/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:10:21,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:10:21,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:10:21,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:10:21,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:10:21,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:10:21,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:10:21,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:10:21,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:10:21,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:10:21,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:10:21,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:10:21,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:10:21,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:10:21,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:10:21,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:10:21,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:10:21,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:10:21,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:10:21,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:10:21,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:10:21,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:10:21,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:10:21,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:10:21,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:10:21,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:10:21,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:10:21,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:10:21,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:10:21,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:10:21,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:10:21,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:10:21,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:10:21,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:10:21,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:10:21,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:10:21,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:10:21,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:10:21,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:10:21,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:10:21,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:10:21,486 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 11:10:21,501 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:10:21,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:10:21,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:10:21,502 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:10:21,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:10:21,503 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:10:21,503 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:10:21,503 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:10:21,503 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:10:21,503 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:10:21,504 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:10:21,504 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:10:21,504 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:10:21,504 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:10:21,504 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:21,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:10:21,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:10:21,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:10:21,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:10:21,505 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:10:21,505 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:10:21,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:10:21,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:10:21,506 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:10:21,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:10:21,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:10:21,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:10:21,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:10:21,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:10:21,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:10:21,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:10:21,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:10:21,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:10:21,695 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:10:21,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:10:21,779 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_a5RSEK/tmp/5836204d14dd4c8fab3bb5878d85481f/FLAG8ae3946b0 [2020-07-01 11:10:22,122 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:10:22,123 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 11:10:22,130 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_a5RSEK/tmp/5836204d14dd4c8fab3bb5878d85481f/FLAG8ae3946b0 [2020-07-01 11:10:22,527 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_a5RSEK/tmp/5836204d14dd4c8fab3bb5878d85481f [2020-07-01 11:10:22,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:10:22,540 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:10:22,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:10:22,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:10:22,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:10:22,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201759a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22, skipping insertion in model container [2020-07-01 11:10:22,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:10:22,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:10:22,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:10:22,805 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:10:22,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:10:22,836 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:10:22,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22 WrapperNode [2020-07-01 11:10:22,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:10:22,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:10:22,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:10:22,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:10:22,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:10:22,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:10:22,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:10:22,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:10:22,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... [2020-07-01 11:10:22,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:10:22,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:10:22,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:10:22,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:10:22,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:10:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:10:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:10:23,124 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:10:23,124 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:10:23,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:10:23 BoogieIcfgContainer [2020-07-01 11:10:23,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:10:23,128 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:10:23,128 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:10:23,131 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:10:23,131 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:10:23" (1/1) ... [2020-07-01 11:10:23,143 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 11:10:23,145 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:10:23,146 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:10:23,146 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:10:23,147 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:10:23,148 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:10:23,149 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:10:23,149 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:10:23,165 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:10:23,181 INFO L200 BlockEncoder]: SBE split 3 edges [2020-07-01 11:10:23,185 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:10:23,186 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:10:23,197 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 11:10:23,199 INFO L70 RemoveSinkStates]: Removed 5 edges and 2 locations by removing sink states [2020-07-01 11:10:23,200 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:10:23,200 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:10:23,206 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:10:23,206 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:10:23,207 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:10:23,207 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:10:23,207 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:10:23,207 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:10:23,208 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 7 edges [2020-07-01 11:10:23,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:10:23 BasicIcfg [2020-07-01 11:10:23,208 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:10:23,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:10:23,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:10:23,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:10:23,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:10:22" (1/4) ... [2020-07-01 11:10:23,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a73c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:10:23, skipping insertion in model container [2020-07-01 11:10:23,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (2/4) ... [2020-07-01 11:10:23,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a73c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:10:23, skipping insertion in model container [2020-07-01 11:10:23,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:10:23" (3/4) ... [2020-07-01 11:10:23,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a73c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:10:23, skipping insertion in model container [2020-07-01 11:10:23,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:10:23" (4/4) ... [2020-07-01 11:10:23,217 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:10:23,227 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:10:23,234 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:10:23,247 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:10:23,270 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:10:23,270 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:10:23,270 