./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-acceleration/multivar_false-unreach-call1_true-termination.i --full-output --rcfgbuilder.size.of.a.code.block LoopFreeBlock --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-acceleration/multivar_false-unreach-call1_true-termination.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --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 41f14415ec241c52b66ac43e6b6d8700e45c40dd --rcfgbuilder.size.of.a.code.block LoopFreeBlock ............................................................................................................................................................................................................................................................................ 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 0.1.23-0210da8 [2018-10-22 10:09:34,845 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 10:09:34,847 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 10:09:34,860 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 10:09:34,860 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 10:09:34,861 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 10:09:34,863 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 10:09:34,865 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 10:09:34,867 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 10:09:34,867 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 10:09:34,869 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 10:09:34,869 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 10:09:34,870 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 10:09:34,871 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 10:09:34,873 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 10:09:34,874 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 10:09:34,875 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 10:09:34,877 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 10:09:34,879 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 10:09:34,881 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 10:09:34,882 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 10:09:34,884 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 10:09:34,887 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 10:09:34,888 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 10:09:34,888 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 10:09:34,889 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 10:09:34,890 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 10:09:34,891 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 10:09:34,892 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 10:09:34,893 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 10:09:34,894 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 10:09:34,895 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 10:09:34,895 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 10:09:34,895 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 10:09:34,896 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 10:09:34,898 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 10:09:34,898 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 10:09:34,914 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 10:09:34,914 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 10:09:34,915 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 10:09:34,915 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 10:09:34,915 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 10:09:34,916 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 10:09:34,916 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 10:09:34,916 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 10:09:34,916 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 10:09:34,916 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 10:09:34,916 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 10:09:34,918 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 10:09:34,919 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 10:09:34,919 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 10:09:34,919 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 10:09:34,919 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 10:09:34,919 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 10:09:34,920 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 10:09:34,920 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 10:09:34,920 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 10:09:34,920 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 10:09:34,920 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 10:09:34,920 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 10:09:34,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 10:09:34,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 10:09:34,921 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 10:09:34,921 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 10:09:34,921 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 10:09:34,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 10:09:34,924 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 10:09:34,924 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 10:09:34,924 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 10:09:34,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 10:09:34,925 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 10:09:34,925 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 -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux 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 -> 41f14415ec241c52b66ac43e6b6d8700e45c40dd Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock [2018-10-22 10:09:34,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 10:09:34,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 10:09:34,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 10:09:34,997 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 10:09:34,997 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 10:09:34,998 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_false-unreach-call1_true-termination.i [2018-10-22 10:09:35,059 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4824c5ade/98e3e6729ff942dbbbf642ffac2ef459/FLAG4fd385b8a [2018-10-22 10:09:35,447 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 10:09:35,448 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/multivar_false-unreach-call1_true-termination.i [2018-10-22 10:09:35,455 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4824c5ade/98e3e6729ff942dbbbf642ffac2ef459/FLAG4fd385b8a [2018-10-22 10:09:35,471 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4824c5ade/98e3e6729ff942dbbbf642ffac2ef459 [2018-10-22 10:09:35,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 10:09:35,477 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 10:09:35,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 10:09:35,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 10:09:35,484 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 10:09:35,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6515ce94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35, skipping insertion in model container [2018-10-22 10:09:35,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 10:09:35,530 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 10:09:35,749 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:09:35,754 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 10:09:35,772 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 10:09:35,789 INFO L193 MainTranslator]: Completed translation [2018-10-22 10:09:35,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35 WrapperNode [2018-10-22 10:09:35,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 10:09:35,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 10:09:35,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 10:09:35,791 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 10:09:35,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 10:09:35,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 10:09:35,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 10:09:35,813 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 10:09:35,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... [2018-10-22 10:09:35,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 10:09:35,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 10:09:35,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 10:09:35,840 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 10:09:35,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-22 10:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 10:09:35,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 10:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 10:09:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 10:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 10:09:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 10:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 10:09:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 10:09:36,195 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 10:09:36,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:09:36 BoogieIcfgContainer [2018-10-22 10:09:36,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 10:09:36,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 10:09:36,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 10:09:36,200 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 10:09:36,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 10:09:35" (1/3) ... [2018-10-22 10:09:36,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a94bb90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:09:36, skipping insertion in model container [2018-10-22 10:09:36,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:09:35" (2/3) ... [2018-10-22 10:09:36,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a94bb90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:09:36, skipping insertion in model container [2018-10-22 10:09:36,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:09:36" (3/3) ... [2018-10-22 10:09:36,204 INFO L112 eAbstractionObserver]: Analyzing ICFG multivar_false-unreach-call1_true-termination.i [2018-10-22 10:09:36,214 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 10:09:36,221 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 10:09:36,236 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 10:09:36,278 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 10:09:36,279 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 10:09:36,279 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 10:09:36,279 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 10:09:36,279 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 10:09:36,280 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 10:09:36,280 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 10:09:36,280 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 10:09:36,280 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 10:09:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-10-22 10:09:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-22 10:09:36,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:09:36,308 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:09:36,310 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:09:36,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:09:36,316 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-10-22 10:09:36,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:09:36,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:09:36,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:09:36,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:09:36,367 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:09:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 10:09:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 10:09:36,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 10:09:36,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 10:09:36,429 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 10:09:36,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 10:09:36,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 10:09:36,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 10:09:36,453 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-10-22 10:09:36,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 10:09:36,494 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-10-22 10:09:36,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 10:09:36,495 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-10-22 10:09:36,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 10:09:36,503 INFO L225 Difference]: With dead ends: 29 [2018-10-22 10:09:36,503 INFO L226 Difference]: Without dead ends: 12 [2018-10-22 10:09:36,507 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 [2018-10-22 10:09:36,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-22 10:09:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-22 10:09:36,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-22 10:09:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-22 10:09:36,544 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-22 10:09:36,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 10:09:36,544 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-22 10:09:36,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 10:09:36,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-22 10:09:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 10:09:36,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 10:09:36,546 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 10:09:36,546 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 10:09:36,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 10:09:36,547 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-10-22 10:09:36,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 10:09:36,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:09:36,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 10:09:36,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 10:09:36,550 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 10:09:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 10:09:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 10:09:36,601 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-22 10:09:36,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 10:09:36 BoogieIcfgContainer [2018-10-22 10:09:36,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 10:09:36,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 10:09:36,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 10:09:36,631 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 10:09:36,631 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:09:36" (3/4) ... [2018-10-22 10:09:36,635 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-22 10:09:36,694 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 10:09:36,694 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 10:09:36,695 INFO L168 Benchmark]: Toolchain (without parser) took 1219.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -119.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2018-10-22 10:09:36,697 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:09:36,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.14 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 10:09:36,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.28 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:09:36,699 INFO L168 Benchmark]: Boogie Preprocessor took 26.44 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 10:09:36,700 INFO L168 Benchmark]: RCFGBuilder took 356.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-10-22 10:09:36,701 INFO L168 Benchmark]: TraceAbstraction took 433.16 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-10-22 10:09:36,702 INFO L168 Benchmark]: Witness Printer took 64.26 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-10-22 10:09:36,707 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.14 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 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 22.28 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.44 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 356.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -159.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 433.16 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * Witness Printer took 64.26 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: 6.9 MB). Peak memory consumption was 6.9 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: [L10] unsigned int x = __VERIFIER_nondet_uint(); [L11] unsigned int y = x + 1; VAL [x=1024, y=1025] [L12] COND FALSE !(x < 1024) VAL [x=1024, y=1025] [L16] CALL __VERIFIER_assert(x == y) 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, 18 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 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=18occurred 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...