:51:00,086 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 15:51:00,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... [2018-11-18 15:51:00,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... [2018-11-18 15:51:00,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 15:51:00,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:51:00,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:51:00,102 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:51:00,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... [2018-11-18 15:51:00,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... [2018-11-18 15:51:00,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... [2018-11-18 15:51:00,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... [2018-11-18 15:51:00,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... [2018-11-18 15:51:00,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... [2018-11-18 15:51:00,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... [2018-11-18 15:51:00,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:51:00,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:51:00,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:51:00,150 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:51:00,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/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 15:51:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 15:51:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:51:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:51:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 15:51:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:51:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:51:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 15:51:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:51:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:51:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 15:51:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 15:51:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 15:51:00,312 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:51:00,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:51:00 BoogieIcfgContainer [2018-11-18 15:51:00,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:51:00,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:51:00,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:51:00,315 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:51:00,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:50:59" (1/3) ... [2018-11-18 15:51:00,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d4b826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:51:00, skipping insertion in model container [2018-11-18 15:51:00,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:51:00" (2/3) ... [2018-11-18 15:51:00,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18d4b826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:51:00, skipping insertion in model container [2018-11-18 15:51:00,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:51:00" (3/3) ... [2018-11-18 15:51:00,318 INFO L112 eAbstractionObserver]: Analyzing ICFG array_false-unreach-call_true-termination.i [2018-11-18 15:51:00,326 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:51:00,332 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 15:51:00,342 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 15:51:00,360 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:51:00,360 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 15:51:00,360 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:51:00,361 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:51:00,361 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:51:00,361 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:51:00,361 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:51:00,361 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:51:00,371 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-18 15:51:00,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 15:51:00,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:51:00,374 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:51:00,376 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:51:00,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:00,379 INFO L82 PathProgramCache]: Analyzing trace with hash 296275345, now seen corresponding path program 1 times [2018-11-18 15:51:00,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:51:00,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:00,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:00,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:00,418 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:51:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:00,477 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 15:51:00,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:51:00,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:51:00,479 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:51:00,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 15:51:00,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 15:51:00,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 15:51:00,495 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-11-18 15:51:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:51:00,509 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-18 15:51:00,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:51:00,510 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-18 15:51:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:51:00,517 INFO L225 Difference]: With dead ends: 36 [2018-11-18 15:51:00,517 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 15:51:00,520 INFO L604 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 [2018-11-18 15:51:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 15:51:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 15:51:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 15:51:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 15:51:00,546 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2018-11-18 15:51:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:51:00,547 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 15:51:00,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 15:51:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 15:51:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 15:51:00,547 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:51:00,548 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:51:00,548 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:51:00,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:00,548 INFO L82 PathProgramCache]: Analyzing trace with hash 665169549, now seen corresponding path program 1 times [2018-11-18 15:51:00,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:51:00,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:00,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:00,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:00,550 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:51:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:51:00,632 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 15:51:00,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:51:00,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 15:51:00,632 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 15:51:00,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 15:51:00,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:51:00,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:51:00,634 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2018-11-18 15:51:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:51:00,659 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2018-11-18 15:51:00,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:51:00,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 15:51:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:51:00,660 INFO L225 Difference]: With dead ends: 26 [2018-11-18 15:51:00,660 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 15:51:00,661 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 15:51:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 15:51:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-11-18 15:51:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 15:51:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-18 15:51:00,664 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-11-18 15:51:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:51:00,664 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-18 15:51:00,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 15:51:00,664 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-18 15:51:00,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 15:51:00,664 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:51:00,665 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:51:00,665 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 15:51:00,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:51:00,665 INFO L82 PathProgramCache]: Analyzing trace with hash 361632356, now seen corresponding path program 1 times [2018-11-18 15:51:00,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 15:51:00,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:00,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:51:00,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:51:00,666 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 15:51:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:51:00,711 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 15:51:00,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:51:00 BoogieIcfgContainer [2018-11-18 15:51:00,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:51:00,730 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:51:00,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:51:00,730 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:51:00,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:51:00" (3/4) ... [2018-11-18 15:51:00,732 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 15:51:00,762 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_eca2b506-0aa5-4d37-9d86-81b8f88615bd/bin-2019/utaipan/witness.graphml [2018-11-18 15:51:00,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:51:00,763 INFO L168 Benchmark]: Toolchain (without parser) took 833.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -139.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:00,764 INFO L168 Benchmark]: CDTParser took 0.16 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 15:51:00,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:00,765 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.68 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:00,765 INFO L168 Benchmark]: Boogie Preprocessor took 48.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -216.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:00,766 INFO L168 Benchmark]: RCFGBuilder took 162.79 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:00,766 INFO L168 Benchmark]: TraceAbstraction took 416.34 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: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 11.5 GB. [2018-11-18 15:51:00,767 INFO L168 Benchmark]: Witness Printer took 32.65 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 15:51:00,769 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 154.78 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.68 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -216.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 162.79 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: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 416.34 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: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 11.5 GB. * Witness Printer took 32.65 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: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int SIZE=1; [L14] unsigned int j,k; [L15] FCALL int array[SIZE], menor; [L17] menor = __VERIFIER_nondet_int() [L19] j=0 VAL [array={6:0}, j=0, menor=0, SIZE=1] [L19] COND TRUE jmenor) 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, 23 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 3 SDslu, 12 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 529 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...