/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 13:14:21,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 13:14:21,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 13:14:21,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 13:14:21,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 13:14:21,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 13:14:21,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 13:14:21,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 13:14:21,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 13:14:21,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 13:14:21,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 13:14:21,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 13:14:21,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 13:14:21,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 13:14:21,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 13:14:21,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 13:14:21,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 13:14:21,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 13:14:21,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 13:14:21,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 13:14:21,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 13:14:21,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 13:14:21,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 13:14:21,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 13:14:21,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 13:14:21,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 13:14:21,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 13:14:21,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 13:14:21,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 13:14:21,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 13:14:21,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 13:14:21,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 13:14:21,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 13:14:21,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 13:14:21,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 13:14:21,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 13:14:21,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 13:14:21,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 13:14:21,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 13:14:21,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 13:14:21,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 13:14:21,761 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 13:14:21,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 13:14:21,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 13:14:21,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 13:14:21,777 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 13:14:21,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 13:14:21,777 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:14:21,777 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 13:14:21,777 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 13:14:21,777 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 13:14:21,778 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 13:14:21,778 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 13:14:21,778 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 13:14:21,778 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 13:14:21,778 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 13:14:21,778 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:21,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 13:14:21,779 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 13:14:21,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 13:14:21,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 13:14:21,779 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 13:14:21,779 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 13:14:21,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 13:14:21,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 13:14:21,780 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 13:14:21,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:14:21,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 13:14:21,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 13:14:21,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 13:14:21,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 13:14:21,944 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 13:14:21,959 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 13:14:21,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 13:14:21,964 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 13:14:21,964 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 13:14:21,965 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 13:14:22,057 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_FzPUET/tmp/c931d93fa11744589005c639379471ae/FLAG2137193f4 [2020-07-01 13:14:22,394 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 13:14:22,395 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 13:14:22,402 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_FzPUET/tmp/c931d93fa11744589005c639379471ae/FLAG2137193f4 [2020-07-01 13:14:22,809 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_FzPUET/tmp/c931d93fa11744589005c639379471ae [2020-07-01 13:14:22,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 13:14:22,822 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 13:14:22,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 13:14:22,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 13:14:22,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 13:14:22,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:14:22" (1/1) ... [2020-07-01 13:14:22,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3e1607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:22, skipping insertion in model container [2020-07-01 13:14:22,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:14:22" (1/1) ... [2020-07-01 13:14:22,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 13:14:22,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 13:14:23,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:14:23,076 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 13:14:23,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:14:23,105 INFO L208 MainTranslator]: Completed translation [2020-07-01 13:14:23,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23 WrapperNode [2020-07-01 13:14:23,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 13:14:23,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 13:14:23,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 13:14:23,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 13:14:23,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 13:14:23,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 13:14:23,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 13:14:23,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 13:14:23,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 13:14:23,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 13:14:23,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 13:14:23,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 13:14:23,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:14:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 13:14:23,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 13:14:23,360 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 13:14:23,360 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-01 13:14:23,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:14:23 BoogieIcfgContainer [2020-07-01 13:14:23,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 13:14:23,364 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 13:14:23,365 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 13:14:23,367 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 13:14:23,367 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,379 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 13:14:23,381 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 13:14:23,382 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 13:14:23,382 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 13:14:23,383 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:14:23,384 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 13:14:23,385 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 13:14:23,385 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 13:14:23,399 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 13:14:23,406 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 13:14:23,411 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 13:14:23,413 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:14:23,431 INFO L100 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2020-07-01 13:14:23,433 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 13:14:23,435 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:14:23,435 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:14:23,435 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 13:14:23,435 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 