YES Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-21 23:36:07,862 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-21 23:36:07,864 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-21 23:36:07,875 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-21 23:36:07,875 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-21 23:36:07,876 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-21 23:36:07,878 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-21 23:36:07,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-21 23:36:07,881 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-21 23:36:07,882 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-21 23:36:07,883 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-21 23:36:07,883 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-21 23:36:07,884 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-21 23:36:07,885 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-21 23:36:07,886 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-21 23:36:07,887 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-21 23:36:07,888 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-21 23:36:07,889 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-21 23:36:07,891 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-21 23:36:07,893 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-21 23:36:07,894 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-21 23:36:07,895 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-21 23:36:07,898 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-21 23:36:07,898 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-21 23:36:07,898 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-21 23:36:07,899 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-21 23:36:07,899 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-21 23:36:07,900 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-21 23:36:07,901 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-21 23:36:07,901 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-21 23:36:07,902 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-21 23:36:07,903 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-21 23:36:07,904 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-21 23:36:07,904 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-21 23:36:07,905 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-21 23:36:07,905 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-21 23:36:07,905 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-21 23:36:07,906 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-21 23:36:07,907 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-21 23:36:07,907 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-06-21 23:36:07,923 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-21 23:36:07,923 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-21 23:36:07,924 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-21 23:36:07,924 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-21 23:36:07,925 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-21 23:36:07,925 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:36:07,925 INFO L133 SettingsManager]: * Use SBE=true [2020-06-21 23:36:07,925 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-21 23:36:07,925 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-21 23:36:07,926 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-21 23:36:07,926 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-21 23:36:07,926 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-21 23:36:07,926 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-21 23:36:07,926 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-21 23:36:07,926 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:07,927 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-21 23:36:07,927 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-21 23:36:07,927 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-21 23:36:07,927 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-21 23:36:07,927 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-21 23:36:07,928 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-21 23:36:07,928 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-21 23:36:07,928 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-21 23:36:07,928 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-21 23:36:07,928 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-21 23:36:07,929 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-21 23:36:07,929 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-21 23:36:07,929 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-21 23:36:07,929 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-21 23:36:07,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-21 23:36:07,968 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-21 23:36:07,973 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-21 23:36:07,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-21 23:36:07,974 INFO L276 PluginConnector]: CDTParser initialized [2020-06-21 23:36:07,975 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 23:36:08,050 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/f2f56d5d388c4a7699c1e94c38ca2bfb/FLAG09d247c2b !SESSION 2020-06-21 23:36:05.571 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.cdt.core 1 0 2020-06-21 23:36:08.326 !MESSAGE Indexed 'FLAG09d247c2b' (0 sources, 0 headers) in 0.007 sec: 0 declarations; 0 references; 0 unresolved inclusions; 0 syntax errors; 0 unresolved names (0%) [2020-06-21 23:36:08,406 INFO L307 CDTParser]: Found 1 translation units. [2020-06-21 23:36:08,407 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-06-21 23:36:08,413 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/f2f56d5d388c4a7699c1e94c38ca2bfb/FLAG09d247c2b [2020-06-21 23:36:08,847 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/f2f56d5d388c4a7699c1e94c38ca2bfb [2020-06-21 23:36:08,859 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-21 23:36:08,860 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-21 23:36:08,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-21 23:36:08,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-21 23:36:08,865 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-21 23:36:08,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:36:08" (1/1) ... [2020-06-21 23:36:08,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24623fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:08, skipping insertion in model container [2020-06-21 23:36:08,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 11:36:08" (1/1) ... [2020-06-21 23:36:08,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-21 23:36:08,893 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-21 23:36:09,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:36:09,052 INFO L191 MainTranslator]: Completed pre-run [2020-06-21 23:36:09,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-21 23:36:09,136 INFO L195 MainTranslator]: Completed translation [2020-06-21 23:36:09,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09 WrapperNode [2020-06-21 23:36:09,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-21 23:36:09,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-21 23:36:09,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-21 23:36:09,137 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-21 23:36:09,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-21 23:36:09,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-21 23:36:09,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-21 23:36:09,171 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-21 23:36:09,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-21 23:36:09,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-21 23:36:09,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-21 23:36:09,191 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-21 23:36:09,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (1/1) ... No working directory specified, using /export/starexec/sandbox2/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 23:36:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-21 