NO Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 07:51:25,452 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 07:51:25,454 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 07:51:25,465 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 07:51:25,466 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 07:51:25,467 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 07:51:25,468 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 07:51:25,469 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 07:51:25,471 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 07:51:25,472 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 07:51:25,472 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 07:51:25,473 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 07:51:25,474 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 07:51:25,474 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 07:51:25,475 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 07:51:25,476 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 07:51:25,477 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 07:51:25,479 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 07:51:25,481 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 07:51:25,482 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 07:51:25,483 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 07:51:25,484 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 07:51:25,486 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 07:51:25,486 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 07:51:25,486 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 07:51:25,487 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 07:51:25,488 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 07:51:25,488 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 07:51:25,489 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 07:51:25,489 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 07:51:25,490 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 07:51:25,491 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 07:51:25,492 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 07:51:25,492 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 07:51:25,492 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 07:51:25,492 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 07:51:25,493 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 07:51:25,493 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 07:51:25,494 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 07:51:25,494 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 07:51:25,508 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 07:51:25,509 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 07:51:25,510 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 07:51:25,510 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 07:51:25,510 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 07:51:25,510 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 07:51:25,511 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 07:51:25,511 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 07:51:25,511 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 07:51:25,511 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 07:51:25,511 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 07:51:25,511 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 07:51:25,512 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 07:51:25,512 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 07:51:25,512 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 07:51:25,512 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 07:51:25,512 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 07:51:25,513 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 07:51:25,513 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 07:51:25,513 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 07:51:25,513 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 07:51:25,513 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 07:51:25,514 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 07:51:25,514 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 07:51:25,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 07:51:25,514 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 07:51:25,514 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 07:51:25,514 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 07:51:25,515 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 07:51:25,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 07:51:25,554 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 07:51:25,557 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 07:51:25,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 07:51:25,559 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 07:51:25,560 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 07:51:25,623 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/7ecb1d95e267453782eaa4464f475d77/FLAGe5485608b !SESSION 2020-06-22 07:51:23.148 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-06-22 07:51:25.895 !MESSAGE Indexed 'FLAGe5485608b' (0 sources, 0 headers) in 0.006 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-06-22 07:51:25,978 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 07:51:25,978 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 07:51:25,985 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/7ecb1d95e267453782eaa4464f475d77/FLAGe5485608b [2020-06-22 07:51:26,431 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/7ecb1d95e267453782eaa4464f475d77 [2020-06-22 07:51:26,443 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 07:51:26,444 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 07:51:26,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 07:51:26,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 07:51:26,449 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 07:51:26,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c20e2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26, skipping insertion in model container [2020-06-22 07:51:26,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 07:51:26,477 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 07:51:26,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 07:51:26,636 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 07:51:26,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 07:51:26,719 INFO L195 MainTranslator]: Completed translation [2020-06-22 07:51:26,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26 WrapperNode [2020-06-22 07:51:26,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 07:51:26,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 07:51:26,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 07:51:26,721 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 07:51:26,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 07:51:26,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 07:51:26,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 07:51:26,754 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 07:51:26,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 07:51:26,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 07:51:26,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 07:51:26,772 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 07:51:26,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (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 [2020-06-22 07:51:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 07:51:26,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 07:51:26,975 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 07:51:26,976 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-22 