/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:35:37,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:35:37,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:35:37,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:35:37,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:35:37,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:35:37,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:35:37,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:35:37,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:35:37,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:35:37,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:35:37,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:35:37,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:35:37,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:35:37,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:35:37,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:35:37,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:35:37,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:35:37,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:35:37,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:35:37,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:35:37,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:35:37,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:35:37,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:35:37,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:35:37,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:35:37,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:35:37,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:35:37,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:35:37,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:35:37,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:35:37,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:35:37,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:35:37,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:35:37,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:35:37,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:35:37,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:35:37,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:35:37,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:35:37,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:35:37,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:35:37,168 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:35:37,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:35:37,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:35:37,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:35:37,184 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:35:37,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:35:37,185 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:35:37,185 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:35:37,185 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:35:37,185 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:35:37,186 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:35:37,186 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:35:37,186 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:35:37,186 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:35:37,186 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:35:37,186 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:35:37,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:35:37,187 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:35:37,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:35:37,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:35:37,187 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:35:37,188 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:35:37,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:35:37,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:35:37,188 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:35:37,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:35:37,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:35:37,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:35:37,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:35:37,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:35:37,357 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:35:37,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:35:37,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:35:37,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:35:37,375 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:35:37,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:35:37,434 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_wrrKf2/tmp/74b2c0b709ec4090b070563f1ad642ce/FLAGed9768975 [2020-07-01 11:35:37,768 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:35:37,769 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:35:37,775 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_wrrKf2/tmp/74b2c0b709ec4090b070563f1ad642ce/FLAGed9768975 [2020-07-01 11:35:38,183 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_wrrKf2/tmp/74b2c0b709ec4090b070563f1ad642ce [2020-07-01 11:35:38,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:35:38,195 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:35:38,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:35:38,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:35:38,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:35:38,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1070bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38, skipping insertion in model container [2020-07-01 11:35:38,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:35:38,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:35:38,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:35:38,466 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:35:38,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:35:38,498 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:35:38,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38 WrapperNode [2020-07-01 11:35:38,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:35:38,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:35:38,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:35:38,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:35:38,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:35:38,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:35:38,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:35:38,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:35:38,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:35:38,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:35:38,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:35:38,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:35:38,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (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 [2020-07-01 11:35:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:35:38,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:35:38,802 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:35:38,802 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-01 11:35:38,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:35:38 BoogieIcfgContainer [2020-07-01 11:35:38,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:35:38,806 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:35:38,806 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:35:38,808 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:35:38,809 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:35:38" (1/1) ... [2020-07-01 11:35:38,822 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 13 edges [2020-07-01 11:35:38,823 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:35:38,824 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:35:38,825 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:35:38,825 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:35:38,827 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:35:38,828 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:35:38,828 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:35:38,842 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:35:38,849 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 11:35:38,854 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 11:35:38,856 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:35:38,869 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 11:35:38,871 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 11:35:38,872 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:35:38,872 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:35:38,878 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:35:38,879 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:35:38,879 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:35:38,879 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:35:38,879 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:35:38,880 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:35:38,880 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 11:35:38,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:35:38 BasicIcfg [2020-07-01 