23:36:09,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-21 23:36:09,387 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-21 23:36:09,387 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. [2020-06-21 23:36:09,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:36:09 BoogieIcfgContainer [2020-06-21 23:36:09,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-21 23:36:09,389 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-21 23:36:09,389 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-21 23:36:09,391 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-21 23:36:09,392 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:36:09" (1/1) ... [2020-06-21 23:36:09,406 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 12 edges [2020-06-21 23:36:09,407 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-21 23:36:09,408 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-21 23:36:09,409 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-21 23:36:09,409 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-21 23:36:09,411 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-21 23:36:09,412 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-21 23:36:09,412 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-21 23:36:09,426 INFO L185 BlockEncoder]: Using Use SBE [2020-06-21 23:36:09,441 INFO L200 BlockEncoder]: SBE split 2 edges [2020-06-21 23:36:09,445 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-06-21 23:36:09,447 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:36:09,456 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-06-21 23:36:09,458 INFO L70 RemoveSinkStates]: Removed 4 edges and 2 locations by removing sink states [2020-06-21 23:36:09,459 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:36:09,459 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:36:09,464 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-06-21 23:36:09,465 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:36:09,466 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-21 23:36:09,466 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-21 23:36:09,466 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-21 23:36:09,466 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-21 23:36:09,467 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2020-06-21 23:36:09,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:36:09 BasicIcfg [2020-06-21 23:36:09,467 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-21 23:36:09,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-21 23:36:09,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-21 23:36:09,472 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-21 23:36:09,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 11:36:08" (1/4) ... [2020-06-21 23:36:09,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22095d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:36:09, skipping insertion in model container [2020-06-21 23:36:09,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (2/4) ... [2020-06-21 23:36:09,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22095d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 11:36:09, skipping insertion in model container [2020-06-21 23:36:09,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:36:09" (3/4) ... [2020-06-21 23:36:09,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22095d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:36:09, skipping insertion in model container [2020-06-21 23:36:09,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:36:09" (4/4) ... [2020-06-21 23:36:09,475 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:36:09,485 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-21 23:36:09,493 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-06-21 23:36:09,510 INFO L257 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-06-21 23:36:09,538 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:36:09,539 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-21 23:36:09,539 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-21 23:36:09,539 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:36:09,540 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:36:09,540 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:36:09,540 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-21 23:36:09,540 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:36:09,540 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-21 23:36:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-06-21 23:36:09,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-06-21 23:36:09,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-06-21 23:36:09,612 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-06-21 23:36:09,612 INFO L448 ceAbstractionStarter]: For program point L13(lines 13 17) no Hoare annotation was computed. [2020-06-21 23:36:09,612 INFO L448 ceAbstractionStarter]: For program point L13-2(lines 13 17) no Hoare annotation was computed. [2020-06-21 23:36:09,613 INFO L451 ceAbstractionStarter]: At program point L12-2(lines 12 19) the Hoare annotation is: true [2020-06-21 23:36:09,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:36:09 BasicIcfg [2020-06-21 23:36:09,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-21 23:36:09,622 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-21 23:36:09,622 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-21 23:36:09,625 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-21 23:36:09,626 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:36:09,626 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.06 11:36:08" (1/5) ... [2020-06-21 23:36:09,627 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a26deb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:36:09, skipping insertion in model container [2020-06-21 23:36:09,627 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:36:09,627 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 11:36:09" (2/5) ... [2020-06-21 23:36:09,627 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a26deb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.06 11:36:09, skipping insertion in model container [2020-06-21 23:36:09,628 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:36:09,628 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 11:36:09" (3/5) ... [2020-06-21 23:36:09,628 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a26deb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:36:09, skipping insertion in model container [2020-06-21 23:36:09,628 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:36:09,628 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 21.06 11:36:09" (4/5) ... [2020-06-21 23:36:09,629 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a26deb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:36:09, skipping insertion in model container [2020-06-21 23:36:09,629 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-06-21 23:36:09,629 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 11:36:09" (5/5) ... [2020-06-21 23:36:09,630 INFO L375 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-21 23:36:09,657 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-21 23:36:09,657 INFO L374 BuchiCegarLoop]: Interprodecural is true [2020-06-21 23:36:09,658 INFO L375 BuchiCegarLoop]: Hoare is true [2020-06-21 23:36:09,658 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-21 23:36:09,658 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-21 23:36:09,658 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-21 23:36:09,658 INFO L379 BuchiCegarLoop]: Difference is false [2020-06-21 23:36:09,658 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-21 23:36:09,658 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-06-21 23:36:09,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-06-21 23:36:09,678 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:36:09,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:36:09,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:36:09,685 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:36:09,685 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:36:09,685 