07:51:26,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:51:26 BoogieIcfgContainer [2020-06-22 07:51:26,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 07:51:26,978 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 07:51:26,978 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 07:51:26,980 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 07:51:26,981 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:51:26" (1/1) ... [2020-06-22 07:51:26,994 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-06-22 07:51:26,996 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 07:51:26,997 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 07:51:26,997 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 07:51:26,997 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 07:51:26,999 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 07:51:27,000 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 07:51:27,000 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 07:51:27,014 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 07:51:27,027 INFO L200 BlockEncoder]: SBE split 1 edges [2020-06-22 07:51:27,032 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-22 07:51:27,033 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 07:51:27,044 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-22 07:51:27,046 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-06-22 07:51:27,048 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 07:51:27,048 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 07:51:27,048 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 07:51:27,048 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 07:51:27,049 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2020-06-22 07:51:27,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 07:51:27 BasicIcfg [2020-06-22 07:51:27,049 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 07:51:27,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 07:51:27,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 07:51:27,053 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 07:51:27,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 07:51:26" (1/4) ... [2020-06-22 07:51:27,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55031bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:51:27, skipping insertion in model container [2020-06-22 07:51:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (2/4) ... [2020-06-22 07:51:27,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55031bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:51:27, skipping insertion in model container [2020-06-22 07:51:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:51:26" (3/4) ... [2020-06-22 07:51:27,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55031bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:51:27, skipping insertion in model container [2020-06-22 07:51:27,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 07:51:27" (4/4) ... [2020-06-22 07:51:27,057 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 07:51:27,067 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 07:51:27,074 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-22 07:51:27,091 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-22 07:51:27,119 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 07:51:27,120 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 07:51:27,120 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 07:51:27,120 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 07:51:27,120 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 07:51:27,120 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 07:51:27,120 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 07:51:27,121 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 07:51:27,121 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 07:51:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-06-22 07:51:27,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-22 07:51:27,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-06-22 07:51:27,191 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-22 07:51:27,191 INFO L451 ceAbstractionStarter]: At program point L13-1(lines 9 16) the Hoare annotation is: true [2020-06-22 07:51:27,191 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-06-22 07:51:27,192 INFO L448 ceAbstractionStarter]: For program point L10-2(lines 9 16) no Hoare annotation was computed. [2020-06-22 07:51:27,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:51:27 BasicIcfg [2020-06-22 07:51:27,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 07:51:27,201 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 07:51:27,201 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 07:51:27,204 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 07:51:27,205 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:51:27,205 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.06 07:51:26" (1/5) ... [2020-06-22 07:51:27,205 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3695809f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 07:51:27, skipping insertion in model container [2020-06-22 07:51:27,206 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:51:27,206 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 07:51:26" (2/5) ... [2020-06-22 07:51:27,206 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3695809f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.06 07:51:27, skipping insertion in model container [2020-06-22 07:51:27,206 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:51:27,206 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:51:26" (3/5) ... [2020-06-22 07:51:27,207 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3695809f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 07:51:27, skipping insertion in model container [2020-06-22 07:51:27,207 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:51:27,207 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 07:51:27" (4/5) ... [2020-06-22 07:51:27,207 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3695809f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 07:51:27, skipping insertion in model container [2020-06-22 07:51:27,207 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-22 07:51:27,208 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:51:27" (5/5) ... [2020-06-22 07:51:27,209 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 07:51:27,234 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 07:51:27,234 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-22 07:51:27,235 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-22 07:51:27,235 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 07:51:27,235 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 07:51:27,235 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 07:51:27,235 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-22 07:51:27,235 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 07:51:27,235 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-22 07:51:27,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-06-22 07:51:27,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 07:51:27,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 07:51:27,256 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 07:51:27,261 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 07:51:27,261 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 07:51:27,261 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-22 07:51:27,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-06-22 07:51:27,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-22 07:51:27,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 07:51:27,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 07:51:27,262 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-22 07:51:27,262 