/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:53:52,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:53:52,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:53:52,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:53:52,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:53:52,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:53:52,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:53:52,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:53:52,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:53:52,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:53:52,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:53:52,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:53:52,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:53:52,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:53:52,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:53:52,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:53:52,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:53:52,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:53:52,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:53:52,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:53:52,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:53:52,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:53:52,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:53:52,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:53:52,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:53:52,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:53:52,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:53:52,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:53:52,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:53:52,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:53:52,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:53:52,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:53:52,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:53:52,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:53:52,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:53:52,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:53:52,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:53:52,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:53:52,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:53:52,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:53:52,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:53:52,518 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:53:52,533 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:53:52,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:53:52,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:53:52,534 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:53:52,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:53:52,534 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:53:52,535 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:53:52,535 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:53:52,535 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:53:52,535 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:53:52,535 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:53:52,536 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:53:52,536 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:53:52,536 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:53:52,536 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:52,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:53:52,537 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:53:52,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:53:52,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:53:52,537 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:53:52,537 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:53:52,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:53:52,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:53:52,538 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:53:52,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:53:52,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:53:52,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:53:52,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:53:52,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:53:52,702 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:53:52,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:53:52,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:53:52,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:53:52,720 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:53:52,721 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:53:52,779 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_tKtlMK/tmp/9b95a5b34ba647f8b304594d36eecd78/FLAGf0c44312d [2020-07-01 11:53:53,111 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:53:53,112 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:53:53,118 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_tKtlMK/tmp/9b95a5b34ba647f8b304594d36eecd78/FLAGf0c44312d [2020-07-01 11:53:53,518 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_tKtlMK/tmp/9b95a5b34ba647f8b304594d36eecd78 [2020-07-01 11:53:53,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:53:53,531 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:53:53,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:53:53,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:53:53,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:53:53,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7547084d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53, skipping insertion in model container [2020-07-01 11:53:53,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:53:53,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:53:53,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:53:53,804 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:53:53,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:53:53,834 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:53:53,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53 WrapperNode [2020-07-01 11:53:53,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:53:53,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:53:53,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:53:53,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:53:53,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:53:53,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:53:53,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:53:53,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:53:53,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... [2020-07-01 11:53:53,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:53:53,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:53:53,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:53:53,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:53:53,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:53:53,962 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-07-01 11:53:53,962 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-07-01 11:53:53,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:53:53,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:53:54,139 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:53:54,140 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-01 11:53:54,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:53:54 BoogieIcfgContainer [2020-07-01 11:53:54,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:53:54,144 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:53:54,144 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:53:54,147 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:53:54,148 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:53:54" (1/1) ... [2020-07-01 11:53:54,162 INFO L313 BlockEncoder]: Initial Icfg 16 locations, 22 edges [2020-07-01 11:53:54,164 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:53:54,165 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:53:54,165 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:53:54,166 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:53:54,167 