./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-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_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/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 73643ecf8e1581c13142517bcc63dc5d77c96d29 .................................................................................................................................................................................................................................................................................. 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 [2018-10-26 22:21:10,609 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:21:10,611 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:21:10,624 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:21:10,625 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:21:10,626 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:21:10,629 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:21:10,631 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:21:10,635 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:21:10,637 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:21:10,639 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:21:10,639 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:21:10,640 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:21:10,643 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:21:10,645 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:21:10,653 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:21:10,653 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:21:10,655 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:21:10,657 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:21:10,658 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:21:10,659 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:21:10,660 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:21:10,662 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:21:10,663 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:21:10,663 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:21:10,664 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:21:10,665 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:21:10,666 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:21:10,667 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:21:10,668 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:21:10,668 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:21:10,669 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:21:10,669 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:21:10,669 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:21:10,670 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:21:10,671 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:21:10,671 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 22:21:10,684 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:21:10,685 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:21:10,685 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:21:10,686 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:21:10,686 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:21:10,686 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:21:10,686 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:21:10,686 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:21:10,687 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:21:10,687 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:21:10,687 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:21:10,689 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:21:10,689 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:21:10,689 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:21:10,689 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:21:10,689 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:21:10,690 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:21:10,690 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:21:10,690 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:21:10,690 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:21:10,690 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:21:10,690 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:21:10,691 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:21:10,691 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:21:10,691 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:21:10,691 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:21:10,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:21:10,692 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:21:10,692 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:21:10,692 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:21:10,692 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:21:10,692 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:21:10,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:21:10,693 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:21:10,693 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_3860511e-761f-4323-9a19-3565831ad0e9/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 -> 73643ecf8e1581c13142517bcc63dc5d77c96d29 [2018-10-26 22:21:10,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:21:10,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:21:10,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:21:10,745 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:21:10,745 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:21:10,746 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-10-26 22:21:10,811 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/data/9479dbde9/0e6cb7c1cf0e4bd4894e0d49e9195811/FLAG3d8ea9ca6 [2018-10-26 22:21:11,203 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:21:11,203 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-10-26 22:21:11,210 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/data/9479dbde9/0e6cb7c1cf0e4bd4894e0d49e9195811/FLAG3d8ea9ca6 [2018-10-26 22:21:11,225 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/data/9479dbde9/0e6cb7c1cf0e4bd4894e0d49e9195811 [2018-10-26 22:21:11,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:21:11,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 22:21:11,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:21:11,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:21:11,234 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:21:11,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b07ba67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11, skipping insertion in model container [2018-10-26 22:21:11,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:21:11,267 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:21:11,414 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:21:11,417 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:21:11,431 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:21:11,445 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:21:11,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11 WrapperNode [2018-10-26 22:21:11,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:21:11,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:21:11,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:21:11,447 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:21:11,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:21:11,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:21:11,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:21:11,469 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:21:11,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... [2018-10-26 22:21:11,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:21:11,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:21:11,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:21:11,488 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:21:11,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/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 [2018-10-26 22:21:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:21:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:21:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:21:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:21:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:21:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:21:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 22:21:11,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 22:21:12,054 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:21:12,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:21:12 BoogieIcfgContainer [2018-10-26 22:21:12,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:21:12,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:21:12,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:21:12,072 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:21:12,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:21:11" (1/3) ... [2018-10-26 22:21:12,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304efa34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:21:12, skipping insertion in model container [2018-10-26 22:21:12,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:21:11" (2/3) ... [2018-10-26 22:21:12,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304efa34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:21:12, skipping insertion in model container [2018-10-26 22:21:12,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:21:12" (3/3) ... [2018-10-26 22:21:12,075 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_02_false-unreach-call_true-termination.i [2018-10-26 22:21:12,108 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:21:12,137 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:21:12,169 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:21:12,211 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:21:12,211 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:21:12,212 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:21:12,212 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:21:12,212 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:21:12,212 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:21:12,213 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:21:12,213 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:21:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-26 22:21:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 22:21:12,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:21:12,247 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:21:12,251 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:21:12,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:21:12,260 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-10-26 22:21:12,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:21:12,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:21:12,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:21:12,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:21:12,319 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:21:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:21:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:21:12,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:21:12,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:21:12,402 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:21:12,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:21:12,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:21:12,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:21:12,421 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-10-26 22:21:12,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:21:12,441 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-10-26 22:21:12,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:21:12,443 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-26 22:21:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:21:12,453 INFO L225 Difference]: With dead ends: 32 [2018-10-26 22:21:12,453 INFO L226 Difference]: Without dead ends: 13 [2018-10-26 22:21:12,457 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 [2018-10-26 22:21:12,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-26 22:21:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-26 22:21:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-26 22:21:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-26 22:21:12,489 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-10-26 22:21:12,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:21:12,490 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-26 22:21:12,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:21:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-26 22:21:12,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 22:21:12,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:21:12,491 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:21:12,492 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:21:12,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:21:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash -717461825, now seen corresponding path program 1 times [2018-10-26 22:21:12,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:21:12,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:21:12,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:21:12,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:21:12,494 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:21:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:21:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:21:12,527 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:21:12,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:21:12 BoogieIcfgContainer [2018-10-26 22:21:12,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:21:12,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:21:12,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:21:12,552 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:21:12,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:21:12" (3/4) ... [2018-10-26 22:21:12,555 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 22:21:12,594 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3860511e-761f-4323-9a19-3565831ad0e9/bin-2019/utaipan/witness.graphml [2018-10-26 22:21:12,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:21:12,596 INFO L168 Benchmark]: Toolchain (without parser) took 1367.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -146.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:21:12,598 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:21:12,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.76 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-10-26 22:21:12,599 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.39 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:21:12,599 INFO L168 Benchmark]: Boogie Preprocessor took 19.06 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:21:12,601 INFO L168 Benchmark]: RCFGBuilder took 567.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2018-10-26 22:21:12,602 INFO L168 Benchmark]: TraceAbstraction took 495.02 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-10-26 22:21:12,602 INFO L168 Benchmark]: Witness Printer took 43.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:21:12,606 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 980.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 216.76 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.39 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.06 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 567.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.2 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 495.02 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Witness Printer took 43.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x=__VERIFIER_nondet_int(); [L15] int y=__VERIFIER_nondet_int(); [L16] int z=__VERIFIER_nondet_int(); [L18] COND FALSE !(x<100 && 100