11:35:38,881 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:35:38,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:35:38,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:35:38,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:35:38,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:35:38" (1/4) ... [2020-07-01 11:35:38,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6662a095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:35:38, skipping insertion in model container [2020-07-01 11:35:38,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (2/4) ... [2020-07-01 11:35:38,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6662a095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:35:38, skipping insertion in model container [2020-07-01 11:35:38,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:35:38" (3/4) ... [2020-07-01 11:35:38,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6662a095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:35:38, skipping insertion in model container [2020-07-01 11:35:38,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:35:38" (4/4) ... [2020-07-01 11:35:38,891 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:35:38,902 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:35:38,910 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:35:38,924 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:35:38,947 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:35:38,947 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:35:38,947 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:35:38,947 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:35:38,947 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:35:38,948 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:35:38,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:35:38,948 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:35:38,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:35:38,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:35:38,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:35:39,028 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:35:39,028 INFO L271 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: true [2020-07-01 11:35:39,029 INFO L271 CegarLoopResult]: At program point L22-2(lines 22 28) the Hoare annotation is: true [2020-07-01 11:35:39,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:35:39 BasicIcfg [2020-07-01 11:35:39,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:35:39,038 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:35:39,038 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:35:39,041 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:35:39,042 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:35:39,043 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:35:38" (1/5) ... [2020-07-01 11:35:39,043 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24f0a9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:35:39, skipping insertion in model container [2020-07-01 11:35:39,043 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:35:39,044 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:35:38" (2/5) ... [2020-07-01 11:35:39,044 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24f0a9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:35:39, skipping insertion in model container [2020-07-01 11:35:39,044 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:35:39,044 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:35:38" (3/5) ... [2020-07-01 11:35:39,045 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24f0a9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:35:39, skipping insertion in model container [2020-07-01 11:35:39,045 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:35:39,045 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:35:38" (4/5) ... [2020-07-01 11:35:39,045 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24f0a9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:35:39, skipping insertion in model container [2020-07-01 11:35:39,045 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:35:39,046 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:35:39" (5/5) ... [2020-07-01 11:35:39,047 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:35:39,078 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:35:39,079 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:35:39,079 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:35:39,079 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:35:39,079 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:35:39,079 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:35:39,079 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:35:39,079 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:35:39,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:35:39,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:35:39,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:35:39,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:35:39,105 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:35:39,105 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:35:39,105 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:35:39,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:35:39,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:35:39,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:35:39,106 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:35:39,106 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:35:39,106 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:35:39,111 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [56] ULTIMATE.startENTRY-->L22-2: Formula: (and (= 0 v_ULTIMATE.start_main_~i~0_15) (<= 1 v_ULTIMATE.start_main_~k~0_9)) InVars {} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_9, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_11, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_8, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0] 5#L22-2true [2020-07-01 11:35:39,112 INFO L796 eck$LassoCheckResult]: Loop: 5#L22-2true [49] L22-2-->L24-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_8 v_ULTIMATE.start_main_~n~0_7) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 4#L24-2true [54] L24-2-->L22-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_14 v_ULTIMATE.start_main_~j~0_10) (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 1))) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 5#L22-2true [2020-07-01 11:35:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:39,119 INFO L82 PathProgramCache]: Analyzing trace with hash 87, now seen corresponding path program 1 times [2020-07-01 11:35:39,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:35:39,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749432091] [2020-07-01 11:35:39,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:35:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:39,197 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:35:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:39,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2534, now seen corresponding path program 1 times [2020-07-01 11:35:39,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:35:39,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579724072] [2020-07-01 11:35:39,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:35:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:39,215 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:35:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:39,217 INFO L82 PathProgramCache]: Analyzing trace with hash 85180, now seen corresponding path program 1 times [2020-07-01 11:35:39,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:35:39,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19128908] [2020-07-01 11:35:39,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:35:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:35:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:35:39,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19128908] [2020-07-01 11:35:39,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:35:39,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 11:35:39,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487734164] [2020-07-01 11:35:39,326 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:35:39,327 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:35:39,327 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:35:39,327 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:35:39,327 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:35:39,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:35:39,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:35:39,328 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:35:39,328 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:35:39,328 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:35:39,328 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:35:39,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:39,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:39,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:39,457 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:35:39,457 INFO L404 