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:10:23,270 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:10:23,271 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:10:23,271 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:10:23,271 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:10:23,271 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:10:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:10:23,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:10:23,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:10:23,346 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:10:23,346 INFO L268 CegarLoopResult]: For program point L24(lines 24 28) no Hoare annotation was computed. [2020-07-01 11:10:23,346 INFO L271 CegarLoopResult]: At program point L24-2(lines 23 29) the Hoare annotation is: true [2020-07-01 11:10:23,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:10:23 BasicIcfg [2020-07-01 11:10:23,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:10:23,356 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:10:23,356 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:10:23,359 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:10:23,360 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:10:23,360 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:10:22" (1/5) ... [2020-07-01 11:10:23,361 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b77290b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:10:23, skipping insertion in model container [2020-07-01 11:10:23,361 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:10:23,361 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:10:22" (2/5) ... [2020-07-01 11:10:23,361 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b77290b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:10:23, skipping insertion in model container [2020-07-01 11:10:23,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:10:23,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:10:23" (3/5) ... [2020-07-01 11:10:23,362 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b77290b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:10:23, skipping insertion in model container [2020-07-01 11:10:23,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:10:23,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:10:23" (4/5) ... [2020-07-01 11:10:23,363 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b77290b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:10:23, skipping insertion in model container [2020-07-01 11:10:23,363 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:10:23,363 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:10:23" (5/5) ... [2020-07-01 11:10:23,364 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:10:23,391 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:10:23,392 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:10:23,392 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:10:23,392 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:10:23,392 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:10:23,392 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:10:23,392 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:10:23,393 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:10:23,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:10:23,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:10:23,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:10:23,413 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:10:23,420 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:10:23,421 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:10:23,421 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:10:23,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:10:23,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:10:23,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:10:23,422 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:10:23,422 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:10:23,422 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:10:23,427 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [54] ULTIMATE.startENTRY-->L24-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_10) (< v_ULTIMATE.start_main_~id~0_10 v_ULTIMATE.start_main_~maxId~0_10) (= (+ v_ULTIMATE.start_main_~id~0_10 1) v_ULTIMATE.start_main_~tmp~0_11)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_10, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_11, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 4#L24-2true [2020-07-01 11:10:23,428 INFO L796 eck$LassoCheckResult]: Loop: 4#L24-2true [48] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 5#L24true [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 4#L24-2true [2020-07-01 11:10:23,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:23,437 INFO L82 PathProgramCache]: Analyzing trace with hash 85, now seen corresponding path program 1 times [2020-07-01 11:10:23,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:23,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157898928] [2020-07-01 11:10:23,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:23,522 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:23,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:23,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2486, now seen corresponding path program 1 times [2020-07-01 11:10:23,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:23,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761076653] [2020-07-01 11:10:23,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:23,536 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:23,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:23,538 INFO L82 PathProgramCache]: Analyzing trace with hash 83210, now seen corresponding path program 1 times [2020-07-01 11:10:23,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:23,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053682433] [2020-07-01 11:10:23,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:23,555 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:23,601 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:10:23,602 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:10:23,602 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:10:23,602 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:10:23,603 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:10:23,603 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:23,603 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:10:23,603 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:10:23,603 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:10:23,603 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:10:23,604 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:10:23,623 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 11:10:23,634 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 11:10:23,639 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 11:10:23,656 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 11:10:23,737 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:10:23,738 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:23,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:23,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:23,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:23,754 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/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:23,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:23,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:23,794 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:23,794 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/sandbox/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 11:10:23,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:23,827 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 11:10:23,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:10:23,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:24,100 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:10:24,103 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:10:24,103 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:10:24,103 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:10:24,103 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:10:24,104 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:10:24,104 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:24,104 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:10:24,104 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:10:24,104 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:10:24,104 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:10:24,104 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:10:24,106 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 11:10:24,111 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 11:10:24,114 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 11:10:24,125 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 11:10:24,187 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:10:24,193 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/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 11:10:24,197 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 11:10:24,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:24,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:24,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:24,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:24,207 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:10:24,208 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:10:24,214 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/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 11:10:24,246 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 11:10:24,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:24,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:24,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:24,248 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:24,252 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:10:24,252 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:10:24,258 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/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 11:10:24,290 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 11:10:24,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:24,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:10:24,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:24,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:24,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:24,295 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:10:24,295 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:10:24,298 