13:14:23,436 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2020-07-01 13:14:23,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:14:23 BasicIcfg [2020-07-01 13:14:23,436 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 13:14:23,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 13:14:23,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 13:14:23,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 13:14:23,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 01:14:22" (1/4) ... [2020-07-01 13:14:23,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec38bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (2/4) ... [2020-07-01 13:14:23,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec38bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:14:23" (3/4) ... [2020-07-01 13:14:23,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec38bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:14:23" (4/4) ... [2020-07-01 13:14:23,445 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:14:23,456 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 13:14:23,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 13:14:23,476 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 13:14:23,499 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 13:14:23,499 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 13:14:23,499 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:14:23,499 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:14:23,499 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:14:23,499 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 13:14:23,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:14:23,500 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 13:14:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 13:14:23,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 13:14:23,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 13:14:23,576 INFO L271 CegarLoopResult]: At program point L19-2(lines 19 21) the Hoare annotation is: true [2020-07-01 13:14:23,577 INFO L271 CegarLoopResult]: At program point L17-2(lines 17 23) the Hoare annotation is: true [2020-07-01 13:14:23,577 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 13:14:23,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:14:23 BasicIcfg [2020-07-01 13:14:23,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 13:14:23,586 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 13:14:23,586 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 13:14:23,590 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 13:14:23,591 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,591 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 01:14:22" (1/5) ... [2020-07-01 13:14:23,592 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22b42883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,592 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,592 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (2/5) ... [2020-07-01 13:14:23,592 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22b42883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,592 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,593 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:14:23" (3/5) ... [2020-07-01 13:14:23,593 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22b42883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,593 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,593 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:14:23" (4/5) ... [2020-07-01 13:14:23,594 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@22b42883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,594 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,594 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:14:23" (5/5) ... [2020-07-01 13:14:23,595 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:14:23,625 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 13:14:23,625 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 13:14:23,625 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:14:23,625 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:14:23,625 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:14:23,626 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 13:14:23,626 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:14:23,626 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 13:14:23,629 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 13:14:23,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 13:14:23,646 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:14:23,646 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:14:23,652 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 13:14:23,652 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 13:14:23,652 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 13:14:23,652 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 13:14:23,653 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 13:14:23,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:14:23,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:14:23,653 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 13:14:23,653 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 13:14:23,658 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [34] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 v_ULTIMATE.start_main_~N~0_1) (= v_ULTIMATE.start_main_~N~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_1, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0] 3#L17-2true [2020-07-01 13:14:23,659 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true [33] L17-2-->L19-2: Formula: (and (< 0 v_ULTIMATE.start_main_~i~0_9) (= v_ULTIMATE.start_main_~j~0_7 v_ULTIMATE.start_main_~N~0_6)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 5#L19-2true [45] L19-2-->L17-2: Formula: (and (<= v_ULTIMATE.start_main_~j~0_8 0) (= (+ v_ULTIMATE.start_main_~i~0_12 (- 1)) v_ULTIMATE.start_main_~i~0_11)) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_12} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_8, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_11} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 3#L17-2true [2020-07-01 13:14:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:23,665 INFO L82 PathProgramCache]: Analyzing trace with hash 65, now seen corresponding path program 1 times [2020-07-01 13:14:23,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:23,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692972660] [2020-07-01 13:14:23,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,747 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:23,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:23,749 INFO L82 PathProgramCache]: Analyzing trace with hash 2029, now seen corresponding path program 1 times [2020-07-01 13:14:23,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:23,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472467788] [2020-07-01 13:14:23,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,763 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:23,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:23,765 INFO L82 PathProgramCache]: Analyzing trace with hash 63533, now seen corresponding path program 1 times [2020-07-01 13:14:23,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:23,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937569820] [2020-07-01 13:14:23,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:23,839 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 13:14:23,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937569820] [2020-07-01 13:14:23,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:14:23,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 13:14:23,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137401821] [2020-07-01 13:14:23,884 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:23,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:23,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:23,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:23,886 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:14:23,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:23,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:23,886 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:23,886 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:14:23,887 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:23,887 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:23,906 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 13:14:23,915 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 13:14:23,920 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 13:14:23,928 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 13:14:24,027 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:24,028 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:24,045 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:14:24,045 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:24,084 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:14:24,084 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,118 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:14:24,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:24,191 