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2020-06-21 23:36:09,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-06-21 23:36:09,686 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:36:09,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:36:09,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:36:09,687 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-06-21 23:36:09,687 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:36:09,692 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [52] ULTIMATE.startENTRY-->L12-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_10) (< 0 v_ULTIMATE.start_main_~x~0_14) (= 0 v_ULTIMATE.start_main_~c~0_8)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 3#L12-2true [2020-06-21 23:36:09,693 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true [48] L12-2-->L13: Formula: (> 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 6#L13true [40] L13-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~y~0_1) (< v_ULTIMATE.start_main_~y~0_1 v_ULTIMATE.start_main_~x~0_2)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 5#L13-2true [39] L13-2-->L12-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 3#L12-2true [2020-06-21 23:36:09,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:09,699 INFO L82 PathProgramCache]: Analyzing trace with hash 83, now seen corresponding path program 1 times [2020-06-21 23:36:09,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:09,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:09,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:09,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:09,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:09,772 INFO L82 PathProgramCache]: Analyzing trace with hash 77198, now seen corresponding path program 1 times [2020-06-21 23:36:09,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:09,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:09,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:09,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:09,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:09,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:09,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2520060, now seen corresponding path program 1 times [2020-06-21 23:36:09,788 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:09,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:09,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:09,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:09,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:36:09,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-21 23:36:09,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-21 23:36:09,881 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:36:09,883 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:36:09,883 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:36:09,883 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:36:09,883 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:36:09,883 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:09,884 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:36:09,884 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:36:09,884 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:36:09,884 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:36:09,884 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:36:09,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:09,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:09,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:09,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:10,009 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:36:10,010 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/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 [2020-06-21 23:36:10,016 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:10,016 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:10,050 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:10,050 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/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 [2020-06-21 23:36:10,056 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:10,057 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:10,084 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:10,084 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:10,088 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:10,088 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:10,121 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:36:10,121 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:10,157 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:10,157 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:10,185 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:10,185 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:10,226 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:36:10,226 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:10,415 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:36:10,418 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:36:10,418 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:36:10,418 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:36:10,418 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:36:10,419 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:36:10,419 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:36:10,419 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:36:10,419 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:36:10,419 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-06-21 23:36:10,419 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:36:10,419 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:36:10,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:10,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:10,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:10,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:10,498 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:36:10,504 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:36:10,506 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 [2020-06-21 23:36:10,507 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:36:10,508 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:36:10,508 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:36:10,508 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:36:10,512 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-21 23:36:10,513 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-21 23:36:10,519 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:36:10,520 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 [2020-06-21 23:36:10,520 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:36:10,521 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:36:10,521 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:36:10,521 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:36:10,523 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-06-21 23:36:10,523 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-06-21 23:36:10,532 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:36:10,533 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 [2020-06-21 23:36:10,533 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:36:10,533 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:36:10,534 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:36:10,534 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:36:10,534 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:36:10,535 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:36:10,535 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:36:10,539 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-06-21 23:36:10,540 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 [2020-06-21 23:36:10,541 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:36:10,541 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:36:10,541 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:36:10,541 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:36:10,541 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:36:10,542 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:36:10,542 