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 07:51:27,267 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [32] ULTIMATE.startENTRY-->L13-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 5#L13-1true [2020-06-22 07:51:27,268 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true [35] L13-1-->L10: Formula: (and (<= v_ULTIMATE.start_main_~i~0_10 5) (<= 0 (+ v_ULTIMATE.start_main_~i~0_10 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 3#L10true [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_13) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[] 6#L10-2true [38] L10-2-->L13-1: Formula: (and (< v_ULTIMATE.start_main_~i~0_7 0) (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 5#L13-1true [2020-06-22 07:51:27,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:51:27,274 INFO L82 PathProgramCache]: Analyzing trace with hash 63, now seen corresponding path program 1 times [2020-06-22 07:51:27,276 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:51:27,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:51:27,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:27,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:51:27,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:51:27,343 INFO L82 PathProgramCache]: Analyzing trace with hash 64766, now seen corresponding path program 1 times [2020-06-22 07:51:27,343 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:51:27,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:51:27,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:27,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:51:27,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:51:27,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1911808, now seen corresponding path program 1 times [2020-06-22 07:51:27,357 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:51:27,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:51:27,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:27,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:51:27,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:27,416 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 07:51:27,418 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 07:51:27,418 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 07:51:27,418 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 07:51:27,418 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-22 07:51:27,418 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 07:51:27,419 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 07:51:27,419 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 07:51:27,419 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 07:51:27,419 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 07:51:27,419 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 07:51:27,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:51:27,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:51:27,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:51:27,546 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 07:51:27,547 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 07:51:27,555 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-22 07:51:27,555 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 07:51:27,590 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-22 07:51:27,590 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-22 07:51:27,598 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-22 07:51:27,623 INFO L216 LassoAnalysis]: Preferences: [2020-06-22 07:51:27,623 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-22 07:51:27,623 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-22 07:51:27,623 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-22 07:51:27,623 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-22 07:51:27,623 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-22 07:51:27,623 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-22 07:51:27,624 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-22 07:51:27,624 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-22 07:51:27,624 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-22 07:51:27,624 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-22 07:51:27,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:51:27,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:51:27,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-22 07:51:27,716 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-22 07:51:27,722 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-22 07:51:27,738 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-06-22 07:51:27,740 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-22 07:51:27,740 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-22 07:51:27,741 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-22 07:51:27,741 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-22 07:51:27,741 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-22 07:51:27,743 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-22 07:51:27,744 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-22 07:51:27,753 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-22 07:51:27,759 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-22 07:51:27,759 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-22 07:51:27,761 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-22 07:51:27,761 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-22 07:51:27,762 INFO L518 LassoAnalysis]: Proved termination. [2020-06-22 07:51:27,763 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-06-22 07:51:27,764 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-22 07:51:27,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:51:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:51:27,808 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-22 07:51:27,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 07:51:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:51:27,819 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 07:51:27,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 07:51:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 07:51:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 07:51:27,865 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-22 07:51:27,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-22 07:51:27,905 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-06-22 07:51:27,910 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-06-22 07:51:27,912 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-06-22 07:51:27,983 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 18 states and 27 transitions. Complement of second has 8 states. [2020-06-22 07:51:27,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-06-22 07:51:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-22 07:51:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2020-06-22 07:51:27,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 3 letters. [2020-06-22 07:51:27,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 07:51:27,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 4 letters. Loop has 3 letters. [2020-06-22 07:51:27,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 07:51:27,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 1 letters. Loop has 6 letters. [2020-06-22 07:51:27,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-22 07:51:27,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 27 transitions. [2020-06-22 07:51:27,998 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-06-22 07:51:28,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 15 states and 21 transitions. [2020-06-22 07:51:28,004 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-06-22 07:51:28,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-06-22 