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:10:24,305 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:10:24,305 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/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 11:10:24,310 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:10:24,310 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:10:24,311 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:10:24,311 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_~tmp~0) = 2*ULTIMATE.start_main_~maxId~0 - 2*ULTIMATE.start_main_~tmp~0 + 1 Supporting invariants [] [2020-07-01 11:10:24,345 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:10:24,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:24,395 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:10:24,396 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:24,408 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:10:24,408 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:24,410 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 11:10:24,423 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:10:24,428 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 1 loop predicates [2020-07-01 11:10:24,429 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:10:24,475 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 25 transitions. Complement of second has 4 states. [2020-07-01 11:10:24,475 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 11:10:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:10:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-07-01 11:10:24,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:10:24,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:24,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:10:24,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:24,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:10:24,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:24,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 25 transitions. [2020-07-01 11:10:24,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:10:24,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 25 transitions. [2020-07-01 11:10:24,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:10:24,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:10:24,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 25 transitions. [2020-07-01 11:10:24,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:10:24,495 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 25 transitions. [2020-07-01 11:10:24,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 25 transitions. [2020-07-01 11:10:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-01 11:10:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 11:10:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 25 transitions. [2020-07-01 11:10:24,525 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 25 transitions. [2020-07-01 11:10:24,525 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 25 transitions. [2020-07-01 11:10:24,525 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:10:24,525 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 25 transitions. [2020-07-01 11:10:24,526 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:10:24,526 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:10:24,526 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:10:24,527 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:10:24,527 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:10:24,527 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L24-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_10) (< v_ULTIMATE.start_main_~id~0_10 v_ULTIMATE.start_main_~maxId~0_10) (= (+ v_ULTIMATE.start_main_~id~0_10 1) v_ULTIMATE.start_main_~tmp~0_11)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_10, 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_~tmp~0=v_ULTIMATE.start_main_~tmp~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_~id~0=v_ULTIMATE.start_main_~id~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 42#L24-2 [51] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 47#L24 [43] L24-->L24-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_7 v_ULTIMATE.start_main_~maxId~0_7) (= v_ULTIMATE.start_main_~tmp~0_6 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_7} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 43#L24-2 [2020-07-01 11:10:24,528 INFO L796 eck$LassoCheckResult]: Loop: 43#L24-2 [48] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 44#L24 [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 43#L24-2 [2020-07-01 11:10:24,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:24,528 INFO L82 PathProgramCache]: Analyzing trace with hash 83309, now seen corresponding path program 1 times [2020-07-01 11:10:24,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:24,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41982797] [2020-07-01 11:10:24,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:24,565 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 11:10:24,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41982797] [2020-07-01 11:10:24,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:10:24,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 11:10:24,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435890367] [2020-07-01 11:10:24,569 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 11:10:24,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:24,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2486, now seen corresponding path program 2 times [2020-07-01 11:10:24,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:24,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849029877] [2020-07-01 11:10:24,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:24,579 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:24,607 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:10:24,607 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:10:24,607 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:10:24,607 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:10:24,607 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:10:24,607 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:24,608 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:10:24,608 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:10:24,608 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:10:24,608 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:10:24,608 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:10:24,610 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 11:10:24,614 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 11:10:24,622 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 11:10:24,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:10:24,716 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:10:24,716 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 11:10:24,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:24,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:24,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:24,732 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/sandbox/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 11:10:24,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:24,766 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 11:10:24,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:10:24,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:25,025 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:10:25,028 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:10:25,028 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:10:25,028 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:10:25,028 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:10:25,028 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:10:25,029 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:25,029 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:10:25,029 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:10:25,029 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:10:25,029 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:10:25,029 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:10:25,031 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 11:10:25,041 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 11:10:25,049 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 11:10:25,052 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 11:10:25,101 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:10:25,101 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:25,104 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 11:10:25,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:25,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:10:25,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:25,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:25,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:25,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:10:25,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:10:25,112 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:10:25,117 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:10:25,117 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/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 11:10:25,121 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:10:25,121 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:10:25,121 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:10:25,121 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_~tmp~0) = 2*ULTIMATE.start_main_~maxId~0 - 2*ULTIMATE.start_main_~tmp~0 + 1 Supporting invariants [] [2020-07-01 11:10:25,152 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:10:25,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:25,175 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:10:25,175 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:25,181 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:10:25,182 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:25,182 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 11:10:25,183 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:10:25,183 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 1 loop predicates [2020-07-01 11:10:25,184 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 25 transitions. cyclomatic complexity: 20 Second operand 3 states. [2020-07-01 11:10:25,212 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 25 transitions. cyclomatic complexity: 20. Second operand 3 states. Result 9 states and 37 transitions. Complement of second has 4 states. [2020-07-01 11:10:25,213 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 