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:36:10,549 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:36:10,558 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-06-21 23:36:10,558 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:36:10,560 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:36:10,560 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:36:10,561 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:36:10,561 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-06-21 23:36:10,562 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:36:10,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:10,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:36:10,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:36:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:10,608 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:36:10,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:36:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:36:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:10,674 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:36:10,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:36:10,676 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-06-21 23:36:10,681 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 3 loop predicates [2020-06-21 23:36:10,683 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-06-21 23:36:10,775 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 15 states and 26 transitions. Complement of second has 8 states. [2020-06-21 23:36:10,775 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 [2020-06-21 23:36:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-06-21 23:36:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2020-06-21 23:36:10,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 1 letters. Loop has 3 letters. [2020-06-21 23:36:10,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:36:10,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 4 letters. Loop has 3 letters. [2020-06-21 23:36:10,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:36:10,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 22 transitions. Stem has 1 letters. Loop has 6 letters. [2020-06-21 23:36:10,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:36:10,789 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 26 transitions. [2020-06-21 23:36:10,791 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:36:10,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 9 states and 14 transitions. [2020-06-21 23:36:10,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-06-21 23:36:10,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-06-21 23:36:10,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2020-06-21 23:36:10,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:36:10,799 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-06-21 23:36:10,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2020-06-21 23:36:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-06-21 23:36:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-06-21 23:36:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2020-06-21 23:36:10,829 INFO L729 BuchiCegarLoop]: Abstraction has 6 states and 10 transitions. [2020-06-21 23:36:10,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-21 23:36:10,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-21 23:36:10,832 INFO L87 Difference]: Start difference. First operand 6 states and 10 transitions. Second operand 3 states. [2020-06-21 23:36:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 23:36:10,847 INFO L93 Difference]: Finished difference Result 7 states and 9 transitions. [2020-06-21 23:36:10,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-21 23:36:10,849 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 9 transitions. [2020-06-21 23:36:10,850 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-06-21 23:36:10,850 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 9 transitions. [2020-06-21 23:36:10,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-06-21 23:36:10,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-06-21 23:36:10,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 9 transitions. [2020-06-21 23:36:10,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:36:10,851 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-06-21 23:36:10,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 9 transitions. [2020-06-21 23:36:10,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-06-21 23:36:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-06-21 23:36:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-06-21 23:36:10,853 INFO L729 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-06-21 23:36:10,853 INFO L609 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-06-21 23:36:10,853 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2020-06-21 23:36:10,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-06-21 23:36:10,853 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:36:10,853 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:36:10,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:36:10,854 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 23:36:10,854 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:36:10,854 INFO L794 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY [52] ULTIMATE.startENTRY-->L12-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_10) (< 0 v_ULTIMATE.start_main_~x~0_14) (= 0 v_ULTIMATE.start_main_~c~0_8)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 89#L12-2 [49] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 87#L13 [2020-06-21 23:36:10,855 INFO L796 eck$LassoCheckResult]: Loop: 87#L13 [45] L13-->L13-2: Formula: (and (>= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_9) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 90#L13-2 [39] L13-2-->L12-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 86#L12-2 [48] L12-2-->L13: Formula: (> 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 87#L13 [2020-06-21 23:36:10,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:10,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2622, now seen corresponding path program 1 times [2020-06-21 23:36:10,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:10,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:10,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:10,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:10,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:10,862 INFO L82 PathProgramCache]: Analyzing trace with hash 74293, now seen corresponding path program 1 times [2020-06-21 23:36:10,862 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:10,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:10,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:10,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:10,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:10,872 INFO L82 PathProgramCache]: Analyzing trace with hash 78156504, now seen corresponding path program 1 times [2020-06-21 23:36:10,872 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:10,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:10,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:10,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:10,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:36:10,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2020-06-21 23:36:10,895 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-21 23:36:10,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:10,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2020-06-21 23:36:10,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:36:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:36:10,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-06-21 23:36:10,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-06-21 23:36:10,973 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:36:10,974 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:36:10,974 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:36:10,974 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:36:10,974 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:36:10,974 