/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 13:19:07,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 13:19:07,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 13:19:07,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 13:19:07,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 13:19:07,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 13:19:07,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 13:19:07,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 13:19:07,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 13:19:07,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 13:19:07,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 13:19:07,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 13:19:07,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 13:19:07,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 13:19:07,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 13:19:07,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 13:19:07,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 13:19:07,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 13:19:07,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 13:19:07,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 13:19:07,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 13:19:07,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 13:19:07,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 13:19:07,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 13:19:07,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 13:19:07,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 13:19:07,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 13:19:07,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 13:19:07,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 13:19:07,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 13:19:07,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 13:19:07,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 13:19:07,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 13:19:07,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 13:19:07,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 13:19:07,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 13:19:07,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 13:19:07,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 13:19:07,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 13:19:07,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 13:19:07,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 13:19:07,063 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 13:19:07,077 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 13:19:07,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 13:19:07,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 13:19:07,079 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 13:19:07,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 13:19:07,079 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:19:07,079 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 13:19:07,079 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 13:19:07,079 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 13:19:07,080 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 13:19:07,080 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 13:19:07,080 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 13:19:07,080 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 13:19:07,080 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 13:19:07,080 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:07,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 13:19:07,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 13:19:07,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 13:19:07,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 13:19:07,081 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 13:19:07,081 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 13:19:07,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 13:19:07,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 13:19:07,082 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 13:19:07,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:19:07,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 13:19:07,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 13:19:07,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 13:19:07,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 13:19:07,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 13:19:07,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 13:19:07,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 13:19:07,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 13:19:07,265 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 13:19:07,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 13:19:07,327 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_JVPCHH/tmp/08add5e07f0b4c01ba7c249961193e1f/FLAG9d215bfcc [2020-07-01 13:19:07,671 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 13:19:07,672 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 13:19:07,678 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_JVPCHH/tmp/08add5e07f0b4c01ba7c249961193e1f/FLAG9d215bfcc [2020-07-01 13:19:08,172 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_JVPCHH/tmp/08add5e07f0b4c01ba7c249961193e1f [2020-07-01 13:19:08,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 13:19:08,185 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 13:19:08,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 13:19:08,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 13:19:08,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 13:19:08,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4563638d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08, skipping insertion in model container [2020-07-01 13:19:08,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 13:19:08,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 13:19:08,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:19:08,439 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 13:19:08,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:19:08,469 INFO L208 MainTranslator]: Completed translation [2020-07-01 13:19:08,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08 WrapperNode [2020-07-01 13:19:08,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 13:19:08,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 13:19:08,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 13:19:08,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 13:19:08,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 13:19:08,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 13:19:08,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 13:19:08,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 13:19:08,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 13:19:08,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 13:19:08,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 13:19:08,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 13:19:08,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:19:08,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 13:19:08,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 13:19:08,737 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 13:19:08,738 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 13:19:08,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:19:08 BoogieIcfgContainer [2020-07-01 13:19:08,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 13:19:08,742 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 13:19:08,742 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 13:19:08,744 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 13:19:08,745 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:19:08" (1/1) ... [2020-07-01 13:19:08,757 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 13:19:08,759 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 13:19:08,759 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 13:19:08,760 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 13:19:08,760 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:19:08,762 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 13:19:08,763 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 13:19:08,763 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 13:19:08,778 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 13:19:08,793 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 13:19:08,797 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 13:19:08,798 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:19:08,809 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 13:19:08,811 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 13:19:08,812 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:19:08,812 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:19:08,812 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 13:19:08,813 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 13:19:08,813 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2020-07-01 13:19:08,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:19:08 