11:10:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:10:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-07-01 11:10:25,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:10:25,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:25,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 11:10:25,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:25,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 4 letters. [2020-07-01 11:10:25,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:25,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 37 transitions. [2020-07-01 11:10:25,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:10:25,218 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 37 transitions. [2020-07-01 11:10:25,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:10:25,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:10:25,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 37 transitions. [2020-07-01 11:10:25,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:10:25,219 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 37 transitions. [2020-07-01 11:10:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 37 transitions. [2020-07-01 11:10:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 5. [2020-07-01 11:10:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 11:10:25,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2020-07-01 11:10:25,221 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 19 transitions. [2020-07-01 11:10:25,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:10:25,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 11:10:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 11:10:25,225 INFO L87 Difference]: Start difference. First operand 5 states and 19 transitions. Second operand 3 states. [2020-07-01 11:10:25,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:10:25,250 INFO L93 Difference]: Finished difference Result 9 states and 29 transitions. [2020-07-01 11:10:25,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:10:25,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 29 transitions. [2020-07-01 11:10:25,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-07-01 11:10:25,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 29 transitions. [2020-07-01 11:10:25,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 11:10:25,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:10:25,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 29 transitions. [2020-07-01 11:10:25,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:10:25,254 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 29 transitions. [2020-07-01 11:10:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 29 transitions. [2020-07-01 11:10:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-07-01 11:10:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 11:10:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 28 transitions. [2020-07-01 11:10:25,256 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 28 transitions. [2020-07-01 11:10:25,256 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 28 transitions. [2020-07-01 11:10:25,256 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:10:25,256 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 28 transitions. [2020-07-01 11:10:25,257 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 11:10:25,257 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:10:25,257 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:10:25,257 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:10:25,257 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:10:25,258 INFO L794 eck$LassoCheckResult]: Stem: 104#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L24-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_10) (< v_ULTIMATE.start_main_~id~0_10 v_ULTIMATE.start_main_~maxId~0_10) (= (+ v_ULTIMATE.start_main_~id~0_10 1) v_ULTIMATE.start_main_~tmp~0_11)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_10, 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_~tmp~0=v_ULTIMATE.start_main_~tmp~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_~id~0=v_ULTIMATE.start_main_~id~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 105#L24-2 [50] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 107#L24 [2020-07-01 11:10:25,258 INFO L796 eck$LassoCheckResult]: Loop: 107#L24 [43] L24-->L24-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_7 v_ULTIMATE.start_main_~maxId~0_7) (= v_ULTIMATE.start_main_~tmp~0_6 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_7} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 109#L24-2 [48] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 107#L24 [2020-07-01 11:10:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,258 INFO L82 PathProgramCache]: Analyzing trace with hash 2685, now seen corresponding path program 1 times [2020-07-01 11:10:25,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:25,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553887165] [2020-07-01 11:10:25,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,268 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2342, now seen corresponding path program 1 times [2020-07-01 11:10:25,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:25,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012883675] [2020-07-01 11:10:25,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,277 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,277 INFO L82 PathProgramCache]: Analyzing trace with hash 2581666, now seen corresponding path program 1 times [2020-07-01 11:10:25,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:25,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770344683] [2020-07-01 11:10:25,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:10:25,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770344683] [2020-07-01 11:10:25,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:10:25,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 11:10:25,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139977750] [2020-07-01 11:10:25,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:10:25,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 11:10:25,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 11:10:25,318 INFO L87 Difference]: Start difference. First operand 8 states and 28 transitions. cyclomatic complexity: 21 Second operand 3 states. [2020-07-01 11:10:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:10:25,341 INFO L93 Difference]: Finished difference Result 10 states and 29 transitions. [2020-07-01 11:10:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:10:25,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 29 transitions. [2020-07-01 11:10:25,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 11:10:25,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 27 transitions. [2020-07-01 11:10:25,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:10:25,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 11:10:25,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 27 transitions. [2020-07-01 11:10:25,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:10:25,345 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 27 transitions. [2020-07-01 11:10:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 27 transitions. [2020-07-01 11:10:25,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-07-01 11:10:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 11:10:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 26 transitions. [2020-07-01 11:10:25,347 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 26 transitions. [2020-07-01 11:10:25,347 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 26 transitions. [2020-07-01 11:10:25,347 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:10:25,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 26 transitions. [2020-07-01 11:10:25,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 11:10:25,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:10:25,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:10:25,348 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-07-01 11:10:25,348 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:10:25,349 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L24-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_10) (< v_ULTIMATE.start_main_~id~0_10 v_ULTIMATE.start_main_~maxId~0_10) (= (+ v_ULTIMATE.start_main_~id~0_10 1) v_ULTIMATE.start_main_~tmp~0_11)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_10, 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_~tmp~0=v_ULTIMATE.start_main_~tmp~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_~id~0=v_ULTIMATE.start_main_~id~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 131#L24-2 [50] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 132#L24 [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 133#L24-2 [50] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 134#L24 [2020-07-01 11:10:25,349 INFO L796 eck$LassoCheckResult]: Loop: 134#L24 [43] L24-->L24-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_7 v_ULTIMATE.start_main_~maxId~0_7) (= v_ULTIMATE.start_main_~tmp~0_6 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_7} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 135#L24-2 [48] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 134#L24 [2020-07-01 11:10:25,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2581482, now seen corresponding path program 1 times [2020-07-01 11:10:25,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:25,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614411009] [2020-07-01 11:10:25,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,361 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:25,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2342, now seen corresponding path program 2 times [2020-07-01 11:10:25,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:25,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656597232] [2020-07-01 11:10:25,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,369 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1814161713, now seen corresponding path program 1 times [2020-07-01 11:10:25,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:25,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249101775] [2020-07-01 11:10:25,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 11:10:25,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249101775] [2020-07-01 11:10:25,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648163495] [2020-07-01 11:10:25,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:10:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:25,429 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 11:10:25,430 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 