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:10,974 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:36:10,974 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:36:10,975 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-06-21 23:36:10,975 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:36:10,975 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:36:10,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:10,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:10,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:10,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,066 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:36:11,066 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,070 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:11,070 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:11,098 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:11,098 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,103 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:11,103 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:11,132 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:11,132 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,139 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:11,139 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,171 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:36:11,171 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:11,205 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:11,206 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,233 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:11,234 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,267 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:36:11,267 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:11,293 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:11,293 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Honda state: {ULTIMATE.start_main_~y~0=-5, ULTIMATE.start_main_~x~0=-5} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 0, 0] Nus: [0, 0] [2020-06-21 23:36:11,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-21 23:36:11,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-21 23:36:11,319 INFO L87 Difference]: Start difference. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 4 states. [2020-06-21 23:36:11,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 23:36:11,340 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2020-06-21 23:36:11,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-21 23:36:11,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2020-06-21 23:36:11,343 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-06-21 23:36:11,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 11 transitions. [2020-06-21 23:36:11,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-06-21 23:36:11,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-06-21 23:36:11,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2020-06-21 23:36:11,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-06-21 23:36:11,344 INFO L706 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-06-21 23:36:11,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2020-06-21 23:36:11,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-06-21 23:36:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-06-21 23:36:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2020-06-21 23:36:11,346 INFO L729 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-06-21 23:36:11,347 INFO L609 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-06-21 23:36:11,347 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2020-06-21 23:36:11,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2020-06-21 23:36:11,347 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-06-21 23:36:11,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:36:11,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:36:11,348 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-06-21 23:36:11,348 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:36:11,348 INFO L794 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRY [52] ULTIMATE.startENTRY-->L12-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_10) (< 0 v_ULTIMATE.start_main_~x~0_14) (= 0 v_ULTIMATE.start_main_~c~0_8)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 125#L12-2 [49] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 123#L13 [2020-06-21 23:36:11,349 INFO L796 eck$LassoCheckResult]: Loop: 123#L13 [45] L13-->L13-2: Formula: (and (>= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_9) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 130#L13-2 [39] L13-2-->L12-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 122#L12-2 [49] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 123#L13 [2020-06-21 23:36:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:11,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2622, now seen corresponding path program 2 times [2020-06-21 23:36:11,349 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:11,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:11,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:11,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:11,355 INFO L82 PathProgramCache]: Analyzing trace with hash 74294, now seen corresponding path program 1 times [2020-06-21 23:36:11,355 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:11,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:11,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 23:36:11,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:11,363 INFO L82 PathProgramCache]: Analyzing trace with hash 78156505, now seen corresponding path program 1 times [2020-06-21 23:36:11,363 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:11,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:11,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:11,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,393 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:36:11,393 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:36:11,394 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:36:11,394 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:36:11,394 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:36:11,394 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,394 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:36:11,394 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:36:11,394 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:36:11,394 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:36:11,395 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:36:11,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,474 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:36:11,475 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,479 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:11,479 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:11,506 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:11,507 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_4=0} Honda state: {v_rep~unnamed0~0~false_4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,512 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:11,512 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,542 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:36:11,542 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:11,647 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-06-21 23:36:11,649 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:36:11,649 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:36:11,650 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:36:11,650 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:36:11,650 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2020-06-21 23:36:11,650 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-06-21 23:36:11,650 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:36:11,650 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:36:11,650 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-06-21 23:36:11,650 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:36:11,650 