BasicIcfg [2020-07-01 13:19:08,814 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 13:19:08,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 13:19:08,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 13:19:08,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 13:19:08,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 01:19:08" (1/4) ... [2020-07-01 13:19:08,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a2f33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:19:08, skipping insertion in model container [2020-07-01 13:19:08,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (2/4) ... [2020-07-01 13:19:08,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a2f33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:19:08, skipping insertion in model container [2020-07-01 13:19:08,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:19:08" (3/4) ... [2020-07-01 13:19:08,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a2f33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:19:08, skipping insertion in model container [2020-07-01 13:19:08,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:19:08" (4/4) ... [2020-07-01 13:19:08,822 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:19:08,834 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 13:19:08,841 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 13:19:08,855 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 13:19:08,878 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 13:19:08,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 13:19:08,878 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:19:08,878 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:19:08,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:19:08,879 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 13:19:08,879 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:19:08,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 13:19:08,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 13:19:08,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 13:19:08,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 13:19:08,905 INFO L268 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2020-07-01 13:19:08,905 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 13:19:08,906 INFO L268 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-07-01 13:19:08,906 INFO L268 CegarLoopResult]: For program point L20-2(lines 5 25) no Hoare annotation was computed. [2020-07-01 13:19:08,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:19:08 BasicIcfg [2020-07-01 13:19:08,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 13:19:08,910 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 13:19:08,910 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 13:19:08,913 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 13:19:08,914 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:19:08,914 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 01:19:08" (1/5) ... [2020-07-01 13:19:08,915 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29cafca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:19:08, skipping insertion in model container [2020-07-01 13:19:08,915 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:19:08,915 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:19:08" (2/5) ... [2020-07-01 13:19:08,916 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29cafca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:19:08, skipping insertion in model container [2020-07-01 13:19:08,916 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:19:08,916 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:19:08" (3/5) ... [2020-07-01 13:19:08,917 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29cafca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:19:08, skipping insertion in model container [2020-07-01 13:19:08,917 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:19:08,917 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:19:08" (4/5) ... [2020-07-01 13:19:08,917 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29cafca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:19:08, skipping insertion in model container [2020-07-01 13:19:08,917 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:19:08,917 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:19:08" (5/5) ... [2020-07-01 13:19:08,919 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:19:08,948 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 13:19:08,948 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 13:19:08,948 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:19:08,948 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:19:08,949 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:19:08,949 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 13:19:08,949 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:19:08,949 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 13:19:08,952 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 13:19:08,970 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 13:19:08,971 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:19:08,971 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:19:08,978 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:19:08,978 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 13:19:08,978 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 13:19:08,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 13:19:08,979 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 13:19:08,979 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:19:08,979 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:19:08,980 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:19:08,980 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 13:19:08,985 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [29] ULTIMATE.startENTRY-->L14: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~res~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_1, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~min~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 5#L14true [40] L14-->L20-2: Formula: (and (>= v_ULTIMATE.start_main_~x~0_9 v_ULTIMATE.start_main_~y~0_9) (= v_ULTIMATE.start_main_~min~0_7 v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~min~0] 4#L20-2true [2020-07-01 13:19:08,986 INFO L796 eck$LassoCheckResult]: Loop: 4#L20-2true [33] L20-2-->L20: Formula: (and (= v_ULTIMATE.start_main_~min~0_9 v_ULTIMATE.start_main_~y~0_12) (= v_ULTIMATE.start_main_~y~0_11 (+ v_ULTIMATE.start_main_~y~0_12 1)) (= v_ULTIMATE.start_main_~res~0_6 (+ v_ULTIMATE.start_main_~res~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_7, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_6, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~y~0] 6#L20true [38] L20-->L20-2: Formula: (and (< v_ULTIMATE.start_main_~x~0_6 v_ULTIMATE.start_main_~y~0_6) (= v_ULTIMATE.start_main_~min~0_4 v_ULTIMATE.start_main_~x~0_6)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~min~0] 4#L20-2true [2020-07-01 13:19:08,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:08,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1900, now seen corresponding path program 1 times [2020-07-01 13:19:09,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:19:09,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267499539] [2020-07-01 13:19:09,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:19:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:09,118 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:19:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2022, now seen corresponding path program 1 times [2020-07-01 13:19:09,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:19:09,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153941441] [2020-07-01 13:19:09,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:19:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:09,135 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:19:09,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1826961, now seen corresponding path program 1 times [2020-07-01 13:19:09,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:19:09,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935984428] [2020-07-01 13:19:09,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:19:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:09,154 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:19:09,214 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:19:09,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:19:09,232 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:19:09,232 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:19:09,232 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:19:09,232 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:09,232 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:19:09,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:19:09,233 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:19:09,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:19:09,233 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:19:09,254 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 13:19:09,264 