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:53:54,168 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:53:54,168 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:53:54,184 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:53:54,198 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 11:53:54,203 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 11:53:54,204 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:53:54,213 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 11:53:54,215 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 11:53:54,217 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:53:54,217 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:53:54,219 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:53:54,220 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:53:54,220 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:53:54,220 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:53:54,220 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:53:54,221 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:53:54,221 INFO L313 BlockEncoder]: Encoded RCFG 11 locations, 15 edges [2020-07-01 11:53:54,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:53:54 BasicIcfg [2020-07-01 11:53:54,222 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:53:54,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:53:54,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:53:54,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:53:54,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:53:53" (1/4) ... [2020-07-01 11:53:54,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e750e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:53:54, skipping insertion in model container [2020-07-01 11:53:54,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (2/4) ... [2020-07-01 11:53:54,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e750e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:53:54, skipping insertion in model container [2020-07-01 11:53:54,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:53:54" (3/4) ... [2020-07-01 11:53:54,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e750e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:53:54, skipping insertion in model container [2020-07-01 11:53:54,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:53:54" (4/4) ... [2020-07-01 11:53:54,230 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:53:54,241 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:53:54,248 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:53:54,263 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:53:54,289 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:53:54,289 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:53:54,289 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:53:54,289 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:53:54,290 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:53:54,290 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:53:54,290 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:53:54,290 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:53:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-07-01 11:53:54,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:53:54,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-07-01 11:53:54,382 INFO L271 CegarLoopResult]: At program point recENTRY(lines 4 14) the Hoare annotation is: true [2020-07-01 11:53:54,382 INFO L268 CegarLoopResult]: For program point recFINAL(lines 4 14) no Hoare annotation was computed. [2020-07-01 11:53:54,383 INFO L271 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-07-01 11:53:54,383 INFO L268 CegarLoopResult]: For program point recEXIT(lines 4 14) no Hoare annotation was computed. [2020-07-01 11:53:54,383 INFO L271 CegarLoopResult]: At program point L10-2(lines 10 11) the Hoare annotation is: true [2020-07-01 11:53:54,383 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-07-01 11:53:54,383 INFO L268 CegarLoopResult]: For program point L5(lines 5 13) no Hoare annotation was computed. [2020-07-01 11:53:54,383 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:53:54,384 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-07-01 11:53:54,384 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-07-01 11:53:54,384 INFO L271 CegarLoopResult]: At program point L21-2(lines 21 22) the Hoare annotation is: true [2020-07-01 11:53:54,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:53:54 BasicIcfg [2020-07-01 11:53:54,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:53:54,395 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:53:54,395 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:53:54,398 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:53:54,399 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:53:54,400 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:53:53" (1/5) ... [2020-07-01 11:53:54,400 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f75ebf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:53:54, skipping insertion in model container [2020-07-01 11:53:54,400 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:53:54,400 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:53:53" (2/5) ... [2020-07-01 11:53:54,401 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f75ebf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:53:54, skipping insertion in model container [2020-07-01 11:53:54,401 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:53:54,401 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:53:54" (3/5) ... [2020-07-01 11:53:54,402 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f75ebf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:53:54, skipping insertion in model container [2020-07-01 11:53:54,402 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:53:54,402 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:53:54" (4/5) ... [2020-07-01 11:53:54,402 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f75ebf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:53:54, skipping insertion in model container [2020-07-01 11:53:54,402 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:53:54,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:53:54" (5/5) ... [2020-07-01 11:53:54,404 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:53:54,432 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:53:54,432 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:53:54,432 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:53:54,432 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:53:54,432 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:53:54,433 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:53:54,433 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:53:54,433 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:53:54,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-07-01 11:53:54,457 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2020-07-01 11:53:54,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:53:54,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:53:54,464 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:53:54,464 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:53:54,464 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:53:54,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-07-01 11:53:54,466 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2020-07-01 11:53:54,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:53:54,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:53:54,467 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 11:53:54,467 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:53:54,472 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 13#L20true [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 3#recENTRYtrue [2020-07-01 11:53:54,472 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 10#L5true [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 5#L8true [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 3#recENTRYtrue [2020-07-01 11:53:54,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:54,479 