NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 23:08:23,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 23:08:23,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 23:08:23,449 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 23:08:23,449 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 23:08:23,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 23:08:23,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 23:08:23,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 23:08:23,455 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 23:08:23,455 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 23:08:23,456 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 23:08:23,456 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 23:08:23,457 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 23:08:23,458 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 23:08:23,459 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 23:08:23,460 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 23:08:23,461 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 23:08:23,462 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 23:08:23,464 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 23:08:23,466 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 23:08:23,467 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 23:08:23,468 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 23:08:23,470 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 23:08:23,470 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 23:08:23,470 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 23:08:23,471 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 23:08:23,471 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 23:08:23,472 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 23:08:23,472 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 23:08:23,473 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 23:08:23,474 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 23:08:23,474 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 23:08:23,475 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 23:08:23,476 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 23:08:23,476 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 23:08:23,477 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 23:08:23,477 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 23:08:23,478 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 23:08:23,478 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 23:08:23,479 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-21 23:08:23,494 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 23:08:23,494 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 23:08:23,495 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 23:08:23,495 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 23:08:23,495 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 23:08:23,496 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:08:23,496 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 23:08:23,496 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 23:08:23,496 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 23:08:23,496 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 23:08:23,496 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 23:08:23,497 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 23:08:23,497 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 23:08:23,497 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 23:08:23,497 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:08:23,497 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 23:08:23,497 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 23:08:23,498 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 23:08:23,498 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 23:08:23,498 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 23:08:23,498 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 23:08:23,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 23:08:23,499 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 23:08:23,499 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 23:08:23,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:08:23,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 23:08:23,499 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 23:08:23,499 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 23:08:23,500 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 23:08:23,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 23:08:23,540 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 23:08:23,544 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 23:08:23,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 23:08:23,546 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 23:08:23,546 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:08:23,611 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/f8cf72ef805545968b7c79da7c5d3235/FLAG18b265db9 !SESSION 2020-06-21 23:08:21.141 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-06-21 23:08:23.879 !MESSAGE Indexed 'FLAG18b265db9' (0 sources, 0 headers) in 0.006 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-06-21 23:08:23,954 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 23:08:23,954 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-21 23:08:23,961 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/f8cf72ef805545968b7c79da7c5d3235/FLAG18b265db9 [2020-06-21 23:08:24,441 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/f8cf72ef805545968b7c79da7c5d3235 [2020-06-21 23:08:24,453 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 23:08:24,454 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 23:08:24,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 23:08:24,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 23:08:24,459 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 23:08:24,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7dffe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24, skipping insertion in model container [2020-06-21 23:08:24,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 23:08:24,487 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 23:08:24,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:08:24,646 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 23:08:24,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:08:24,743 INFO L195 MainTranslator]: Completed translation [2020-06-21 23:08:24,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24 WrapperNode [2020-06-21 23:08:24,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 23:08:24,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 23:08:24,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 23:08:24,745 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 23:08:24,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 23:08:24,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 23:08:24,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 23:08:24,782 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 23:08:24,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... [2020-06-21 23:08:24,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 23:08:24,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 23:08:24,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 23:08:24,799 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 23:08:24,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:08:24,869 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-06-21 23:08:24,870 