./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f2964994cdaa1e60b18f6e8e9960cc97625ea606 ............................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-11 21:02:18,796 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-11 21:02:18,798 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-11 21:02:18,810 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-11 21:02:18,810 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-11 21:02:18,811 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-11 21:02:18,813 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-11 21:02:18,815 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-11 21:02:18,817 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-11 21:02:18,817 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-11 21:02:18,818 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-11 21:02:18,819 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-11 21:02:18,820 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-11 21:02:18,821 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-11 21:02:18,823 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-11 21:02:18,823 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-11 21:02:18,824 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-11 21:02:18,827 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-11 21:02:18,829 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-11 21:02:18,831 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-11 21:02:18,833 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-11 21:02:18,834 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-11 21:02:18,838 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-11 21:02:18,838 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-11 21:02:18,838 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-11 21:02:18,839 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-11 21:02:18,841 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-11 21:02:18,841 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-11 21:02:18,842 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-11 21:02:18,844 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-11 21:02:18,844 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-11 21:02:18,845 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-11 21:02:18,845 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-11 21:02:18,845 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-11 21:02:18,846 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-11 21:02:18,848 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-11 21:02:18,848 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-11 21:02:18,863 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-11 21:02:18,864 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-11 21:02:18,865 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-11 21:02:18,865 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-11 21:02:18,865 INFO L133 SettingsManager]: * Use SBE=true [2019-01-11 21:02:18,866 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-11 21:02:18,867 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-11 21:02:18,867 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-11 21:02:18,867 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-11 21:02:18,867 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-11 21:02:18,868 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-11 21:02:18,868 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-11 21:02:18,868 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-11 21:02:18,868 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-11 21:02:18,869 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-11 21:02:18,870 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-11 21:02:18,870 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-11 21:02:18,870 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-11 21:02:18,870 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-11 21:02:18,871 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-11 21:02:18,871 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-11 21:02:18,871 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-11 21:02:18,871 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-11 21:02:18,872 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-11 21:02:18,873 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-11 21:02:18,873 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-11 21:02:18,873 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-11 21:02:18,873 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-11 21:02:18,874 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2964994cdaa1e60b18f6e8e9960cc97625ea606 [2019-01-11 21:02:18,913 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-11 21:02:18,932 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-11 21:02:18,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-11 21:02:18,937 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-11 21:02:18,938 INFO L276 PluginConnector]: CDTParser initialized [2019-01-11 21:02:18,939 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.i [2019-01-11 21:02:18,990 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59999fef3/802f58c4e1304976a812c61bb07879cd/FLAGf444cfb65 [2019-01-11 21:02:19,405 INFO L307 CDTParser]: Found 1 translation units. [2019-01-11 21:02:19,405 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/bitvector/sum02_false-unreach-call_true-no-overflow.i [2019-01-11 21:02:19,411 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59999fef3/802f58c4e1304976a812c61bb07879cd/FLAGf444cfb65 [2019-01-11 21:02:19,428 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59999fef3/802f58c4e1304976a812c61bb07879cd [2019-01-11 21:02:19,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-11 21:02:19,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-11 21:02:19,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-11 21:02:19,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-11 21:02:19,439 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-11 21:02:19,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f61ce2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19, skipping insertion in model container [2019-01-11 21:02:19,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-11 21:02:19,472 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-11 21:02:19,675 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-11 21:02:19,679 INFO L191 MainTranslator]: Completed pre-run [2019-01-11 21:02:19,696 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-11 21:02:19,712 INFO L195 MainTranslator]: Completed translation [2019-01-11 21:02:19,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19 WrapperNode [2019-01-11 21:02:19,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-11 21:02:19,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-11 21:02:19,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-11 21:02:19,714 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-11 21:02:19,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-11 21:02:19,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-11 21:02:19,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-11 21:02:19,748 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-11 21:02:19,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... [2019-01-11 21:02:19,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-11 21:02:19,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-11 21:02:19,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-11 21:02:19,772 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-11 21:02:19,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2019-01-11 21:02:19,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-11 21:02:19,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-11 21:02:20,051 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-11 21:02:20,052 INFO L286 CfgBuilder]: Removed 7 assue(true) statements. [2019-01-11 21:02:20,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 09:02:20 BoogieIcfgContainer [2019-01-11 21:02:20,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-11 21:02:20,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-11 21:02:20,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-11 21:02:20,058 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-11 21:02:20,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 09:02:19" (1/3) ... [2019-01-11 21:02:20,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 09:02:20, skipping insertion in model container [2019-01-11 21:02:20,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 09:02:19" (2/3) ... [2019-01-11 21:02:20,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 09:02:20, skipping insertion in model container [2019-01-11 21:02:20,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 09:02:20" (3/3) ... [2019-01-11 21:02:20,063 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02_false-unreach-call_true-no-overflow.i [2019-01-11 21:02:20,073 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-11 21:02:20,079 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-11 21:02:20,094 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-11 21:02:20,123 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-11 21:02:20,124 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-11 21:02:20,124 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-11 21:02:20,124 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-11 21:02:20,124 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-11 21:02:20,124 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-11 21:02:20,125 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-11 21:02:20,125 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-11 21:02:20,125 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-11 21:02:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-01-11 