INFO L82 PathProgramCache]: Analyzing trace with hash 3437, now seen corresponding path program 1 times [2020-07-01 11:53:54,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:54,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169156534] [2020-07-01 11:53:54,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:54,563 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:54,564 INFO L82 PathProgramCache]: Analyzing trace with hash 78273, now seen corresponding path program 1 times [2020-07-01 11:53:54,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:54,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188332003] [2020-07-01 11:53:54,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:54,574 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:54,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:54,576 INFO L82 PathProgramCache]: Analyzing trace with hash 102440149, now seen corresponding path program 1 times [2020-07-01 11:53:54,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:54,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149174139] [2020-07-01 11:53:54,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:54,589 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:54,665 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:53:54,665 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:53:54,666 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:53:54,666 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:53:54,666 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:53:54,666 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:54,666 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:53:54,666 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:53:54,667 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:53:54,667 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:53:54,667 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:53:54,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:54,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:54,693 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 11:53:54,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:54,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:54,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:54,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:54,781 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:53:54,782 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:54,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:54,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:54,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:54,800 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:54,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:54,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:54,840 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:54,840 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:54,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:54,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:54,878 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:54,878 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:54,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:54,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:54,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:54,916 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:54,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:54,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:54,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:54,954 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:54,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:54,990 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:55,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:53:55,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:55,068 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:53:55,073 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:53:55,073 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:53:55,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:53:55,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:53:55,073 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:53:55,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:53:55,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:53:55,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:53:55,074 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:53:55,074 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:53:55,074 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:53:55,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,105 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 11:53:55,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,183 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:53:55,189 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:53:55,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:53:55,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:53:55,197 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:53:55,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:53:55,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:53:55,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:53:55,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:53:55,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:53:55,206 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 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:53:55,240 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:53:55,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:53:55,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:53:55,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:53:55,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:53:55,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:53:55,244 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:53:55,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:53:55,247 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 11 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:53:55,282 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:53:55,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:53:55,284 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:53:55,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:53:55,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:53:55,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:53:55,286 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:53:55,286 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:53:55,292 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 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 11:53:55,326 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:53:55,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:53:55,328 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:53:55,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:53:55,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:53:55,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:53:55,329 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:53:55,330 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:53:55,332 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:53:55,365 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:53:55,367 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:53:55,367 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:53:55,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:53:55,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:53:55,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:53:55,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:53:55,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:53:55,372 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:53:55,376 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 11:53:55,376 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/sandbox2/solver/bin/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:53:55,382 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:53:55,382 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:53:55,383 