11:10:25,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-01 11:10:25,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2020-07-01 11:10:25,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001891215] [2020-07-01 11:10:25,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:10:25,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 11:10:25,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-01 11:10:25,463 INFO L87 Difference]: Start difference. First operand 8 states and 26 transitions. cyclomatic complexity: 19 Second operand 4 states. [2020-07-01 11:10:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:10:25,494 INFO L93 Difference]: Finished difference Result 10 states and 24 transitions. [2020-07-01 11:10:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 11:10:25,496 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 24 transitions. [2020-07-01 11:10:25,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-07-01 11:10:25,498 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 24 transitions. [2020-07-01 11:10:25,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 11:10:25,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:10:25,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 24 transitions. [2020-07-01 11:10:25,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:10:25,498 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 24 transitions. [2020-07-01 11:10:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 24 transitions. [2020-07-01 11:10:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2020-07-01 11:10:25,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 11:10:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 22 transitions. [2020-07-01 11:10:25,500 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 22 transitions. [2020-07-01 11:10:25,500 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 22 transitions. [2020-07-01 11:10:25,500 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:10:25,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 22 transitions. [2020-07-01 11:10:25,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 11:10:25,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:10:25,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:10:25,502 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-07-01 11:10:25,502 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:10:25,502 INFO L794 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L24-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_10) (< v_ULTIMATE.start_main_~id~0_10 v_ULTIMATE.start_main_~maxId~0_10) (= (+ v_ULTIMATE.start_main_~id~0_10 1) v_ULTIMATE.start_main_~tmp~0_11)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_10, 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_~tmp~0=v_ULTIMATE.start_main_~tmp~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_~id~0=v_ULTIMATE.start_main_~id~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 174#L24-2 [50] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 175#L24 [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 176#L24-2 [50] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 177#L24 [2020-07-01 11:10:25,502 INFO L796 eck$LassoCheckResult]: Loop: 177#L24 [43] L24-->L24-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_7 v_ULTIMATE.start_main_~maxId~0_7) (= v_ULTIMATE.start_main_~tmp~0_6 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_7} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 178#L24-2 [49] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 177#L24 [2020-07-01 11:10:25,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,503 INFO L82 PathProgramCache]: Analyzing trace with hash 2581482, now seen corresponding path program 2 times [2020-07-01 11:10:25,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:25,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531590908] [2020-07-01 11:10:25,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,515 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2343, now seen corresponding path program 1 times [2020-07-01 11:10:25,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:25,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260678768] [2020-07-01 11:10:25,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,523 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:25,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1814161712, now seen corresponding path program 1 times [2020-07-01 11:10:25,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:25,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82460176] [2020-07-01 11:10:25,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:25,538 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:25,615 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:10:25,616 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:10:25,616 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:10:25,616 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:10:25,616 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:10:25,616 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:25,616 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:10:25,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:10:25,617 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Lasso [2020-07-01 11:10:25,617 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:10:25,617 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:10:25,619 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 11:10:25,622 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 11:10:25,625 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 11:10:25,642 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 11:10:25,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:10:25,650 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 11:10:25,653 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 11:10:25,728 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:10:25,728 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:25,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:25,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:25,743 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:25,744 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/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:25,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:25,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:25,779 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:25,779 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/sandbox/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 11:10:25,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:25,812 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 11:10:25,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:10:25,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:26,026 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:10:26,029 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:10:26,029 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:10:26,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:10:26,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:10:26,029 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:10:26,029 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:26,029 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:10:26,029 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:10:26,030 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Lasso [2020-07-01 11:10:26,030 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:10:26,030 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:10:26,032 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 11:10:26,035 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 11:10:26,037 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 11:10:26,039 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 11:10:26,056 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 11:10:26,059 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 11:10:26,065 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 11:10:26,126 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:10:26,126 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:26,130 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 11:10:26,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:26,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:10:26,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:26,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:26,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:26,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:10:26,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:10:26,135 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:26,166 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 11:10:26,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:26,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:10:26,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:26,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:26,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:26,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:10:26,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:10:26,172 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:26,204 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 11:10:26,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:26,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:10:26,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:26,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:26,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:26,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:10:26,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:10:26,209 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:26,241 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 11:10:26,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:26,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:26,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:26,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:26,248 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:10:26,249 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:10:26,257 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:10:26,273 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-07-01 11:10:26,273 INFO L444 ModelExtractionUtils]: 3 out of 13 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /export/starexec/sandbox/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 11:10:26,278 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:10:26,282 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-07-01 11:10:26,282 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:10:26,283 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~tmp~0) = 1*ULTIMATE.start_main_~tmp~0 