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 13:19:09,269 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 13:19:09,287 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 13:19:09,395 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:19:09,396 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:09,404 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:19:09,404 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:19:09,415 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:19:09,415 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:09,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:19:09,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:19:09,456 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:19:09,456 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:09,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:19:09,492 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:09,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:19:09,531 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:19:10,248 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:19:10,252 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:19:10,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:19:10,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:19:10,253 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:19:10,253 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:19:10,253 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:10,253 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:19:10,253 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:19:10,253 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:19:10,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:19:10,254 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:19:10,255 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 13:19:10,260 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 13:19:10,264 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 13:19:10,276 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 13:19:10,349 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:19:10,355 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:10,361 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 13:19:10,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:19:10,364 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:19:10,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:19:10,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:19:10,370 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 13:19:10,370 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 13:19:10,376 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:10,411 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 13:19:10,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:19:10,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:19:10,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:19:10,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:19:10,418 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 13:19:10,418 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 13:19:10,423 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:10,457 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 13:19:10,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:19:10,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:19:10,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:19:10,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:19:10,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:19:10,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:19:10,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:19:10,467 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:19:10,473 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 13:19:10,473 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/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:10,479 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:19:10,480 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:19:10,480 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:19:10,481 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~min~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~min~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-07-01 13:19:10,514 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:19:10,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:10,558 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:19:10,560 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:10,574 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 13:19:10,575 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:10,624 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 13:19:10,637 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 13:19:10,642 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 13:19:10,643 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 3 states. [2020-07-01 13:19:10,692 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 3 states. Result 7 states and 10 transitions. Complement of second has 2 states. [2020-07-01 13:19:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-07-01 13:19:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 13:19:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2020-07-01 13:19:10,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 13:19:10,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:10,699 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-07-01 13:19:10,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:10,716 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:19:10,717 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:10,722 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 13:19:10,722 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:10,747 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 13:19:10,748 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 13:19:10,748 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 3 states. [2020-07-01 13:19:10,794 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 4 states. [2020-07-01 13:19:10,795 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 13:19:10,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 13:19:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-01 13:19:10,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 13:19:10,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:10,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 13:19:10,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:10,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 13:19:10,797 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:10,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2020-07-01 13:19:10,805 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-07-01 13:19:10,809 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2020-07-01 13:19:10,810 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 13:19:10,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 13:19:10,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2020-07-01 13:19:10,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:19:10,812 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2020-07-01 13:19:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2020-07-01 13:19:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-07-01 13:19:10,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 13:19:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2020-07-01 13:19:10,842 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-07-01 13:19:10,843 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-07-01 13:19:10,843 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 13:19:10,843 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2020-07-01 13:19:10,844 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-07-01 13:19:10,844 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:19:10,844 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:19:10,844 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:19:10,844 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 13:19:10,845 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY [29] ULTIMATE.startENTRY-->L14: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~res~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_1, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~min~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 73#L14 [36] L14-->L20-2: Formula: (and (< v_ULTIMATE.start_main_~x~0_7 v_ULTIMATE.start_main_~y~0_7) (= v_ULTIMATE.start_main_~min~0_5 v_ULTIMATE.start_main_~x~0_7)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~min~0] 78#L20-2 [2020-07-01 13:19:10,845 INFO L796 eck$LassoCheckResult]: Loop: 78#L20-2 [33] L20-2-->L20: Formula: (and (= v_ULTIMATE.start_main_~min~0_9 v_ULTIMATE.start_main_~y~0_12) (= v_ULTIMATE.start_main_~y~0_11 (+ v_ULTIMATE.start_main_~y~0_12 1)) (= v_ULTIMATE.start_main_~res~0_6 (+ v_ULTIMATE.start_main_~res~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_7, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_6, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~y~0] 81#L20 [38] L20-->L20-2: Formula: (and (< v_ULTIMATE.start_main_~x~0_6 