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:53:55,383 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [] [2020-07-01 11:53:55,417 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:53:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:55,457 INFO L264 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:53:55,459 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:53:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:55,479 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 11:53:55,480 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:53:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:53:55,525 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 11:53:55,531 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 11:53:55,532 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 11 states. Second operand 4 states. [2020-07-01 11:53:55,683 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 11 states.. Second operand 4 states. Result 66 states and 101 transitions. Complement of second has 24 states. [2020-07-01 11:53:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-07-01 11:53:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 11:53:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 30 transitions. [2020-07-01 11:53:55,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 30 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-01 11:53:55,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:53:55,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 30 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-01 11:53:55,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:53:55,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 30 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-01 11:53:55,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:53:55,701 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 101 transitions. [2020-07-01 11:53:55,708 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 8 [2020-07-01 11:53:55,717 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 45 states and 74 transitions. [2020-07-01 11:53:55,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-07-01 11:53:55,719 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2020-07-01 11:53:55,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 74 transitions. [2020-07-01 11:53:55,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:53:55,720 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-07-01 11:53:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 74 transitions. [2020-07-01 11:53:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2020-07-01 11:53:55,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-01 11:53:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 56 transitions. [2020-07-01 11:53:55,759 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 56 transitions. [2020-07-01 11:53:55,759 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 56 transitions. [2020-07-01 11:53:55,759 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:53:55,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 56 transitions. [2020-07-01 11:53:55,761 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 8 [2020-07-01 11:53:55,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:53:55,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:53:55,762 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 11:53:55,762 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:53:55,762 INFO L794 eck$LassoCheckResult]: Stem: 155#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 148#L20 [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 164#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 167#L5 [75] L5-->L8: Formula: (> 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 143#L8 [2020-07-01 11:53:55,762 INFO L796 eck$LassoCheckResult]: Loop: 143#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 142#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 144#L5 [75] L5-->L8: Formula: (> 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 143#L8 [2020-07-01 11:53:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash 3304520, now seen corresponding path program 1 times [2020-07-01 11:53:55,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:55,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229273251] [2020-07-01 11:53:55,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:53:55,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229273251] [2020-07-01 11:53:55,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:53:55,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 11:53:55,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272959030] [2020-07-01 11:53:55,822 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 11:53:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash 89014, now seen corresponding path program 1 times [2020-07-01 11:53:55,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:55,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487916104] [2020-07-01 11:53:55,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:55,831 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:55,870 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:53:55,871 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:53:55,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:53:55,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:53:55,871 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:53:55,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:55,871 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:53:55,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:53:55,872 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 11:53:55,872 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:53:55,872 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:53:55,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,890 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 11:53:55,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:55,943 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:53:55,943 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:55,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:55,948 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:55,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:53:55,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,207 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,207 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0, rec_#in~a=0} Honda state: {rec_~a=0, rec_#in~a=0} Generalized eigenvectors: [{rec_~a=0, rec_#in~a=0}, {rec_~a=-1, rec_#in~a=0}, {rec_~a=0, rec_#in~a=-1}] Lambdas: [11, 1, 0] Nus: [0, 1] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,246 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,246 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,280 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,284 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,284 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,321 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,322 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,359 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,397 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,397 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 11:53:56,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:53:56,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 11:53:56,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-01 11:53:56,431 INFO L87 Difference]: Start difference. First operand 37 states and 56 transitions. cyclomatic complexity: 26 Second operand 5 states. [2020-07-01 11:53:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:53:56,477 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2020-07-01 11:53:56,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-01 11:53:56,480 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2020-07-01 11:53:56,483 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 10 [2020-07-01 11:53:56,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 46 states and 68 transitions. [2020-07-01 11:53:56,485 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2020-07-01 11:53:56,486 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2020-07-01 11:53:56,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 68 transitions. [2020-07-01 11:53:56,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:53:56,486 INFO L688 BuchiCegarLoop]: Abstraction has 46 states and 68 transitions. [2020-07-01 11:53:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 68 transitions. [2020-07-01 11:53:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-07-01 11:53:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-01 11:53:56,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2020-07-01 11:53:56,493 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2020-07-01 11:53:56,493 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2020-07-01 11:53:56,493 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:53:56,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2020-07-01 11:53:56,495 INFO L131 ngComponentsAnalysis]: Automaton has 7 accepting balls. 