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:14:24,193 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:24,193 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:24,193 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:24,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:24,194 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:14:24,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:24,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:24,194 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:14:24,194 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:24,195 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:24,197 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 13:14:24,205 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 13:14:24,213 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 13:14:24,217 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 13:14:24,301 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:24,307 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,312 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 13:14:24,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:14:24,315 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:14:24,315 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:14:24,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:14:24,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:14:24,319 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:14:24,319 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:14:24,322 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,359 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 13:14:24,361 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:14:24,361 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:14:24,361 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:14:24,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:14:24,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:14:24,363 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:14:24,363 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:14:24,367 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:14:24,371 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 13:14:24,371 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-07-01 13:14:24,382 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:14:24,383 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:14:24,383 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,384 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 13:14:24,419 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:14:24,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:24,461 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:14:24,462 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:24,475 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 13:14:24,476 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:24,490 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 13:14:24,519 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2020-07-01 13:14:24,524 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 13:14:24,526 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 13:14:24,551 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 6 states and 9 transitions. Complement of second has 4 states. [2020-07-01 13:14:24,552 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 13:14:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 13:14:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-07-01 13:14:24,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 13:14:24,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:24,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 13:14:24,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:24,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 13:14:24,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:24,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 9 transitions. [2020-07-01 13:14:24,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 13:14:24,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 9 transitions. [2020-07-01 13:14:24,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-07-01 13:14:24,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-07-01 13:14:24,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 9 transitions. [2020-07-01 13:14:24,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:14:24,572 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-07-01 13:14:24,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 9 transitions. [2020-07-01 13:14:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2020-07-01 13:14:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 13:14:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-07-01 13:14:24,600 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2020-07-01 13:14:24,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:14:24,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 13:14:24,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 13:14:24,604 INFO L87 Difference]: Start difference. First operand 5 states and 8 transitions. Second operand 4 states. [2020-07-01 13:14:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:14:24,637 INFO L93 Difference]: Finished difference Result 9 states and 13 transitions. [2020-07-01 13:14:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 13:14:24,639 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 13 transitions. [2020-07-01 13:14:24,640 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-07-01 13:14:24,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 13 transitions. [2020-07-01 13:14:24,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-07-01 13:14:24,641 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 13:14:24,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-07-01 13:14:24,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:14:24,642 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-07-01 13:14:24,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-07-01 13:14:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-07-01 13:14:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-01 13:14:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-07-01 13:14:24,643 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-07-01 13:14:24,643 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-07-01 13:14:24,643 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 13:14:24,644 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-07-01 13:14:24,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 13:14:24,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:14:24,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:14:24,645 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:14:24,645 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 13:14:24,645 INFO L794 eck$LassoCheckResult]: Stem: 65#ULTIMATE.startENTRY [34] ULTIMATE.startENTRY-->L17-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 v_ULTIMATE.start_main_~N~0_1) (= v_ULTIMATE.start_main_~N~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_1, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_~j~0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~N~0] 60#L17-2 [33] L17-2-->L19-2: Formula: (and (< 0 v_ULTIMATE.start_main_~i~0_9) (= v_ULTIMATE.start_main_~j~0_7 v_ULTIMATE.start_main_~N~0_6)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_9, ULTIMATE.start_main_~N~0=v_ULTIMATE.start_main_~N~0_6, ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 62#L19-2 [2020-07-01 13:14:24,645 INFO L796 eck$LassoCheckResult]: Loop: 62#L19-2 [38] L19-2-->L19-2: Formula: (and (= v_ULTIMATE.start_main_~j~0_5 (+ v_ULTIMATE.start_main_~j~0_6 (- 1))) (< 0 v_ULTIMATE.start_main_~j~0_6)) InVars {ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_6} OutVars{ULTIMATE.start_main_~j~0=v_ULTIMATE.start_main_~j~0_5} AuxVars[] AssignedVars[ULTIMATE.start_main_~j~0] 62#L19-2 [2020-07-01 13:14:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:24,646 INFO L82 PathProgramCache]: Analyzing trace with hash 2048, now seen corresponding path program 1 times [2020-07-01 13:14:24,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:24,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44544715] [2020-07-01 13:14:24,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,653 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:24,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2020-07-01 13:14:24,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:24,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656702796] [2020-07-01 13:14:24,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,660 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:24,661 INFO L82 PathProgramCache]: Analyzing trace with hash 63526, now seen corresponding path program 1 times [2020-07-01 13:14:24,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:24,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032901260] [2020-07-01 13:14:24,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,671 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:24,681 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:24,681 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:24,681 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:24,681 