Supporting invariants [1*ULTIMATE.start_main_~maxId~0 >= 0] [2020-07-01 11:10:26,315 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-07-01 11:10:26,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:26,341 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:10:26,342 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:26,361 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:10:26,361 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:26,377 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 11:10:26,432 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:10:26,432 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2020-07-01 11:10:26,432 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 8 states and 22 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-07-01 11:10:26,562 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 8 states and 22 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 93 states and 205 transitions. Complement of second has 35 states. [2020-07-01 11:10:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 11:10:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:10:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 30 transitions. [2020-07-01 11:10:26,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:10:26,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:26,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 6 letters. Loop has 2 letters. [2020-07-01 11:10:26,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:26,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 4 letters. Loop has 4 letters. [2020-07-01 11:10:26,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:26,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 205 transitions. [2020-07-01 11:10:26,571 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2020-07-01 11:10:26,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 23 states and 50 transitions. [2020-07-01 11:10:26,572 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 11:10:26,572 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 11:10:26,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 50 transitions. [2020-07-01 11:10:26,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:10:26,572 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 50 transitions. [2020-07-01 11:10:26,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 50 transitions. [2020-07-01 11:10:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16. [2020-07-01 11:10:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-01 11:10:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 42 transitions. [2020-07-01 11:10:26,575 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 42 transitions. [2020-07-01 11:10:26,575 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 42 transitions. [2020-07-01 11:10:26,575 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 11:10:26,575 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 42 transitions. [2020-07-01 11:10:26,576 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2020-07-01 11:10:26,576 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:10:26,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:10:26,577 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-07-01 11:10:26,577 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:10:26,577 INFO L794 eck$LassoCheckResult]: Stem: 366#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L24-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_10) (< v_ULTIMATE.start_main_~id~0_10 v_ULTIMATE.start_main_~maxId~0_10) (= (+ v_ULTIMATE.start_main_~id~0_10 1) v_ULTIMATE.start_main_~tmp~0_11)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_10, 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_~tmp~0=v_ULTIMATE.start_main_~tmp~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_~id~0=v_ULTIMATE.start_main_~id~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 367#L24-2 [48] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 372#L24 [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 373#L24-2 [48] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 375#L24 [2020-07-01 11:10:26,577 INFO L796 eck$LassoCheckResult]: Loop: 375#L24 [43] L24-->L24-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_7 v_ULTIMATE.start_main_~maxId~0_7) (= v_ULTIMATE.start_main_~tmp~0_6 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_7} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 379#L24-2 [49] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 375#L24 [2020-07-01 11:10:26,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:26,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2579558, now seen corresponding path program 2 times [2020-07-01 11:10:26,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:26,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652208222] [2020-07-01 11:10:26,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:26,588 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:26,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2343, now seen corresponding path program 2 times [2020-07-01 11:10:26,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:26,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745689709] [2020-07-01 11:10:26,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:26,594 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:26,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:26,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1816010676, now seen corresponding path program 1 times [2020-07-01 11:10:26,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:26,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774610609] [2020-07-01 11:10:26,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:26,606 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:26,657 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:10:26,658 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:10:26,658 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:10:26,658 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:10:26,658 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:10:26,658 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:26,658 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:10:26,658 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:10:26,658 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Lasso [2020-07-01 11:10:26,659 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:10:26,659 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:10:26,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:10:26,663 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 11:10:26,666 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 11:10:26,668 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 11:10:26,670 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 11:10:26,672 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 11:10:26,683 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 11:10:26,740 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:10:26,740 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:26,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:26,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:26,747 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:26,747 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:26,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:26,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:26,783 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:26,783 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-1} Honda state: {ULTIMATE.start_main_#t~nondet2=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:26,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:26,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:26,817 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:26,818 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/sandbox/solver/bin/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:26,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:26,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:26,852 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:26,853 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:26,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:26,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:26,888 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:10:26,888 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:26,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:10:26,919 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:10:26,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:10:26,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:10:27,130 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:10:27,133 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:10:27,133 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:10:27,133 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:10:27,133 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:10:27,133 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:10:27,133 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:27,133 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:10:27,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:10:27,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Lasso [2020-07-01 11:10:27,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:10:27,134 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:10:27,136 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 11:10:27,140 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 11:10:27,144 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 11:10:27,146 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 11:10:27,149 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 11:10:27,152 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 11:10:27,155 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 11:10:27,221 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:10:27,222 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:27,224 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 11:10:27,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:27,226 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:10:27,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:27,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:27,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:27,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:10:27,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:10:27,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:27,261 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 11:10:27,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:27,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:27,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:27,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:27,265 