9 [2020-07-01 11:53:56,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:53:56,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:53:56,495 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-07-01 11:53:56,496 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 11:53:56,496 INFO L794 eck$LassoCheckResult]: Stem: 250#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 237#L20 [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 236#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 238#L5 [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 244#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 247#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 255#L5 [75] L5-->L8: Formula: (> 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 242#L8 [2020-07-01 11:53:56,496 INFO L796 eck$LassoCheckResult]: Loop: 242#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 246#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 260#L5 [75] L5-->L8: Formula: (> 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 242#L8 [2020-07-01 11:53:56,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash -339263056, now seen corresponding path program 1 times [2020-07-01 11:53:56,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:56,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146627258] [2020-07-01 11:53:56,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:53:56,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146627258] [2020-07-01 11:53:56,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:53:56,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 11:53:56,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185195330] [2020-07-01 11:53:56,525 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 11:53:56,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:56,525 INFO L82 PathProgramCache]: Analyzing trace with hash 89014, now seen corresponding path program 2 times [2020-07-01 11:53:56,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:56,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26906822] [2020-07-01 11:53:56,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:56,532 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:56,571 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:53:56,571 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:53:56,571 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:53:56,571 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:53:56,572 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:53:56,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:53:56,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:53:56,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 11:53:56,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:53:56,572 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:53:56,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:56,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:56,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:56,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:56,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:56,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:56,636 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:53:56,636 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,644 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,644 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,681 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,682 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,715 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:53:56,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,918 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,918 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=-6, rec_#in~a=-6} Honda state: {rec_~a=-6, rec_#in~a=-6} Generalized eigenvectors: [{rec_~a=0, rec_#in~a=0}, {rec_~a=0, rec_#in~a=0}, {rec_~a=-1, rec_#in~a=-1}] Lambdas: [15, 7, 1] Nus: [0, 0] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,956 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,956 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:56,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:56,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:56,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:56,993 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:57,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:57,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:57,030 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:53:57,031 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2020-07-01 11:53:57,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:53:57,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 11:53:57,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-01 11:53:57,060 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 27 Second operand 5 states. [2020-07-01 11:53:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:53:57,106 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2020-07-01 11:53:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-01 11:53:57,108 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2020-07-01 11:53:57,109 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2020-07-01 11:53:57,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 26 transitions. [2020-07-01 11:53:57,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-07-01 11:53:57,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-07-01 11:53:57,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 26 transitions. [2020-07-01 11:53:57,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:53:57,111 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2020-07-01 11:53:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 26 transitions. [2020-07-01 11:53:57,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-07-01 11:53:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-01 11:53:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-07-01 11:53:57,113 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-07-01 11:53:57,113 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-07-01 11:53:57,113 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:53:57,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 23 transitions. [2020-07-01 11:53:57,114 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 3 [2020-07-01 11:53:57,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:53:57,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:53:57,115 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 11:53:57,116 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:53:57,116 INFO L794 eck$LassoCheckResult]: Stem: 320#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 311#L20 [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 310#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 312#L5 [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 314#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 313#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 317#L5 [52] L5-->recFINAL: Formula: (and (= 0 v_rec_~a_2) (= |v_rec_#res_1| 0)) InVars {rec_~a=v_rec_~a_2} OutVars{rec_~a=v_rec_~a_2, rec_#res=|v_rec_#res_1|} AuxVars[] AssignedVars[rec_#res] 