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 [2020-07-01 11:35:39,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:39,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:39,479 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:35:39,480 INFO L440 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 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 [2020-07-01 11:35:39,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:39,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:39,520 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:35:39,520 INFO L440 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 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 [2020-07-01 11:35:39,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:39,556 INFO L160 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 [2020-07-01 11:35:39,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:35:39,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:39,724 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:35:39,727 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:35:39,744 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:35:39,744 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:35:39,744 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:35:39,744 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:35:39,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:39,744 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:35:39,744 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:35:39,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:35:39,745 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:35:39,745 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:35:39,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:39,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:39,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:39,830 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:35:39,836 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:35:39,841 INFO L120 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 [2020-07-01 11:35:39,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:39,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:39,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:39,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:39,851 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:35:39,851 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:35:39,858 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:35:39,891 INFO L120 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 [2020-07-01 11:35:39,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:39,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:39,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:39,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:39,898 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:35:39,898 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:35:39,904 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:39,937 INFO L120 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 [2020-07-01 11:35:39,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:39,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:35:39,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:39,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:39,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:39,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:35:39,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:35:39,947 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:35:39,960 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-07-01 11:35:39,960 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:35:39,970 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:35:39,970 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:35:39,970 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:35:39,971 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 11:35:40,005 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:35:40,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:35:40,051 INFO L264 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:35:40,052 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:35:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:35:40,063 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:35:40,064 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:35:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:35:40,104 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 11:35:40,109 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 [2020-07-01 11:35:40,111 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:35:40,159 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 10 states and 15 transitions. Complement of second has 7 states. [2020-07-01 11:35:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 2 accepting loop states [2020-07-01 11:35:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:35:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2020-07-01 11:35:40,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:35:40,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:35:40,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:35:40,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:35:40,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:35:40,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:35:40,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 15 transitions. [2020-07-01 11:35:40,174 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:35:40,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 15 transitions. [2020-07-01 11:35:40,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 11:35:40,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-01 11:35:40,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2020-07-01 11:35:40,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:35:40,181 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-07-01 11:35:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2020-07-01 11:35:40,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-01 11:35:40,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 11:35:40,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2020-07-01 11:35:40,210 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2020-07-01 11:35:40,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:35:40,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 11:35:40,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 11:35:40,214 INFO L87 Difference]: Start difference. First operand 9 states and 14 transitions. Second operand 4 states. [2020-07-01 11:35:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:35:40,240 INFO L93 Difference]: Finished difference Result 8 states and 11 transitions. [2020-07-01 11:35:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 11:35:40,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2020-07-01 11:35:40,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:35:40,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 5 states and 6 transitions. [2020-07-01 11:35:40,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 11:35:40,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:35:40,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2020-07-01 11:35:40,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:35:40,244 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2020-07-01 11:35:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2020-07-01 11:35:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 4. [2020-07-01 11:35:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:35:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2020-07-01 11:35:40,246 INFO L711 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2020-07-01 11:35:40,246 INFO L591 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2020-07-01 11:35:40,246 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:35:40,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 5 transitions. [2020-07-01 11:35:40,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 11:35:40,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:35:40,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:35:40,247 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:35:40,247 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:35:40,248 INFO L794 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY [56] ULTIMATE.startENTRY-->L22-2: Formula: (and (= 0 v_ULTIMATE.start_main_~i~0_15) (<= 1 v_ULTIMATE.start_main_~k~0_9)) InVars {} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_9, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_11, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_8, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0] 76#L22-2 [2020-07-01 11:35:40,248 INFO L796 eck$LassoCheckResult]: Loop: 76#L22-2 [49] L22-2-->L24-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_8 v_ULTIMATE.start_main_~n~0_7) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 77#L24-2 [41] L24-2-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~i~0_10) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~k~0_7 v_ULTIMATE.start_main_~j~0_9))) InVars {ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 78#L24-2 [54] L24-2-->L22-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_14 v_ULTIMATE.start_main_~j~0_10) (= v_ULTIMATE.start_main_~i~0_13 (+ v_ULTIMATE.start_main_~i~0_14 1))) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_14} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_10, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 76#L22-2 [2020-07-01 11:35:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:40,248 INFO L82 PathProgramCache]: Analyzing trace with hash 87, now seen corresponding path program 2 times [2020-07-01 11:35:40,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:35:40,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696483420] [2020-07-01 11:35:40,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:35:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:40,255 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:35:40,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:40,256 INFO L82 PathProgramCache]: Analyzing trace with hash 78205, now seen corresponding path program 1 times [2020-07-01 11:35:40,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:35:40,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993173586] [2020-07-01 11:35:40,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:35:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:40,269 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:35:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:40,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2640231, now seen corresponding path program 1 times [2020-07-01 11:35:40,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:35:40,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217571034] [2020-07-01 11:35:40,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:35:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:40,283 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:35:40,320 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:35:40,321 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:35:40,321 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:35:40,321 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:35:40,321 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:35:40,321 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:35:40,321 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:35:40,322 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:35:40,322 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:35:40,322 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:35:40,322 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:35:40,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:40,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:40,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:40,418 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:35:40,418 INFO L404 LassoAnalysis]: Checking for nontermination... 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 [2020-07-01 11:35:40,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:40,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:40,430 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:35:40,430 INFO L440 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 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 [2020-07-01 11:35:40,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:40,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:40,470 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:35:40,470 INFO L440 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 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 [2020-07-01 11:35:40,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:40,506 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 [2020-07-01 11:35:40,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:35:40,550 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:41,096 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:35:41,100 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:35:41,100 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:35:41,100 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:35:41,100 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:35:41,100 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:35:41,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:41,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:35:41,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:35:41,101 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:35:41,101 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:35:41,101 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:35:41,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,188 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:35:41,188 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:35:41,194 INFO L120 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 [2020-07-01 11:35:41,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:41,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:41,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:41,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:41,199 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:35:41,200 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:35:41,204 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:35:41,238 INFO L120 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 [2020-07-01 11:35:41,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:41,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:41,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:41,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:41,244 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:35:41,244 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:35:41,250 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:35:41,285 INFO L120 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 [2020-07-01 11:35:41,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:41,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:35:41,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:41,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:41,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:41,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:35:41,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:35:41,293 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:35:41,300 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:35:41,300 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:35:41,304 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:35:41,305 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:35:41,305 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:35:41,305 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 11:35:41,335 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:35:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:35:41,353 INFO L264 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:35:41,354 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:35:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:35:41,358 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:35:41,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:35:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-01 11:35:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:35:41,388 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:35:41,389 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:35:41,415 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:35:41,416 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 [2020-07-01 11:35:41,416 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states and 5 transitions. cyclomatic complexity: 2 Second operand 3 states. [2020-07-01 11:35:41,429 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states and 5 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 7 states and 10 transitions. Complement of second has 4 states. [2020-07-01 11:35:41,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:35:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:35:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-07-01 11:35:41,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 11:35:41,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:35:41,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 11:35:41,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:35:41,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 11:35:41,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:35:41,433 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2020-07-01 11:35:41,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:35:41,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2020-07-01 11:35:41,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-07-01 11:35:41,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 11:35:41,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-07-01 11:35:41,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:35:41,435 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-07-01 11:35:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-07-01 11:35:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-07-01 11:35:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 11:35:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-07-01 