07:51:28,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2020-06-22 07:51:28,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-22 07:51:28,005 INFO L706 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2020-06-22 07:51:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2020-06-22 07:51:28,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-06-22 07:51:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-06-22 07:51:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2020-06-22 07:51:28,035 INFO L729 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-06-22 07:51:28,035 INFO L609 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-06-22 07:51:28,035 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-22 07:51:28,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2020-06-22 07:51:28,036 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-06-22 07:51:28,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-22 07:51:28,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-22 07:51:28,037 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-22 07:51:28,037 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-22 07:51:28,037 INFO L794 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY [32] ULTIMATE.startENTRY-->L13-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 81#L13-1 [35] L13-1-->L10: Formula: (and (<= v_ULTIMATE.start_main_~i~0_10 5) (<= 0 (+ v_ULTIMATE.start_main_~i~0_10 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 87#L10 [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_13) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[] 77#L10-2 [2020-06-22 07:51:28,037 INFO L796 eck$LassoCheckResult]: Loop: 77#L10-2 [43] L10-2-->L13-1: Formula: (>= v_ULTIMATE.start_main_~i~0_8 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[] 82#L13-1 [35] L13-1-->L10: Formula: (and (<= v_ULTIMATE.start_main_~i~0_10 5) (<= 0 (+ v_ULTIMATE.start_main_~i~0_10 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 76#L10 [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_13) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[] 77#L10-2 [2020-06-22 07:51:28,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:51:28,038 INFO L82 PathProgramCache]: Analyzing trace with hash 61670, now seen corresponding path program 1 times [2020-06-22 07:51:28,038 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:51:28,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:51:28,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:28,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:51:28,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:51:28,045 INFO L82 PathProgramCache]: Analyzing trace with hash 72241, now seen corresponding path program 1 times [2020-06-22 07:51:28,046 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:51:28,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:51:28,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:28,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:51:28,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:28,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 07:51:28,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1837253420, now seen corresponding path program 1 times [2020-06-22 07:51:28,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 07:51:28,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 07:51:28,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:28,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 07:51:28,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 07:51:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 07:51:28,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.06 07:51:28 BasicIcfg [2020-06-22 07:51:28,132 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 07:51:28,132 INFO L168 Benchmark]: Toolchain (without parser) took 1688.87 ms. Allocated memory was 649.6 MB in the beginning and 692.6 MB in the end (delta: 43.0 MB). Free memory was 565.2 MB in the beginning and 543.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 50.3 GB. [2020-06-22 07:51:28,134 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 07:51:28,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.02 ms. Allocated memory was 649.6 MB in the beginning and 692.6 MB in the end (delta: 43.0 MB). Free memory was 564.1 MB in the beginning and 659.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. [2020-06-22 07:51:28,136 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.54 ms. Allocated memory is still 692.6 MB. Free memory was 659.5 MB in the beginning and 656.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. [2020-06-22 07:51:28,136 INFO L168 Benchmark]: Boogie Preprocessor took 18.38 ms. Allocated memory is still 692.6 MB. Free memory was 656.7 MB in the beginning and 655.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 07:51:28,137 INFO L168 Benchmark]: RCFGBuilder took 205.45 ms. Allocated memory is still 692.6 MB. Free memory was 655.6 MB in the beginning and 642.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. [2020-06-22 07:51:28,138 INFO L168 Benchmark]: BlockEncodingV2 took 71.58 ms. Allocated memory is still 692.6 MB. Free memory was 642.0 MB in the beginning and 636.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-06-22 07:51:28,138 INFO L168 Benchmark]: TraceAbstraction took 149.90 ms. Allocated memory is still 692.6 MB. Free memory was 635.5 MB in the beginning and 626.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. [2020-06-22 07:51:28,139 INFO L168 Benchmark]: BuchiAutomizer took 931.04 ms. Allocated memory is still 692.6 MB. Free memory was 626.8 MB in the beginning and 543.4 MB in the end (delta: 83.4 MB). Peak memory consumption was 83.4 MB. Max. memory is 50.3 GB. [2020-06-22 07:51:28,143 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 4 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 585.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 275.02 ms. Allocated memory was 649.6 MB in the beginning and 692.6 MB in the end (delta: 43.0 MB). Free memory was 564.1 MB in the beginning and 659.5 MB in the end (delta: -95.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.54 ms. Allocated memory is still 692.6 MB. Free memory was 659.5 MB in the beginning and 656.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 18.38 ms. Allocated memory is still 692.6 MB. Free memory was 656.7 MB in the beginning and 655.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 205.45 ms. Allocated memory is still 692.6 MB. Free memory was 655.6 MB in the beginning and 642.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.58 ms. Allocated memory is still 692.6 MB. Free memory was 642.0 MB in the beginning and 636.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 149.90 ms. Allocated memory is still 692.6 MB. Free memory was 635.5 MB in the beginning and 626.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 931.04 ms. Allocated memory is still 692.6 MB. Free memory was 626.8 MB in the beginning and 543.4 MB in the end (delta: 83.4 MB). Peak memory consumption was 83.4 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. - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 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=4occurred 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 0 deterministic, 1 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function -1 * i and consists of 6 locations. The remainder module has 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 11 SDslu, 0 SDs, 0 SdLazy, 30 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq139 hnf95 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 25ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27224cc3=0, \result=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !ENTRY org.eclipse.core.resources 2 10035 2020-06-22 07:51:28.377 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check