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-06-21 23:08:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 23:08:24,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 23:08:25,004 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 23:08:25,004 INFO L286 CfgBuilder]: Removed 4 assue(true) statements. [2020-06-21 23:08:25,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:08:25 BoogieIcfgContainer [2020-06-21 23:08:25,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 23:08:25,007 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 23:08:25,007 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 23:08:25,009 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 23:08:25,010 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:08:25" (1/1) ... [2020-06-21 23:08:25,026 INFO L313 BlockEncoder]: Initial Icfg 11 locations, 12 edges [2020-06-21 23:08:25,028 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 23:08:25,028 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 23:08:25,029 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 23:08:25,029 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:08:25,032 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 23:08:25,033 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 23:08:25,033 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 23:08:25,048 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 23:08:25,063 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-21 23:08:25,068 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:08:25,070 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:08:25,082 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-21 23:08:25,084 INFO L70 RemoveSinkStates]: Removed 2 edges and 2 locations by removing sink states [2020-06-21 23:08:25,086 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:08:25,086 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:08:25,087 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:08:25,087 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:08:25,087 INFO L313 BlockEncoder]: Encoded RCFG 7 locations, 9 edges [2020-06-21 23:08:25,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:08:25 BasicIcfg [2020-06-21 23:08:25,088 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 23:08:25,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 23:08:25,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 23:08:25,093 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 23:08:25,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 11:08:24" (1/4) ... [2020-06-21 23:08:25,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231589a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:08:25, skipping insertion in model container [2020-06-21 23:08:25,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (2/4) ... [2020-06-21 23:08:25,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231589a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:08:25, skipping insertion in model container [2020-06-21 23:08:25,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:08:25" (3/4) ... [2020-06-21 23:08:25,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231589a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:08:25, skipping insertion in model container [2020-06-21 23:08:25,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:08:25" (4/4) ... [2020-06-21 23:08:25,098 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:08:25,109 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 23:08:25,117 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 23:08:25,136 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 23:08:25,167 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:08:25,168 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 23:08:25,168 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 23:08:25,168 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:08:25,168 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:08:25,168 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:08:25,168 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 23:08:25,169 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:08:25,169 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 23:08:25,186 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-06-21 23:08:25,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 23:08:25,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-06-21 23:08:25,250 INFO L451 ceAbstractionStarter]: At program point recENTRY(lines 10 14) the Hoare annotation is: true [2020-06-21 23:08:25,251 INFO L451 ceAbstractionStarter]: At program point L12(line 12) the Hoare annotation is: true [2020-06-21 23:08:25,251 INFO L448 ceAbstractionStarter]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-06-21 23:08:25,251 INFO L448 ceAbstractionStarter]: For program point L11-1(lines 10 14) no Hoare annotation was computed. [2020-06-21 23:08:25,251 INFO L448 ceAbstractionStarter]: For program point recEXIT(lines 10 14) no Hoare annotation was computed. [2020-06-21 23:08:25,251 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 23:08:25,252 INFO L451 ceAbstractionStarter]: At program point L18(line 18) the Hoare annotation is: true [2020-06-21 23:08:25,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:08:25 BasicIcfg [2020-06-21 23:08:25,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 23:08:25,255 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 23:08:25,256 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 23:08:25,259 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 23:08:25,260 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:25,260 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 11:08:24" (1/5) ... [2020-06-21 23:08:25,261 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e63e908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:08:25, skipping insertion in model container [2020-06-21 23:08:25,261 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:25,261 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:08:24" (2/5) ... [2020-06-21 23:08:25,261 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e63e908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:08:25, skipping insertion in model container [2020-06-21 23:08:25,261 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:25,262 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:08:25" (3/5) ... [2020-06-21 23:08:25,262 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e63e908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:08:25, skipping insertion in model container [2020-06-21 23:08:25,262 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:25,262 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:08:25" (4/5) ... [2020-06-21 23:08:25,263 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e63e908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:08:25, skipping insertion in model container [2020-06-21 23:08:25,263 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:08:25,263 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:08:25" (5/5) ... [2020-06-21 23:08:25,264 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:08:25,291 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:08:25,291 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 23:08:25,292 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 23:08:25,292 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:08:25,292 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:08:25,292 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:08:25,292 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 23:08:25,292 