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:10:27,265 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:10:27,269 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:27,299 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 11:10:27,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:27,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:10:27,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:27,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:27,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:27,302 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:10:27,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:10:27,304 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:27,335 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 11:10:27,337 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:27,337 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:10:27,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:27,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:27,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:27,338 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:10:27,338 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:10:27,339 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:27,370 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 11:10:27,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:27,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:27,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:27,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:27,375 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:10:27,375 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:10:27,379 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:27,410 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 11:10:27,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:27,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:10:27,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:27,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:27,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:27,413 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:10:27,413 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:10:27,415 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:27,446 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 11:10:27,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:10:27,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:10:27,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:10:27,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:10:27,453 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 11:10:27,453 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 11:10:27,461 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:10:27,473 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-07-01 11:10:27,473 INFO L444 ModelExtractionUtils]: 4 out of 13 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:10:27,477 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:10:27,480 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-07-01 11:10:27,480 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:10:27,481 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~tmp~0) = 1*ULTIMATE.start_main_~tmp~0 Supporting invariants [1*ULTIMATE.start_main_~maxId~0 >= 0] [2020-07-01 11:10:27,512 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-07-01 11:10:27,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:27,536 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:10:27,536 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:27,550 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 11:10:27,551 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:27,563 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 11:10:27,600 INFO L98 LoopCannibalizer]: 4 predicates before loop cannibalization 4 predicates after loop cannibalization [2020-07-01 11:10:27,601 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2020-07-01 11:10:27,601 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 16 states and 42 transitions. cyclomatic complexity: 28 Second operand 4 states. [2020-07-01 11:10:27,728 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 16 states and 42 transitions. cyclomatic complexity: 28. Second operand 4 states. Result 160 states and 341 transitions. Complement of second has 35 states. [2020-07-01 11:10:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 11:10:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:10:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 30 transitions. [2020-07-01 11:10:27,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 11:10:27,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:27,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 6 letters. Loop has 2 letters. [2020-07-01 11:10:27,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:27,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 4 letters. Loop has 4 letters. [2020-07-01 11:10:27,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:10:27,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 341 transitions. [2020-07-01 11:10:27,737 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 31 [2020-07-01 11:10:27,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 38 states and 77 transitions. [2020-07-01 11:10:27,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 11:10:27,738 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-07-01 11:10:27,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 77 transitions. [2020-07-01 11:10:27,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:10:27,738 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 77 transitions. [2020-07-01 11:10:27,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 77 transitions. [2020-07-01 11:10:27,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 10. [2020-07-01 11:10:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 11:10:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 23 transitions. [2020-07-01 11:10:27,741 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 23 transitions. [2020-07-01 11:10:27,741 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 23 transitions. [2020-07-01 11:10:27,741 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 11:10:27,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 23 transitions. [2020-07-01 11:10:27,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-07-01 11:10:27,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:10:27,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:10:27,742 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-07-01 11:10:27,742 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 11:10:27,742 INFO L794 eck$LassoCheckResult]: Stem: 634#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L24-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_10) (< v_ULTIMATE.start_main_~id~0_10 v_ULTIMATE.start_main_~maxId~0_10) (= (+ v_ULTIMATE.start_main_~id~0_10 1) v_ULTIMATE.start_main_~tmp~0_11)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_10, 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_~tmp~0=v_ULTIMATE.start_main_~tmp~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_~id~0=v_ULTIMATE.start_main_~id~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 635#L24-2 [50] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 640#L24 [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 641#L24-2 [50] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 639#L24 [2020-07-01 11:10:27,743 INFO L796 eck$LassoCheckResult]: Loop: 639#L24 [43] L24-->L24-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_7 v_ULTIMATE.start_main_~maxId~0_7) (= v_ULTIMATE.start_main_~tmp~0_6 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_7} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 638#L24-2 [49] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 637#L24 [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 643#L24-2 [48] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 639#L24 [2020-07-01 11:10:27,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:27,743 INFO L82 PathProgramCache]: Analyzing trace with hash 2581482, now seen corresponding path program 3 times [2020-07-01 11:10:27,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:27,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126440374] [2020-07-01 11:10:27,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:27,753 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:27,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:27,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2252818, now seen corresponding path program 1 times [2020-07-01 11:10:27,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:27,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622300866] [2020-07-01 11:10:27,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:10:27,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622300866] [2020-07-01 11:10:27,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:10:27,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 11:10:27,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645283117] [2020-07-01 11:10:27,798 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 11:10:27,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:10:27,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 11:10:27,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 11:10:27,799 INFO L87 Difference]: Start difference. First operand 10 states and 23 transitions. cyclomatic complexity: 14 Second operand 4 states. [2020-07-01 11:10:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:10:27,834 INFO L93 Difference]: Finished difference Result 10 states and 19 transitions. [2020-07-01 11:10:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 11:10:27,836 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 19 transitions. [2020-07-01 11:10:27,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:10:27,837 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 19 transitions. [2020-07-01 11:10:27,837 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 11:10:27,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:10:27,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 19 transitions. [2020-07-01 11:10:27,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:10:27,837 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 19 transitions. [2020-07-01 11:10:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 19 transitions. [2020-07-01 11:10:27,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-01 11:10:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 11:10:27,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 19 transitions. [2020-07-01 