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:36:11,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,728 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:36:11,728 INFO L497 LassoAnalysis]: Using template 'affine'. [2020-06-21 23:36:11,729 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 [2020-06-21 23:36:11,729 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2020-06-21 23:36:11,730 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-06-21 23:36:11,730 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2020-06-21 23:36:11,730 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2020-06-21 23:36:11,730 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2020-06-21 23:36:11,731 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-06-21 23:36:11,731 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-06-21 23:36:11,735 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-06-21 23:36:11,739 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-06-21 23:36:11,739 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2020-06-21 23:36:11,739 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-06-21 23:36:11,740 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-06-21 23:36:11,740 INFO L518 LassoAnalysis]: Proved termination. [2020-06-21 23:36:11,740 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-06-21 23:36:11,740 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-06-21 23:36:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:11,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-06-21 23:36:11,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:36:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:11,764 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-06-21 23:36:11,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:36:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:36:11,773 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-06-21 23:36:11,773 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 2 loop predicates [2020-06-21 23:36:11,773 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-06-21 23:36:11,799 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 4 states. [2020-06-21 23:36:11,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-06-21 23:36:11,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-06-21 23:36:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-06-21 23:36:11,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2020-06-21 23:36:11,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:36:11,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2020-06-21 23:36:11,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:36:11,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2020-06-21 23:36:11,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-06-21 23:36:11,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2020-06-21 23:36:11,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:36:11,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 7 states and 7 transitions. [2020-06-21 23:36:11,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-06-21 23:36:11,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-06-21 23:36:11,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2020-06-21 23:36:11,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 23:36:11,806 INFO L706 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-06-21 23:36:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2020-06-21 23:36:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-06-21 23:36:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-06-21 23:36:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-06-21 23:36:11,807 INFO L729 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-06-21 23:36:11,807 INFO L609 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-06-21 23:36:11,807 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2020-06-21 23:36:11,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2020-06-21 23:36:11,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-06-21 23:36:11,808 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-06-21 23:36:11,808 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-06-21 23:36:11,808 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-06-21 23:36:11,808 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-06-21 23:36:11,808 INFO L794 eck$LassoCheckResult]: Stem: 184#ULTIMATE.startENTRY [52] ULTIMATE.startENTRY-->L12-2: Formula: (and (< 0 v_ULTIMATE.start_main_~y~0_10) (< 0 v_ULTIMATE.start_main_~x~0_14) (= 0 v_ULTIMATE.start_main_~c~0_8)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_10, ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_14} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~x~0] 182#L12-2 [49] L12-2-->L13: Formula: (< 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 183#L13 [40] L13-->L13-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_1 v_ULTIMATE.start_main_~y~0_1) (< v_ULTIMATE.start_main_~y~0_1 v_ULTIMATE.start_main_~x~0_2)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_2} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 185#L13-2 [2020-06-21 23:36:11,809 INFO L796 eck$LassoCheckResult]: Loop: 185#L13-2 [39] L13-2-->L12-2: Formula: (= v_ULTIMATE.start_main_~c~0_6 (+ v_ULTIMATE.start_main_~c~0_7 1)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_7} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0] 186#L12-2 [48] L12-2-->L13: Formula: (> 0 v_ULTIMATE.start_main_~x~0_13) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} OutVars{ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_13} AuxVars[] AssignedVars[] 187#L13 [45] L13-->L13-2: Formula: (and (>= v_ULTIMATE.start_main_~y~0_7 v_ULTIMATE.start_main_~x~0_9) (= v_ULTIMATE.start_main_~x~0_8 (+ v_ULTIMATE.start_main_~x~0_9 (- 1)))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 185#L13-2 [2020-06-21 23:36:11,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:11,809 INFO L82 PathProgramCache]: Analyzing trace with hash 81322, now seen corresponding path program 1 times [2020-06-21 23:36:11,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:11,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:11,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:11,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash 68803, now seen corresponding path program 2 times [2020-06-21 23:36:11,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:11,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:11,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:11,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-21 23:36:11,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-21 23:36:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1872264582, now seen corresponding path program 1 times [2020-06-21 23:36:11,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-21 23:36:11,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-21 23:36:11,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2020-06-21 23:36:11,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-21 23:36:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:36:11,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2020-06-21 23:36:11,842 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2020-06-21 23:36:11,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-21 23:36:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-21 23:36:11,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2020-06-21 23:36:11,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2020-06-21 23:36:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-21 23:36:11,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-06-21 23:36:11,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-06-21 23:36:11,922 INFO L216 LassoAnalysis]: Preferences: [2020-06-21 23:36:11,922 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2020-06-21 23:36:11,922 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-06-21 23:36:11,922 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2020-06-21 23:36:11,922 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2020-06-21 23:36:11,922 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,923 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2020-06-21 23:36:11,923 INFO L130 