319#recFINAL [66] recFINAL-->recEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 322#recEXIT >[68] recEXIT-->L8-1: AOR: Formula: (= |v_rec_#t~ret0_4| |v_rec_#resOutParam_1|) InVars {rec_#res=|v_rec_#resOutParam_1|} OutVars{rec_#t~ret0=|v_rec_#t~ret0_4|} AuxVars[] AssignedVars[rec_#t~ret0] LVA: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a] 323#L8-1 [64] L8-1-->L10-2: Formula: (and (= v_rec_~res~0_2 |v_rec_#t~ret0_3|) (= v_rec_~rescopy~0_1 v_rec_~res~0_2)) InVars {rec_#t~ret0=|v_rec_#t~ret0_3|} OutVars{rec_~rescopy~0=v_rec_~rescopy~0_1, rec_#t~ret0=|v_rec_#t~ret0_2|, rec_~res~0=v_rec_~res~0_2} AuxVars[] AssignedVars[rec_#t~ret0, rec_~rescopy~0, rec_~res~0] 328#L10-2 [2020-07-01 11:53:57,116 INFO L796 eck$LassoCheckResult]: Loop: 328#L10-2 [63] L10-2-->L10-2: Formula: (and (< 0 v_rec_~rescopy~0_4) (= (+ v_rec_~rescopy~0_3 1) v_rec_~rescopy~0_4)) InVars {rec_~rescopy~0=v_rec_~rescopy~0_4} OutVars{rec_~rescopy~0=v_rec_~rescopy~0_3, rec_#t~post1=|v_rec_#t~post1_1|} AuxVars[] AssignedVars[rec_~rescopy~0, rec_#t~post1] 328#L10-2 [2020-07-01 11:53:57,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,117 INFO L82 PathProgramCache]: Analyzing trace with hash -928273403, now seen corresponding path program 1 times [2020-07-01 11:53:57,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:57,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837738477] [2020-07-01 11:53:57,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,130 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:57,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,131 INFO L82 PathProgramCache]: Analyzing trace with hash 94, now seen corresponding path program 1 times [2020-07-01 11:53:57,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:57,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578097661] [2020-07-01 11:53:57,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,136 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1288295642, now seen corresponding path program 1 times [2020-07-01 11:53:57,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:57,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52879176] [2020-07-01 11:53:57,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 11:53:57,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52879176] [2020-07-01 11:53:57,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:53:57,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-01 11:53:57,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079508098] [2020-07-01 11:53:57,194 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:53:57,194 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:53:57,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:53:57,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:53:57,194 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:53:57,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:57,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:53:57,194 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:53:57,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:53:57,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:53:57,195 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:53:57,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:57,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:57,232 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:53:57,232 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:57,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:53:57,236 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:53:57,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:53:57,272 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:53:57,308 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:53:57,310 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:53:57,310 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:53:57,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:53:57,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:53:57,310 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:53:57,311 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:53:57,311 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:53:57,311 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:53:57,311 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 11:53:57,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:53:57,311 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:53:57,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:57,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:53:57,335 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:53:57,335 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:53:57,339 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:53:57,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:53:57,341 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:53:57,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:53:57,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:53:57,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:53:57,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:53:57,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:53:57,345 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:53:57,348 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:53:57,348 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/sandbox2/solver/bin/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:53:57,351 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:53:57,351 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:53:57,351 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:53:57,351 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2020-07-01 11:53:57,381 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:53:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,410 INFO L264 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-01 11:53:57,412 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:53:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,436 WARN L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:53:57,437 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:53:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:53:57,464 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:53:57,464 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2020-07-01 11:53:57,464 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 19 states and 23 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-07-01 11:53:57,510 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 19 states and 23 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 27 states and 36 transitions. Complement of second has 9 states. [2020-07-01 11:53:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:53:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:53:57,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-07-01 11:53:57,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 1 letters. [2020-07-01 11:53:57,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:53:57,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 1 letters. [2020-07-01 11:53:57,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:53:57,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 2 letters. [2020-07-01 11:53:57,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:53:57,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 36 transitions. [2020-07-01 11:53:57,515 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:53:57,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 30 transitions. [2020-07-01 11:53:57,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-07-01 11:53:57,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-07-01 11:53:57,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2020-07-01 11:53:57,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:53:57,517 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-07-01 11:53:57,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2020-07-01 11:53:57,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-07-01 11:53:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-01 