21:02:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-01-11 21:02:20,142 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 21:02:20,143 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-01-11 21:02:20,145 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-11 21:02:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 21:02:20,150 INFO L82 PathProgramCache]: Analyzing trace with hash 29776202, now seen corresponding path program 1 times [2019-01-11 21:02:20,152 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-11 21:02:20,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-11 21:02:20,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 21:02:20,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 21:02:20,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 21:02:20,222 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-01-11 21:02:20,222 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-01-11 21:02:20,222 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-01-11 21:02:20,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 21:02:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 21:02:20,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 21:02:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 21:02:20,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-11 21:02:20,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-11 21:02:20,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-01-11 21:02:20,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-11 21:02:20,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 21:02:20,325 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-01-11 21:02:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 21:02:20,379 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2019-01-11 21:02:20,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-11 21:02:20,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-01-11 21:02:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 21:02:20,398 INFO L225 Difference]: With dead ends: 19 [2019-01-11 21:02:20,399 INFO L226 Difference]: Without dead ends: 9 [2019-01-11 21:02:20,403 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-11 21:02:20,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-01-11 21:02:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-01-11 21:02:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-01-11 21:02:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-01-11 21:02:20,444 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2019-01-11 21:02:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 21:02:20,444 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-01-11 21:02:20,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-01-11 21:02:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-01-11 21:02:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-01-11 21:02:20,445 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 21:02:20,446 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-01-11 21:02:20,446 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-11 21:02:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 21:02:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1396608660, now seen corresponding path program 1 times [2019-01-11 21:02:20,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-11 21:02:20,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-11 21:02:20,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 21:02:20,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 21:02:20,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 21:02:20,457 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-01-11 21:02:20,458 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-01-11 21:02:20,458 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-01-11 21:02:20,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 21:02:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-11 21:02:20,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-11 21:02:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-11 21:02:20,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-01-11 21:02:20,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-01-11 21:02:20,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-11 21:02:20,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-11 21:02:20,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-01-11 21:02:20,623 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2019-01-11 21:02:20,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-11 21:02:20,699 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-01-11 21:02:20,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-11 21:02:20,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-01-11 21:02:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-11 21:02:20,701 INFO L225 Difference]: With dead ends: 14 [2019-01-11 21:02:20,701 INFO L226 Difference]: Without dead ends: 10 [2019-01-11 21:02:20,701 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-01-11 21:02:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-01-11 21:02:20,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-01-11 21:02:20,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-01-11 21:02:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-01-11 21:02:20,704 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2019-01-11 21:02:20,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-11 21:02:20,704 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-01-11 21:02:20,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-11 21:02:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-01-11 21:02:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-11 21:02:20,705 INFO L394 BasicCegarLoop]: Found error trace [2019-01-11 21:02:20,705 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-01-11 21:02:20,706 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-11 21:02:20,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-11 21:02:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2057893618, now seen corresponding path program 2 times [2019-01-11 21:02:20,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-11 21:02:20,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-11 21:02:20,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 21:02:20,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-11 21:02:20,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-11 21:02:20,718 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-01-11 21:02:20,718 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-01-11 21:02:20,718 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-01-11 21:02:20,734 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-01-11 21:02:31,499 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-01-11 21:02:31,499 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2019-01-11 21:02:31,519 INFO L285 seRefinementStrategy]: Strategy CamelRefinementStrategy was unsuccessful and could not determine trace feasibility. [2019-01-11 21:02:31,519 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-11 21:02:31,535 WARN L228 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-01-11 21:02:31,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 09:02:31 BoogieIcfgContainer [2019-01-11 21:02:31,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-11 21:02:31,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-11 21:02:31,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-11 21:02:31,537 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-11 21:02:31,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 09:02:20" (3/4) ... [2019-01-11 21:02:31,542 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-11 21:02:31,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-11 21:02:31,543 INFO L168 Benchmark]: Toolchain (without parser) took 12110.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -115.3 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2019-01-11 21:02:31,545 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-11 21:02:31,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.16 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-11 21:02:31,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.20 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-11 21:02:31,547 INFO L168 Benchmark]: Boogie Preprocessor took 23.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-11 21:02:31,549 INFO L168 Benchmark]: RCFGBuilder took 282.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-01-11 21:02:31,550 INFO L168 Benchmark]: TraceAbstraction took 11480.96 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: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB. [2019-01-11 21:02:31,551 INFO L168 Benchmark]: Witness Printer took 6.02 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. [2019-01-11 21:02:31,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 278.16 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 941.9 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 34.20 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 282.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -178.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11480.96 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: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 11.5 GB. * Witness Printer took 6.02 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: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] i=0 [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND TRUE i<=n [L13] sn = sn + i [L12] i++ [L12] COND FALSE !(i<=n) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. UNKNOWN Result, 11.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 2 SDslu, 15 SDs, 0 SdLazy, 18 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 10.7s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 8 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...