11:35:41,437 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-07-01 11:35:41,437 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-07-01 11:35:41,437 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:35:41,437 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-07-01 11:35:41,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:35:41,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:35:41,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:35:41,438 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:35:41,438 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:35:41,438 INFO L794 eck$LassoCheckResult]: Stem: 127#ULTIMATE.startENTRY [56] ULTIMATE.startENTRY-->L22-2: Formula: (and (= 0 v_ULTIMATE.start_main_~i~0_15) (<= 1 v_ULTIMATE.start_main_~k~0_9)) InVars {} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_9, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_11, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_#t~nondet3=|v_ULTIMATE.start_main_#t~nondet3_6|, ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_8, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_15} AuxVars[] AssignedVars[ULTIMATE.start_main_~k~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_#t~nondet3, ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0] 128#L22-2 [49] L22-2-->L24-2: Formula: (and (< v_ULTIMATE.start_main_~i~0_8 v_ULTIMATE.start_main_~n~0_7) (= v_ULTIMATE.start_main_~j~0_6 0)) InVars {ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~n~0=v_ULTIMATE.start_main_~n~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 129#L24-2 [2020-07-01 11:35:41,438 INFO L796 eck$LassoCheckResult]: Loop: 129#L24-2 [41] L24-2-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~j~0_9 v_ULTIMATE.start_main_~i~0_10) (= v_ULTIMATE.start_main_~j~0_8 (+ v_ULTIMATE.start_main_~k~0_7 v_ULTIMATE.start_main_~j~0_9))) InVars {ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_9} OutVars{ULTIMATE.start_main_~k~0=v_ULTIMATE.start_main_~k~0_7, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 129#L24-2 [2020-07-01 11:35:41,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:41,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2746, now seen corresponding path program 1 times [2020-07-01 11:35:41,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:35:41,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838838509] [2020-07-01 11:35:41,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:35:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:41,447 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:35:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:41,448 INFO L82 PathProgramCache]: Analyzing trace with hash 72, now seen corresponding path program 1 times [2020-07-01 11:35:41,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:35:41,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499340577] [2020-07-01 11:35:41,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:35:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:41,453 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:35:41,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:41,454 INFO L82 PathProgramCache]: Analyzing trace with hash 85167, now seen corresponding path program 1 times [2020-07-01 11:35:41,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:35:41,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390724484] [2020-07-01 11:35:41,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:35:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:35:41,464 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:35:41,492 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:35:41,492 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:35:41,492 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:35:41,492 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:35:41,492 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:35:41,492 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:35:41,492 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:35:41,493 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:35:41,493 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-07-01 11:35:41,493 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:35:41,493 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:35:41,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:41,628 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:35:41,628 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:35:41,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:41,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:41,645 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:35:41,645 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-07-01 11:35:41,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:41,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:41,683 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:35:41,683 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-07-01 11:35:41,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:41,717 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:41,720 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:35:41,721 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 [2020-07-01 11:35:41,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:41,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:41,759 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:35:41,759 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} 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 [2020-07-01 11:35:41,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:35:41,792 INFO L160 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 [2020-07-01 11:35:41,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:35:41,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:35:42,565 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:35:42,568 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:35:42,568 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:35:42,568 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:35:42,568 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:35:42,569 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:35:42,569 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:42,569 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:35:42,569 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:35:42,569 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Lasso [2020-07-01 11:35:42,569 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:35:42,569 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:35:42,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:42,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:42,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:42,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:42,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:42,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:42,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:42,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:35:42,662 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:35:42,662 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -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:1024 -smt2 -in -t:12000 [2020-07-01 11:35:42,666 INFO L120 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 [2020-07-01 11:35:42,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:42,668 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:35:42,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:42,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:42,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:42,669 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:35:42,669 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:35:42,671 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:42,703 INFO L120 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 [2020-07-01 11:35:42,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:42,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:35:42,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:42,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:42,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:42,706 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:35:42,707 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:35:42,709 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:42,741 INFO L120 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 [2020-07-01 11:35:42,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:42,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:35:42,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:42,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:42,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:42,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:35:42,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:35:42,746 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:42,778 INFO L120 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 [2020-07-01 11:35:42,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:42,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:35:42,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:42,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:42,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:42,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:35:42,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:35:42,783 