11:53:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2020-07-01 11:53:57,519 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2020-07-01 11:53:57,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:53:57,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-01 11:53:57,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-01 11:53:57,520 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand 5 states. [2020-07-01 11:53:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:53:57,533 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2020-07-01 11:53:57,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-01 11:53:57,534 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2020-07-01 11:53:57,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:53:57,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 34 transitions. [2020-07-01 11:53:57,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2020-07-01 11:53:57,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-07-01 11:53:57,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 34 transitions. [2020-07-01 11:53:57,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:53:57,537 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-07-01 11:53:57,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 34 transitions. [2020-07-01 11:53:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-01 11:53:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-01 11:53:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-07-01 11:53:57,540 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-07-01 11:53:57,540 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-07-01 11:53:57,540 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:53:57,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2020-07-01 11:53:57,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:53:57,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:53:57,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:53:57,551 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 11:53:57,551 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:53:57,551 INFO L794 eck$LassoCheckResult]: Stem: 485#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 475#L20 [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 474#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 476#L5 [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 478#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 477#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 481#L5 [52] L5-->recFINAL: Formula: (and (= 0 v_rec_~a_2) (= |v_rec_#res_1| 0)) InVars {rec_~a=v_rec_~a_2} OutVars{rec_~a=v_rec_~a_2, rec_#res=|v_rec_#res_1|} AuxVars[] AssignedVars[rec_#res] 490#recFINAL [66] recFINAL-->recEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 487#recEXIT >[68] recEXIT-->L8-1: AOR: Formula: (= |v_rec_#t~ret0_4| |v_rec_#resOutParam_1|) InVars {rec_#res=|v_rec_#resOutParam_1|} OutVars{rec_#t~ret0=|v_rec_#t~ret0_4|} AuxVars[] AssignedVars[rec_#t~ret0] LVA: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a] 488#L8-1 [64] L8-1-->L10-2: Formula: (and (= v_rec_~res~0_2 |v_rec_#t~ret0_3|) (= v_rec_~rescopy~0_1 v_rec_~res~0_2)) InVars {rec_#t~ret0=|v_rec_#t~ret0_3|} OutVars{rec_~rescopy~0=v_rec_~rescopy~0_1, rec_#t~ret0=|v_rec_#t~ret0_2|, rec_~res~0=v_rec_~res~0_2} AuxVars[] AssignedVars[rec_#t~ret0, rec_~rescopy~0, rec_~res~0] 495#L10-2 [77] L10-2-->recFINAL: Formula: (and (<= v_rec_~rescopy~0_5 0) (= |v_rec_#res_3| (+ v_rec_~res~0_3 1))) InVars {rec_~rescopy~0=v_rec_~rescopy~0_5, rec_~res~0=v_rec_~res~0_3} OutVars{rec_#res=|v_rec_#res_3|, rec_~rescopy~0=v_rec_~rescopy~0_5, rec_~res~0=v_rec_~res~0_3} AuxVars[] AssignedVars[rec_#res] 494#recFINAL [66] recFINAL-->recEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 493#recEXIT >[69] recEXIT-->L20-1: AOR: Formula: (= |v_ULTIMATE.start_main_#t~ret3_5| |v_rec_#resOutParam_2|) InVars {rec_#res=|v_rec_#resOutParam_2|} OutVars{ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret3] LVA: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a] 491#L20-1 [54] L20-1-->L21-2: Formula: (= v_ULTIMATE.start_main_~res~1_4 |v_ULTIMATE.start_main_#t~ret3_4|) InVars {ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_4|} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_4, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~ret3] 492#L21-2 [2020-07-01 11:53:57,551 INFO L796 eck$LassoCheckResult]: Loop: 492#L21-2 [57] L21-2-->L21-2: Formula: (< v_ULTIMATE.start_main_~res~1_3 1) InVars {ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_3} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_3} AuxVars[] AssignedVars[] 492#L21-2 [2020-07-01 11:53:57,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,552 INFO L82 PathProgramCache]: Analyzing trace with hash -211803541, now seen corresponding path program 1 times [2020-07-01 11:53:57,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:57,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165158] [2020-07-01 11:53:57,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,577 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:57,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,577 INFO L82 PathProgramCache]: Analyzing trace with hash 88, now seen corresponding path program 1 times [2020-07-01 11:53:57,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:57,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082790436] [2020-07-01 11:53:57,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,583 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2024024878, now seen corresponding path program 1 times [2020-07-01 11:53:57,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:57,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265321040] [2020-07-01 11:53:57,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 11:53:57,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265321040] [2020-07-01 11:53:57,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:53:57,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-01 11:53:57,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997780777] [2020-07-01 11:53:57,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:53:57,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-01 11:53:57,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-01 11:53:57,670 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. cyclomatic complexity: 11 Second operand 8 states. [2020-07-01 11:53:57,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:53:57,707 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-07-01 11:53:57,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-01 11:53:57,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 46 transitions. [2020-07-01 11:53:57,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:53:57,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 31 states and 39 transitions. [2020-07-01 11:53:57,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2020-07-01 11:53:57,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-07-01 11:53:57,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 39 transitions. [2020-07-01 11:53:57,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:53:57,712 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-07-01 11:53:57,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 39 transitions. [2020-07-01 11:53:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-01 11:53:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-01 11:53:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2020-07-01 11:53:57,715 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-07-01 11:53:57,715 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-07-01 11:53:57,716 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 11:53:57,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 39 transitions. [2020-07-01 11:53:57,716 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:53:57,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:53:57,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:53:57,717 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-07-01 11:53:57,717 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:53:57,718 INFO L794 eck$LassoCheckResult]: Stem: 