v_ULTIMATE.start_main_~y~0_6) (= v_ULTIMATE.start_main_~min~0_4 v_ULTIMATE.start_main_~x~0_6)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_6, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_4, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~min~0] 78#L20-2 [2020-07-01 13:19:10,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:10,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1896, now seen corresponding path program 1 times [2020-07-01 13:19:10,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:19:10,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44544715] [2020-07-01 13:19:10,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:19:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:10,855 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:19:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:10,856 INFO L82 PathProgramCache]: Analyzing trace with hash 2022, now seen corresponding path program 2 times [2020-07-01 13:19:10,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:19:10,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656702796] [2020-07-01 13:19:10,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:19:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:10,866 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:19:10,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:10,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1823117, now seen corresponding path program 1 times [2020-07-01 13:19:10,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:19:10,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032901260] [2020-07-01 13:19:10,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:19:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:10,957 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 13:19:10,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032901260] [2020-07-01 13:19:10,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:19:10,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 13:19:10,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661178995] [2020-07-01 13:19:10,989 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:19:10,989 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:19:10,989 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:19:10,990 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:19:10,990 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:19:10,990 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:10,990 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:19:10,990 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:19:10,990 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 13:19:10,990 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:19:10,990 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:19:10,992 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 13:19:11,004 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 13:19:11,008 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 13:19:11,025 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 13:19:11,101 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:19:11,101 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:11,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:19:11,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:19:11,116 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:19:11,117 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:11,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:19:11,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:19:11,165 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:19:11,166 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:11,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:19:11,202 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:11,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:19:11,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:19:12,098 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:19:12,102 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:19:12,102 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:19:12,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:19:12,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:19:12,102 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:19:12,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:12,102 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:19:12,102 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:19:12,103 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 13:19:12,103 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:19:12,103 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:19:12,105 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 13:19:12,109 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 13:19:12,114 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 13:19:12,130 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 13:19:12,207 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:19:12,207 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:12,214 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 13:19:12,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:19:12,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:19:12,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:19:12,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:19:12,219 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 13:19:12,219 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 13:19:12,224 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:12,257 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 13:19:12,259 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:19:12,259 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:19:12,259 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:19:12,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:19:12,263 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-07-01 13:19:12,263 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-07-01 13:19:12,267 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:12,301 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 13:19:12,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:19:12,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:19:12,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:19:12,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:19:12,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:19:12,305 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:19:12,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:19:12,309 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:19:12,314 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 13:19:12,314 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/sandbox2/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:12,319 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:19:12,319 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:19:12,320 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:19:12,320 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~min~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~min~0 + 1 Supporting invariants [] [2020-07-01 13:19:12,350 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:19:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:12,375 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:19:12,375 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:12,383 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 13:19:12,383 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:12,406 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 13:19:12,406 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 13:19:12,406 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 13:19:12,407 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states and 15 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-07-01 13:19:12,431 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states and 15 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 19 transitions. Complement of second has 2 states. [2020-07-01 13:19:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-07-01 13:19:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 13:19:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2020-07-01 13:19:12,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 13:19:12,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:12,432 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-07-01 13:19:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:12,451 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:19:12,451 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:12,457 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 13:19:12,458 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:12,477 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 13:19:12,478 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 13:19:12,478 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 10 states and 15 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-07-01 13:19:12,517 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 10 states and 15 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 22 transitions. Complement