11:10:27,839 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 19 transitions. [2020-07-01 11:10:27,839 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 19 transitions. [2020-07-01 11:10:27,839 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2020-07-01 11:10:27,839 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 19 transitions. [2020-07-01 11:10:27,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:10:27,840 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:10:27,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:10:27,840 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1] [2020-07-01 11:10:27,841 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-07-01 11:10:27,841 INFO L794 eck$LassoCheckResult]: Stem: 661#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L24-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_10) (< v_ULTIMATE.start_main_~id~0_10 v_ULTIMATE.start_main_~maxId~0_10) (= (+ v_ULTIMATE.start_main_~id~0_10 1) v_ULTIMATE.start_main_~tmp~0_11)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_10, 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_~tmp~0=v_ULTIMATE.start_main_~tmp~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_~id~0=v_ULTIMATE.start_main_~id~0_10} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 662#L24-2 [50] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 668#L24 [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 669#L24-2 [50] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 670#L24 [43] L24-->L24-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_7 v_ULTIMATE.start_main_~maxId~0_7) (= v_ULTIMATE.start_main_~tmp~0_6 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_7} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 665#L24-2 [51] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 664#L24 [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 667#L24-2 [51] L24-2-->L24: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 666#L24 [2020-07-01 11:10:27,841 INFO L796 eck$LassoCheckResult]: Loop: 666#L24 [43] L24-->L24-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_7 v_ULTIMATE.start_main_~maxId~0_7) (= v_ULTIMATE.start_main_~tmp~0_6 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_7} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_7, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 663#L24-2 [49] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 664#L24 [37] L24-->L24-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 667#L24-2 [49] L24-2-->L24: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_10 v_ULTIMATE.start_main_~id~0_9)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_10, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 666#L24 [2020-07-01 11:10:27,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:27,842 INFO L82 PathProgramCache]: Analyzing trace with hash 347320064, now seen corresponding path program 1 times [2020-07-01 11:10:27,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:27,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494064863] [2020-07-01 11:10:27,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:27,855 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:27,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2252819, now seen corresponding path program 1 times [2020-07-01 11:10:27,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:27,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39642956] [2020-07-01 11:10:27,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:10:27,864 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:10:27,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:10:27,864 INFO L82 PathProgramCache]: Analyzing trace with hash 626554770, now seen corresponding path program 1 times [2020-07-01 11:10:27,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:10:27,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871299626] [2020-07-01 11:10:27,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:10:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-01 11:10:27,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871299626] [2020-07-01 11:10:27,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610556290] [2020-07-01 11:10:27,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:10:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:10:27,925 INFO L264 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 11:10:27,926 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:10:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-01 11:10:27,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 11:10:27,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-07-01 11:10:27,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754279489] [2020-07-01 11:10:27,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:10:27,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 11:10:27,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 11:10:27,967 INFO L87 Difference]: Start difference. First operand 10 states and 19 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-07-01 11:10:27,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:10:27,985 INFO L93 Difference]: Finished difference Result 9 states and 16 transitions. [2020-07-01 11:10:27,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 11:10:27,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 16 transitions. [2020-07-01 11:10:27,987 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:10:27,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2020-07-01 11:10:27,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:10:27,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:10:27,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:10:27,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:10:27,988 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:10:27,988 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:10:27,988 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:10:27,988 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2020-07-01 11:10:27,988 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:10:27,989 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:10:27,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:10:27,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:10:27 BasicIcfg [2020-07-01 11:10:27,995 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:10:27,997 INFO L168 Benchmark]: Toolchain (without parser) took 5456.51 ms. Allocated memory was 514.9 MB in the beginning and 638.6 MB in the end (delta: 123.7 MB). Free memory was 439.0 MB in the beginning and 569.9 MB in the end (delta: -131.0 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:10:27,997 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:10:27,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.17 ms. Allocated memory was 514.9 MB in the beginning and 565.2 MB in the end (delta: 50.3 MB). Free memory was 438.4 MB in the beginning and 532.5 MB in the end (delta: -94.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:10:27,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.61 ms. Allocated memory is still 565.2 MB. Free memory was 532.5 MB in the beginning and 530.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:10:27,999 INFO L168 Benchmark]: Boogie Preprocessor took 19.65 ms. Allocated memory is still 565.2 MB. Free memory was 530.9 MB in the beginning and 529.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:10:27,999 INFO L168 Benchmark]: RCFGBuilder took 234.25 ms. Allocated memory is still 565.2 MB. Free memory was 529.7 MB in the beginning and 517.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:10:28,000 INFO L168 Benchmark]: BlockEncodingV2 took 80.04 ms. Allocated memory is still 565.2 MB. Free memory was 517.4 MB in the beginning and 511.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:10:28,000 INFO L168 Benchmark]: TraceAbstraction took 145.50 ms. Allocated memory is still 565.2 MB. Free memory was 510.9 MB in the beginning and 503.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 50.3 GB. [2020-07-01 11:10:28,000 INFO L168 Benchmark]: BuchiAutomizer took 4639.03 ms. Allocated memory was 565.2 MB in the beginning and 638.6 MB in the end (delta: 73.4 MB). Free memory was 502.4 MB in the beginning and 569.9 MB in the end (delta: -67.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 50.3 GB. [2020-07-01 11:10:28,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 3 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 296.17 ms. Allocated memory was 514.9 MB in the beginning and 565.2 MB in the end (delta: 50.3 MB). Free memory was 438.4 MB in the beginning and 532.5 MB in the end (delta: -94.0 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.61 ms. Allocated memory is still 565.2 MB. Free memory was 532.5 MB in the beginning and 530.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.65 ms. Allocated memory is still 565.2 MB. Free memory was 530.9 MB in the beginning and 529.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 234.25 ms. Allocated memory is still 565.2 MB. Free memory was 529.7 MB in the beginning and 517.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 80.04 ms. Allocated memory is still 565.2 MB. Free memory was 517.4 MB in the beginning and 511.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 145.50 ms. Allocated memory is still 565.2 MB. Free memory was 510.9 MB in the beginning and 503.0 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4639.03 ms. Allocated memory was 565.2 MB in the beginning and 638.6 MB in the end (delta: 73.4 MB). Free memory was 502.4 MB in the beginning and 569.9 MB in the end (delta: -67.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 23]: 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 9 terminating modules (5 trivial, 0 deterministic, 4 nondeterministic). One nondeterministic module has affine ranking function 2 * maxId + -2 * tmp + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * maxId + -2 * tmp + 1 and consists of 3 locations. One nondeterministic module has affine ranking function tmp and consists of 8 locations. One nondeterministic module has affine ranking function tmp and consists of 8 locations. 5 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 8. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 13 SDtfs, 91 SDslu, 4 SDs, 0 SdLazy, 192 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc3 concLT0 SILN0 SILU0 SILI0 SILT1 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax160 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq144 hnf94 smp100 dnf100 smp100 tf105 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:10:19.247 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_a5RSEK/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:10:28.636 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check