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:08:25,292 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 23:08:25,296 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-06-21 23:08:25,315 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:08:25,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:08:25,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:08:25,322 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 23:08:25,323 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:08:25,323 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 23:08:25,323 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-06-21 23:08:25,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:08:25,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:08:25,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:08:25,325 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 23:08:25,325 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:08:25,330 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [21] ULTIMATE.startENTRY-->L18: Formula: (= v_ULTIMATE.start_main_~n~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~n~0] 7#L18true [24] L18-->recENTRY: Formula: (and (= |v_rec_#in~xInParam_2| v_ULTIMATE.start_main_~n~0_5) (= |v_rec_#in~yInParam_2| (+ v_ULTIMATE.start_main_~n~0_5 1))) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_5} OutVars{rec_#in~x=|v_rec_#in~xInParam_2|, rec_#in~y=|v_rec_#in~yInParam_2|} AuxVars[] AssignedVars[rec_#in~x, rec_#in~y]< 3#recENTRYtrue [2020-06-21 23:08:25,331 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue [20] recENTRY-->L11: Formula: (and (= v_rec_~x_1 |v_rec_#in~x_1|) (= v_rec_~y_1 |v_rec_#in~y_1|)) InVars {rec_#in~x=|v_rec_#in~x_1|, rec_#in~y=|v_rec_#in~y_1|} OutVars{rec_~y=v_rec_~y_1, rec_~x=v_rec_~x_1, rec_#in~x=|v_rec_#in~x_1|, rec_#in~y=|v_rec_#in~y_1|} AuxVars[] AssignedVars[rec_~y, rec_~x] 8#L11true [25] L11-->L12: Formula: (and (<= v_rec_~x_2 23) (<= 0 (+ v_rec_~x_2 42))) InVars {rec_~x=v_rec_~x_2} OutVars{rec_~x=v_rec_~x_2} AuxVars[] AssignedVars[] 5#L12true [23] L12-->recENTRY: Formula: (and (= |v_rec_#in~xInParam_1| (+ (* 2 v_rec_~y_3) (- 2))) (= |v_rec_#in~yInParam_1| (+ v_rec_~x_5 1))) InVars {rec_~y=v_rec_~y_3, rec_~x=v_rec_~x_5} OutVars{rec_#in~x=|v_rec_#in~xInParam_1|, rec_#in~y=|v_rec_#in~yInParam_1|} AuxVars[] AssignedVars[rec_#in~x, rec_#in~y]< 3#recENTRYtrue [2020-06-21 23:08:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:25,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1636, now seen corresponding path program 1 times [2020-06-21 23:08:25,339 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:25,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:25,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:25,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:25,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:25,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:25,416 INFO L82 PathProgramCache]: Analyzing trace with hash 49809, now seen corresponding path program 1 times [2020-06-21 23:08:25,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:25,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:25,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:25,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:25,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:08:25,430 INFO L82 PathProgramCache]: Analyzing trace with hash 48758094, now seen corresponding path program 1 times [2020-06-21 23:08:25,431 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:08:25,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:08:25,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:25,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:08:25,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:08:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:08:25,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:08:25 BasicIcfg [2020-06-21 23:08:25,601 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 23:08:25,602 INFO L168 Benchmark]: Toolchain (without parser) took 1148.59 ms. Allocated memory is still 649.6 MB. Free memory was 566.3 MB in the beginning and 557.8 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:25,604 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 591.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:08:25,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.46 ms. Allocated memory is still 649.6 MB. Free memory was 565.2 MB in the beginning and 616.4 MB in the end (delta: -51.2 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:25,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.40 ms. Allocated memory is still 649.6 MB. Free memory was 616.4 MB in the beginning and 615.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:25,606 INFO L168 Benchmark]: Boogie Preprocessor took 16.70 ms. Allocated memory is still 649.6 MB. Free memory was 615.4 MB in the beginning and 614.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:25,606 INFO L168 Benchmark]: RCFGBuilder took 207.55 ms. Allocated memory is still 649.6 MB. Free memory was 614.3 MB in the beginning and 597.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:25,607 INFO L168 Benchmark]: BlockEncodingV2 took 81.71 ms. Allocated memory is still 649.6 MB. Free memory was 597.9 MB in the beginning and 593.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:25,608 INFO L168 Benchmark]: TraceAbstraction took 165.81 ms. Allocated memory is still 649.6 MB. Free memory was 592.5 MB in the beginning and 583.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:25,608 INFO L168 Benchmark]: BuchiAutomizer took 345.87 ms. Allocated memory is still 649.6 MB. Free memory was 582.6 MB in the beginning and 557.8 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 50.3 GB. [2020-06-21 23:08:25,612 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 11 locations, 12 edges - StatisticsResult: Encoded RCFG 7 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 591.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 289.46 ms. Allocated memory is still 649.6 MB. Free memory was 565.2 MB in the beginning and 616.4 MB in the end (delta: -51.2 MB). Peak memory consumption was 28.4 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 36.40 ms. Allocated memory is still 649.6 MB. Free memory was 616.4 MB in the beginning and 615.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 16.70 ms. Allocated memory is still 649.6 MB. Free memory was 615.4 MB in the beginning and 614.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 207.55 ms. Allocated memory is still 649.6 MB. Free memory was 614.3 MB in the beginning and 597.9 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 81.71 ms. Allocated memory is still 649.6 MB. Free memory was 597.9 MB in the beginning and 593.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 50.3 GB. * TraceAbstraction took 165.81 ms. Allocated memory is still 649.6 MB. Free memory was 592.5 MB in the beginning and 583.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 345.87 ms. Allocated memory is still 649.6 MB. Free memory was 582.6 MB in the beginning and 557.8 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 7 locations, 0 error locations. SAFE Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {x=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@31b07e6b=0, \result=0, \old(x)=0, NULL=0, n=0, \old(y)=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] int n = __VERIFIER_nondet_int(); [L18] CALL rec(n, n + 1) Loop: [L11] COND TRUE x <= 23 && x >= -42 [L12] CALL rec(2*y-2, x + 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 23:08:25.843 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check