of second has 4 states. [2020-07-01 13:19:12,517 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 13:19:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 13:19:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-01 13:19:12,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 13:19:12,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:12,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 13:19:12,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:12,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 13:19:12,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:12,521 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2020-07-01 13:19:12,522 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-07-01 13:19:12,522 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 22 transitions. [2020-07-01 13:19:12,522 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 13:19:12,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 13:19:12,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2020-07-01 13:19:12,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:19:12,523 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-07-01 13:19:12,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2020-07-01 13:19:12,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 8. [2020-07-01 13:19:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 13:19:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2020-07-01 13:19:12,525 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2020-07-01 13:19:12,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:19:12,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 13:19:12,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 13:19:12,528 INFO L87 Difference]: Start difference. First operand 8 states and 12 transitions. Second operand 3 states. [2020-07-01 13:19:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:19:12,542 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-07-01 13:19:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 13:19:12,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2020-07-01 13:19:12,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 13:19:12,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 5 transitions. [2020-07-01 13:19:12,544 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 13:19:12,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 13:19:12,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 5 transitions. [2020-07-01 13:19:12,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 13:19:12,545 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 5 transitions. [2020-07-01 13:19:12,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 5 transitions. [2020-07-01 13:19:12,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 4. [2020-07-01 13:19:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 13:19:12,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2020-07-01 13:19:12,546 INFO L711 BuchiCegarLoop]: Abstraction has 4 states and 4 transitions. [2020-07-01 13:19:12,546 INFO L591 BuchiCegarLoop]: Abstraction has 4 states and 4 transitions. [2020-07-01 13:19:12,546 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 13:19:12,547 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 4 transitions. [2020-07-01 13:19:12,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 13:19:12,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:19:12,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:19:12,548 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:19:12,548 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 13:19:12,548 INFO L794 eck$LassoCheckResult]: Stem: 175#ULTIMATE.startENTRY [29] ULTIMATE.startENTRY-->L14: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) (= v_ULTIMATE.start_main_~res~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_1, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~min~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 176#L14 [40] L14-->L20-2: Formula: (and (>= v_ULTIMATE.start_main_~x~0_9 v_ULTIMATE.start_main_~y~0_9) (= v_ULTIMATE.start_main_~min~0_7 v_ULTIMATE.start_main_~y~0_9)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_9, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~min~0] 177#L20-2 [2020-07-01 13:19:12,548 INFO L796 eck$LassoCheckResult]: Loop: 177#L20-2 [33] L20-2-->L20: Formula: (and (= v_ULTIMATE.start_main_~min~0_9 v_ULTIMATE.start_main_~y~0_12) (= v_ULTIMATE.start_main_~y~0_11 (+ v_ULTIMATE.start_main_~y~0_12 1)) (= v_ULTIMATE.start_main_~res~0_6 (+ v_ULTIMATE.start_main_~res~0_7 1))) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_12, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_7, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_9} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_11, ULTIMATE.start_main_~res~0=v_ULTIMATE.start_main_~res~0_6, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_9} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~0, ULTIMATE.start_main_~y~0] 178#L20 [42] L20-->L20-2: Formula: (and (= v_ULTIMATE.start_main_~min~0_6 v_ULTIMATE.start_main_~y~0_8) (>= v_ULTIMATE.start_main_~x~0_8 v_ULTIMATE.start_main_~y~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_8, ULTIMATE.start_main_~min~0=v_ULTIMATE.start_main_~min~0_6, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~min~0] 177#L20-2 [2020-07-01 13:19:12,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1900, now seen corresponding path program 2 times [2020-07-01 13:19:12,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:19:12,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610847993] [2020-07-01 13:19:12,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:19:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:12,557 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:19:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:12,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2026, now seen corresponding path program 1 times [2020-07-01 13:19:12,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:19:12,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294780566] [2020-07-01 13:19:12,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:19:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:12,567 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:19:12,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:12,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1826965, now seen corresponding path program 1 times [2020-07-01 13:19:12,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:19:12,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482869469] [2020-07-01 13:19:12,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:19:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:19:12,579 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:19:12,599 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:19:12,600 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:19:12,600 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:19:12,600 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:19:12,600 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:19:12,600 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:12,600 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:19:12,600 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:19:12,600 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 13:19:12,600 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:19:12,601 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:19:12,602 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 13:19:12,626 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 13:19:12,645 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 13:19:12,650 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 13:19:12,716 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:19:12,716 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:12,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:19:12,721 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:12,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:19:12,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:19:12,777 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:19:12,777 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=6}, {ULTIMATE.start_main_~res~0=1}, {ULTIMATE.start_main_~res~0=-6}] Lambdas: [1, 1, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:12,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:19:12,811 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:19:12,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:19:12,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:19:13,545 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:19:13,549 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:19:13,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:19:13,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:19:13,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:19:13,549 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:19:13,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:19:13,550 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:19:13,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:19:13,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 