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:24,681 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:14:24,681 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,681 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:24,682 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:24,682 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 13:14:24,682 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:24,682 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:24,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,687 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 13:14:24,693 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 13:14:24,740 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:24,740 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:24,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:14:24,750 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 13:14:24,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,787 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:14:24,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:24,867 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:14:24,870 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:24,870 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:24,870 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:24,870 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:24,870 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:14:24,870 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,870 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:24,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:24,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 13:14:24,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:24,871 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:24,872 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 13:14:24,886 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 13:14:24,890 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 13:14:24,944 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:24,945 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,948 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 13:14:24,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:14:24,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:14:24,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:14:24,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:14:24,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:14:24,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:14:24,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:14:24,957 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:14:24,962 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 13:14:24,962 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,967 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:14:24,967 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:14:24,967 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:14:24,967 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-07-01 13:14:24,998 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:14:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,020 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 13:14:25,021 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,025 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 13:14:25,026 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:25,026 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 13:14:25,027 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 13:14:25,027 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-07-01 13:14:25,027 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-07-01 13:14:25,044 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 8 states and 11 transitions. Complement of second has 4 states. [2020-07-01 13:14:25,045 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 13:14:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-01 13:14:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-07-01 13:14:25,045 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 1 letters. [2020-07-01 13:14:25,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:25,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2020-07-01 13:14:25,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:25,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 2 letters. [2020-07-01 13:14:25,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:25,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 11 transitions. [2020-07-01 13:14:25,049 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:14:25,049 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2020-07-01 13:14:25,049 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 13:14:25,049 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 13:14:25,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 13:14:25,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 13:14:25,050 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:14:25,050 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:14:25,050 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:14:25,050 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 13:14:25,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 13:14:25,050 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:14:25,050 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 13:14:25,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:14:25 BasicIcfg [2020-07-01 13:14:25,056 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 13:14:25,059 INFO L168 Benchmark]: Toolchain (without parser) took 2236.28 ms. Allocated memory was 649.6 MB in the beginning and 686.3 MB in the end (delta: 36.7 MB). Free memory was 556.4 MB in the beginning and 465.5 MB in the end (delta: 90.9 MB). Peak memory consumption was 127.6 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:25,059 INFO L168 Benchmark]: CDTParser took 0.17 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 13:14:25,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.39 ms. Allocated memory was 649.6 MB in the beginning and 686.3 MB in the end (delta: 36.7 MB). Free memory was 556.4 MB in the beginning and 650.1 MB in the end (delta: -93.8 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:25,061 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.93 ms. Allocated memory is still 686.3 MB. Free memory was 650.1 MB in the beginning and 648.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:25,061 INFO L168 Benchmark]: Boogie Preprocessor took 19.18 ms. Allocated memory is still 686.3 MB. Free memory was 648.0 MB in the beginning and 646.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:25,062 INFO L168 Benchmark]: RCFGBuilder took 204.49 ms. Allocated memory is still 686.3 MB. Free memory was 646.9 MB in the beginning and 633.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:25,062 INFO L168 Benchmark]: BlockEncodingV2 took 72.13 ms. Allocated memory is still 686.3 MB. Free memory was 633.2 MB in the beginning and 627.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:25,063 INFO L168 Benchmark]: TraceAbstraction took 147.82 ms. Allocated memory is still 686.3 MB. Free memory was 626.7 MB in the beginning and 618.9 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:25,064 INFO L168 Benchmark]: BuchiAutomizer took 1470.33 ms. Allocated memory is still 686.3 MB. Free memory was 617.9 MB in the beginning and 465.5 MB in the end (delta: 152.3 MB). Peak memory consumption was 152.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:25,068 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 283.39 ms. Allocated memory was 649.6 MB in the beginning and 686.3 MB in the end (delta: 36.7 MB). Free memory was 556.4 MB in the beginning and 650.1 MB in the end (delta: -93.8 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 32.93 ms. Allocated memory is still 686.3 MB. Free memory was 650.1 MB in the beginning and 648.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.18 ms. Allocated memory is still 686.3 MB. Free memory was 648.0 MB in the beginning and 646.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 204.49 ms. Allocated memory is still 686.3 MB. Free memory was 646.9 MB in the beginning and 633.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 72.13 ms. Allocated memory is still 686.3 MB. Free memory was 633.2 MB in the beginning and 627.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 147.82 ms. Allocated memory is still 686.3 MB. Free memory was 626.7 MB in the beginning and 618.9 MB in the end (delta: 7.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 1470.33 ms. Allocated memory is still 686.3 MB. Free memory was 617.9 MB in the beginning and 465.5 MB in the end (delta: 152.3 MB). Peak memory consumption was 152.3 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function j and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 14 SDslu, 2 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax197 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 13:14:19.427 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_FzPUET/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 13:14:25.706 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check