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:42,816 INFO L120 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 [2020-07-01 11:35:42,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:42,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:35:42,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:42,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:42,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:42,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:35:42,819 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:35:42,821 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:42,853 INFO L120 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 [2020-07-01 11:35:42,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:42,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:42,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:42,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:42,858 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:35:42,858 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:35:42,862 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:42,895 INFO L120 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 [2020-07-01 11:35:42,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:35:42,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:35:42,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:35:42,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:35:42,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:35:42,902 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:35:42,910 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:35:42,922 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-07-01 11:35:42,922 INFO L444 ModelExtractionUtils]: 5 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:35:42,929 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:35:42,933 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2020-07-01 11:35:42,933 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:35:42,933 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 + 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 1 >= 0, 1*ULTIMATE.start_main_~n~0 - 1 >= 0] [2020-07-01 11:35:42,968 INFO L297 tatePredicateManager]: 0 out of 2 supporting invariants were superfluous and have been removed [2020-07-01 11:35:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:35:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:35:43,003 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:35:43,003 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:35:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:35:43,019 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:35:43,019 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:35:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:35:43,057 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:35:43,057 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2020-07-01 11:35:43,058 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-07-01 11:35:43,115 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 7 states. [2020-07-01 11:35:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:35:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:35:43,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-07-01 11:35:43,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 11:35:43,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:35:43,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 11:35:43,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:35:43,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 11:35:43,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:35:43,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2020-07-01 11:35:43,119 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:35:43,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2020-07-01 11:35:43,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:35:43,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:35:43,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:35:43,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:35:43,120 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:35:43,120 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:35:43,120 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:35:43,120 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:35:43,120 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:35:43,121 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:35:43,121 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:35:43,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:35:43 BasicIcfg [2020-07-01 11:35:43,127 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:35:43,130 INFO L168 Benchmark]: Toolchain (without parser) took 4933.12 ms. Allocated memory was 649.6 MB in the beginning and 753.4 MB in the end (delta: 103.8 MB). Free memory was 561.3 MB in the beginning and 593.8 MB in the end (delta: -32.5 MB). Peak memory consumption was 71.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:35:43,130 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.1 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:35:43,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.08 ms. Allocated memory was 649.6 MB in the beginning and 688.9 MB in the end (delta: 39.3 MB). Free memory was 561.3 MB in the beginning and 651.7 MB in the end (delta: -90.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:35:43,131 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.96 ms. Allocated memory is still 688.9 MB. Free memory was 651.7 MB in the beginning and 650.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:35:43,132 INFO L168 Benchmark]: Boogie Preprocessor took 20.56 ms. Allocated memory is still 688.9 MB. Free memory was 650.6 MB in the beginning and 649.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:35:43,132 INFO L168 Benchmark]: RCFGBuilder took 250.43 ms. Allocated memory is still 688.9 MB. Free memory was 649.5 MB in the beginning and 634.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:35:43,133 INFO L168 Benchmark]: BlockEncodingV2 took 74.75 ms. Allocated memory is still 688.9 MB. Free memory was 634.5 MB in the beginning and 629.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:35:43,133 INFO L168 Benchmark]: TraceAbstraction took 155.44 ms. Allocated memory is still 688.9 MB. Free memory was 628.0 MB in the beginning and 619.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:35:43,134 INFO L168 Benchmark]: BuchiAutomizer took 4088.64 ms. Allocated memory was 688.9 MB in the beginning and 753.4 MB in the end (delta: 64.5 MB). Free memory was 619.4 MB in the beginning and 593.8 MB in the end (delta: 25.6 MB). Peak memory consumption was 90.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:35:43,137 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 13 edges - StatisticsResult: Encoded RCFG 3 locations, 4 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 583.1 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 302.08 ms. Allocated memory was 649.6 MB in the beginning and 688.9 MB in the end (delta: 39.3 MB). Free memory was 561.3 MB in the beginning and 651.7 MB in the end (delta: -90.4 MB). Peak memory consumption was 29.0 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.96 ms. Allocated memory is still 688.9 MB. Free memory was 651.7 MB in the beginning and 650.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.56 ms. Allocated memory is still 688.9 MB. Free memory was 650.6 MB in the beginning and 649.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 250.43 ms. Allocated memory is still 688.9 MB. Free memory was 649.5 MB in the beginning and 634.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 74.75 ms. Allocated memory is still 688.9 MB. Free memory was 634.5 MB in the beginning and 629.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 155.44 ms. Allocated memory is still 688.9 MB. Free memory was 628.0 MB in the beginning and 619.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4088.64 ms. Allocated memory was 688.9 MB in the beginning and 753.4 MB in the end (delta: 64.5 MB). Free memory was 619.4 MB in the beginning and 593.8 MB in the end (delta: 25.6 MB). Peak memory consumption was 90.1 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function -1 * i and consists of 5 locations. One nondeterministic module has affine ranking function n + -1 * i and consists of 3 locations. One nondeterministic module has affine ranking function n + 2 * i + -2 * j and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 3.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 10 SDtfs, 28 SDslu, 0 SDs, 0 SdLazy, 38 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf92 smp100 dnf100 smp100 tf105 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:35:34.947 ----------------------------------------------- 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/BenchExec_run_wrrKf2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:35:43.571 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check