13:19:13,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:19:13,550 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:19:13,551 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 13:19:13,555 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 13:19:13,564 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 13:19:13,568 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 13:19:13,623 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:19:13,623 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/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 13:19:13,628 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 13:19:13,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:19:13,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:19:13,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:19:13,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:19:13,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:19:13,632 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:19:13,632 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:19:13,634 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 13:19:13,667 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 13:19:13,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:19:13,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:19:13,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:19:13,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:19:13,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:19:13,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:19:13,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:19:13,674 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:19:13,679 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 13:19:13,680 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 13:19:13,682 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:19:13,682 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:19:13,682 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:19:13,683 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~min~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~min~0 Supporting invariants [] [2020-07-01 13:19:13,712 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:19:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:19:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:13,728 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:19:13,728 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:19:13,732 WARN L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 13:19:13,733 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:19:13,741 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 13:19:13,741 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 13:19:13,742 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-07-01 13:19:13,742 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states and 4 transitions. cyclomatic complexity: 1 Second operand 3 states. [2020-07-01 13:19:13,764 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states and 4 transitions. cyclomatic complexity: 1. Second operand 3 states. Result 6 states and 7 transitions. Complement of second has 4 states. [2020-07-01 13:19:13,765 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 13:19:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 13:19:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-07-01 13:19:13,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 13:19:13,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:13,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2020-07-01 13:19:13,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:13,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 4 letters. [2020-07-01 13:19:13,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:19:13,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 7 transitions. [2020-07-01 13:19:13,768 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:19:13,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2020-07-01 13:19:13,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 13:19:13,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 13:19:13,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 13:19:13,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 13:19:13,769 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:19:13,769 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:19:13,769 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:19:13,769 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 13:19:13,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 13:19:13,769 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:19:13,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 13:19:13,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:19:13 BasicIcfg [2020-07-01 13:19:13,775 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 13:19:13,778 INFO L168 Benchmark]: Toolchain (without parser) took 5591.84 ms. Allocated memory was 649.6 MB in the beginning and 761.8 MB in the end (delta: 112.2 MB). Free memory was 556.3 MB in the beginning and 642.7 MB in the end (delta: -86.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 50.3 GB. [2020-07-01 13:19:13,778 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 13:19:13,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.46 ms. Allocated memory was 649.6 MB in the beginning and 691.5 MB in the end (delta: 41.9 MB). Free memory was 556.3 MB in the beginning and 655.4 MB in the end (delta: -99.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. [2020-07-01 13:19:13,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.69 ms. Allocated memory is still 691.5 MB. Free memory was 655.4 MB in the beginning and 654.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:19:13,780 INFO L168 Benchmark]: Boogie Preprocessor took 19.11 ms. Allocated memory is still 691.5 MB. Free memory was 654.3 MB in the beginning and 653.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:19:13,780 INFO L168 Benchmark]: RCFGBuilder took 219.02 ms. Allocated memory is still 691.5 MB. Free memory was 653.2 MB in the beginning and 638.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 50.3 GB. [2020-07-01 13:19:13,781 INFO L168 Benchmark]: BlockEncodingV2 took 71.80 ms. Allocated memory is still 691.5 MB. Free memory was 638.3 MB in the beginning and 632.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:19:13,781 INFO L168 Benchmark]: TraceAbstraction took 94.22 ms. Allocated memory is still 691.5 MB. Free memory was 632.9 MB in the beginning and 626.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. [2020-07-01 13:19:13,782 INFO L168 Benchmark]: BuchiAutomizer took 4865.52 ms. Allocated memory was 691.5 MB in the beginning and 761.8 MB in the end (delta: 70.3 MB). Free memory was 626.5 MB in the beginning and 642.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:19:13,786 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 4 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 283.46 ms. Allocated memory was 649.6 MB in the beginning and 691.5 MB in the end (delta: 41.9 MB). Free memory was 556.3 MB in the beginning and 655.4 MB in the end (delta: -99.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.69 ms. Allocated memory is still 691.5 MB. Free memory was 655.4 MB in the beginning and 654.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.11 ms. Allocated memory is still 691.5 MB. Free memory was 654.3 MB in the beginning and 653.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 219.02 ms. Allocated memory is still 691.5 MB. Free memory was 653.2 MB in the beginning and 638.3 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 71.80 ms. Allocated memory is still 691.5 MB. Free memory was 638.3 MB in the beginning and 632.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 94.22 ms. Allocated memory is still 691.5 MB. Free memory was 632.9 MB in the beginning and 626.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 4865.52 ms. Allocated memory was 691.5 MB in the beginning and 761.8 MB in the end (delta: 70.3 MB). Free memory was 626.5 MB in the beginning and 642.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 54.1 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 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=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function 2 * min + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2 * min + 1 and consists of 3 locations. One nondeterministic module has affine ranking function x + -1 * min and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.8s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 4.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 1. Nontrivial modules had stage [1, 2, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 29 SDslu, 0 SDs, 0 SdLazy, 45 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax157 hnf100 lsp48 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf90 smp100 dnf100 smp100 tf107 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 13:19:04.787 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp/BenchExec_run_JVPCHH/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 13:19:14.231 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check