ssoRankerPreferences]: Path of dumped script: [2020-06-21 23:36:11,923 INFO L131 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-06-21 23:36:11,923 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2020-06-21 23:36:11,923 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2020-06-21 23:36:11,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-06-21 23:36:11,992 INFO L300 LassoAnalysis]: Preprocessing complete. [2020-06-21 23:36:11,992 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:11,996 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:11,996 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:12,029 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:36:12,030 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:12,062 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:12,062 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=-1}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [4, 3, 1] Nus: [0, 1] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:12,089 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:12,089 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:12,116 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:12,116 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_6=1} Honda state: {v_rep~unnamed0~0~true_6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:12,121 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:12,121 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:12,149 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-06-21 23:36:12,150 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:12,203 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:12,203 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Honda state: {ULTIMATE.start_main_~y~0=-1, ULTIMATE.start_main_~x~0=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_~x~0=-1}] Lambdas: [0, 12, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-21 23:36:12,230 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-06-21 23:36:12,230 INFO L163 nArgumentSynthesizer]: Using integer mode. [2020-06-21 23:36:12,256 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2020-06-21 23:36:12,256 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-06-21 23:36:12,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-21 23:36:12,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-06-21 23:36:12,258 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. cyclomatic complexity: 1 Second operand 4 states. [2020-06-21 23:36:12,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-21 23:36:12,268 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2020-06-21 23:36:12,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-21 23:36:12,270 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5 states and 4 transitions. [2020-06-21 23:36:12,270 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:36:12,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5 states to 0 states and 0 transitions. [2020-06-21 23:36:12,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-06-21 23:36:12,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-06-21 23:36:12,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-06-21 23:36:12,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-06-21 23:36:12,271 INFO L706 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:36:12,271 INFO L729 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:36:12,271 INFO L609 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-06-21 23:36:12,271 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2020-06-21 23:36:12,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-06-21 23:36:12,271 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-06-21 23:36:12,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-06-21 23:36:12,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.06 11:36:12 BasicIcfg [2020-06-21 23:36:12,277 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-21 23:36:12,278 INFO L168 Benchmark]: Toolchain (without parser) took 3418.35 ms. Allocated memory was 649.6 MB in the beginning and 742.9 MB in the end (delta: 93.3 MB). Free memory was 565.2 MB in the beginning and 656.3 MB in the end (delta: -91.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-21 23:36:12,279 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 586.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:36:12,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.11 ms. Allocated memory was 649.6 MB in the beginning and 659.0 MB in the end (delta: 9.4 MB). Free memory was 565.2 MB in the beginning and 626.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 29.9 MB. Max. memory is 50.3 GB. [2020-06-21 23:36:12,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.55 ms. Allocated memory is still 659.0 MB. Free memory was 626.7 MB in the beginning and 622.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 50.3 GB. [2020-06-21 23:36:12,281 INFO L168 Benchmark]: Boogie Preprocessor took 19.05 ms. Allocated memory is still 659.0 MB. Free memory is still 622.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-21 23:36:12,281 INFO L168 Benchmark]: RCFGBuilder took 198.76 ms. Allocated memory is still 659.0 MB. Free memory was 622.2 MB in the beginning and 608.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. [2020-06-21 23:36:12,282 INFO L168 Benchmark]: BlockEncodingV2 took 78.13 ms. Allocated memory is still 659.0 MB. Free memory was 608.0 MB in the beginning and 601.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. [2020-06-21 23:36:12,282 INFO L168 Benchmark]: TraceAbstraction took 152.80 ms. Allocated memory is still 659.0 MB. Free memory was 601.5 MB in the beginning and 592.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. [2020-06-21 23:36:12,283 INFO L168 Benchmark]: BuchiAutomizer took 2655.80 ms. Allocated memory was 659.0 MB in the beginning and 742.9 MB in the end (delta: 83.9 MB). Free memory was 592.1 MB in the beginning and 656.3 MB in the end (delta: -64.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 50.3 GB. [2020-06-21 23:36:12,287 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 12 edges - StatisticsResult: Encoded RCFG 4 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 586.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 275.11 ms. Allocated memory was 649.6 MB in the beginning and 659.0 MB in the end (delta: 9.4 MB). Free memory was 565.2 MB in the beginning and 626.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 29.9 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.55 ms. Allocated memory is still 659.0 MB. Free memory was 626.7 MB in the beginning and 622.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.05 ms. Allocated memory is still 659.0 MB. Free memory is still 622.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * RCFGBuilder took 198.76 ms. Allocated memory is still 659.0 MB. Free memory was 622.2 MB in the beginning and 608.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 78.13 ms. Allocated memory is still 659.0 MB. Free memory was 608.0 MB in the beginning and 601.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. * TraceAbstraction took 152.80 ms. Allocated memory is still 659.0 MB. Free memory was 601.5 MB in the beginning and 592.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2655.80 ms. Allocated memory was 659.0 MB in the beginning and 742.9 MB in the end (delta: 83.9 MB). Free memory was 592.1 MB in the beginning and 656.3 MB in the end (delta: -64.3 MB). Peak memory consumption was 19.6 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: 12]: 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 5 terminating modules (3 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function x + -1 * y and consists of 6 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 9 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 24 SDslu, 6 SDs, 0 SdLazy, 56 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc2 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf112 neg100 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 5 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !ENTRY org.eclipse.core.resources 2 10035 2020-06-21 23:36:12.513 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check