576#ULTIMATE.startENTRY [78] ULTIMATE.startENTRY-->L20: Formula: (< 0 v_ULTIMATE.start_main_~i~0_8) InVars {} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_5, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_5|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~ret3] 569#L20 [58] L20-->recENTRY: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a]< 568#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 570#L5 [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 572#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 571#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 574#L5 [74] L5-->L8: Formula: (< 0 v_rec_~a_3) InVars {rec_~a=v_rec_~a_3} OutVars{rec_~a=v_rec_~a_3} AuxVars[] AssignedVars[] 573#L8 [60] L8-->recENTRY: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a]< 571#recENTRY [48] recENTRY-->L5: Formula: (= v_rec_~a_1 |v_rec_#in~a_1|) InVars {rec_#in~a=|v_rec_#in~a_1|} OutVars{rec_~a=v_rec_~a_1, rec_#in~a=|v_rec_#in~a_1|} AuxVars[] AssignedVars[rec_~a] 575#L5 [52] L5-->recFINAL: Formula: (and (= 0 v_rec_~a_2) (= |v_rec_#res_1| 0)) InVars {rec_~a=v_rec_~a_2} OutVars{rec_~a=v_rec_~a_2, rec_#res=|v_rec_#res_1|} AuxVars[] AssignedVars[rec_#res] 583#recFINAL [66] recFINAL-->recEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 582#recEXIT >[68] recEXIT-->L8-1: AOR: Formula: (= |v_rec_#t~ret0_4| |v_rec_#resOutParam_1|) InVars {rec_#res=|v_rec_#resOutParam_1|} OutVars{rec_#t~ret0=|v_rec_#t~ret0_4|} AuxVars[] AssignedVars[rec_#t~ret0] LVA: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a] 581#L8-1 [64] L8-1-->L10-2: Formula: (and (= v_rec_~res~0_2 |v_rec_#t~ret0_3|) (= v_rec_~rescopy~0_1 v_rec_~res~0_2)) InVars {rec_#t~ret0=|v_rec_#t~ret0_3|} OutVars{rec_~rescopy~0=v_rec_~rescopy~0_1, rec_#t~ret0=|v_rec_#t~ret0_2|, rec_~res~0=v_rec_~res~0_2} AuxVars[] AssignedVars[rec_#t~ret0, rec_~rescopy~0, rec_~res~0] 577#L10-2 [77] L10-2-->recFINAL: Formula: (and (<= v_rec_~rescopy~0_5 0) (= |v_rec_#res_3| (+ v_rec_~res~0_3 1))) InVars {rec_~rescopy~0=v_rec_~rescopy~0_5, rec_~res~0=v_rec_~res~0_3} OutVars{rec_#res=|v_rec_#res_3|, rec_~rescopy~0=v_rec_~rescopy~0_5, rec_~res~0=v_rec_~res~0_3} AuxVars[] AssignedVars[rec_#res] 578#recFINAL [66] recFINAL-->recEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 596#recEXIT >[68] recEXIT-->L8-1: AOR: Formula: (= |v_rec_#t~ret0_4| |v_rec_#resOutParam_1|) InVars {rec_#res=|v_rec_#resOutParam_1|} OutVars{rec_#t~ret0=|v_rec_#t~ret0_4|} AuxVars[] AssignedVars[rec_#t~ret0] LVA: Formula: (= |v_rec_#in~aInParam_1| (+ v_rec_~a_5 (- 1))) InVars {rec_~a=v_rec_~a_5} OutVars{rec_#in~a=|v_rec_#in~aInParam_1|} AuxVars[] AssignedVars[rec_#in~a] 595#L8-1 [64] L8-1-->L10-2: Formula: (and (= v_rec_~res~0_2 |v_rec_#t~ret0_3|) (= v_rec_~rescopy~0_1 v_rec_~res~0_2)) InVars {rec_#t~ret0=|v_rec_#t~ret0_3|} OutVars{rec_~rescopy~0=v_rec_~rescopy~0_1, rec_#t~ret0=|v_rec_#t~ret0_2|, rec_~res~0=v_rec_~res~0_2} AuxVars[] AssignedVars[rec_#t~ret0, rec_~rescopy~0, rec_~res~0] 592#L10-2 [63] L10-2-->L10-2: Formula: (and (< 0 v_rec_~rescopy~0_4) (= (+ v_rec_~rescopy~0_3 1) v_rec_~rescopy~0_4)) InVars {rec_~rescopy~0=v_rec_~rescopy~0_4} OutVars{rec_~rescopy~0=v_rec_~rescopy~0_3, rec_#t~post1=|v_rec_#t~post1_1|} AuxVars[] AssignedVars[rec_~rescopy~0, rec_#t~post1] 589#L10-2 [77] L10-2-->recFINAL: Formula: (and (<= v_rec_~rescopy~0_5 0) (= |v_rec_#res_3| (+ v_rec_~res~0_3 1))) InVars {rec_~rescopy~0=v_rec_~rescopy~0_5, rec_~res~0=v_rec_~res~0_3} OutVars{rec_#res=|v_rec_#res_3|, rec_~rescopy~0=v_rec_~rescopy~0_5, rec_~res~0=v_rec_~res~0_3} AuxVars[] AssignedVars[rec_#res] 587#recFINAL [66] recFINAL-->recEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 586#recEXIT >[69] recEXIT-->L20-1: AOR: Formula: (= |v_ULTIMATE.start_main_#t~ret3_5| |v_rec_#resOutParam_2|) InVars {rec_#res=|v_rec_#resOutParam_2|} OutVars{ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~ret3] LVA: Formula: (= |v_rec_#in~aInParam_2| v_ULTIMATE.start_main_~i~0_7) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{rec_#in~a=|v_rec_#in~aInParam_2|} AuxVars[] AssignedVars[rec_#in~a] 584#L20-1 [54] L20-1-->L21-2: Formula: (= v_ULTIMATE.start_main_~res~1_4 |v_ULTIMATE.start_main_#t~ret3_4|) InVars {ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_4|} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_4, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_3|} AuxVars[] AssignedVars[ULTIMATE.start_main_~res~1, ULTIMATE.start_main_#t~ret3] 585#L21-2 [2020-07-01 11:53:57,718 INFO L796 eck$LassoCheckResult]: Loop: 585#L21-2 [57] L21-2-->L21-2: Formula: (< v_ULTIMATE.start_main_~res~1_3 1) InVars {ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_3} OutVars{ULTIMATE.start_main_~res~1=v_ULTIMATE.start_main_~res~1_3} AuxVars[] AssignedVars[] 585#L21-2 [2020-07-01 11:53:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1098229081, now seen corresponding path program 1 times [2020-07-01 11:53:57,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:57,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972418860] [2020-07-01 11:53:57,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,743 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,743 INFO L82 PathProgramCache]: Analyzing trace with hash 88, now seen corresponding path program 2 times [2020-07-01 11:53:57,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:57,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419326322] [2020-07-01 11:53:57,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:53:57,747 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:53:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:53:57,747 INFO L82 PathProgramCache]: Analyzing trace with hash 314636914, now seen corresponding path program 1 times [2020-07-01 11:53:57,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:53:57,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038038907] [2020-07-01 11:53:57,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:53:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-01 11:53:57,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038038907] [2020-07-01 11:53:57,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358862914] [2020-07-01 11:53:57,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:53:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:53:57,848 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-01 11:53:57,849 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:53:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-01 11:53:57,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-01 11:53:57,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 11 [2020-07-01 11:53:57,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380960658] [2020-07-01 11:53:57,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:53:57,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-01 11:53:57,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-07-01 11:53:57,908 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. cyclomatic complexity: 12 Second operand 11 states. [2020-07-01 11:53:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:53:57,963 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2020-07-01 11:53:57,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-01 11:53:57,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2020-07-01 11:53:57,966 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:53:57,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2020-07-01 11:53:57,967 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:53:57,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:53:57,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:53:57,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:53:57,967 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:53:57,967 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:53:57,967 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:53:57,967 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 11:53:57,967 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:53:57,967 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:53:57,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:53:57,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:53:57 BasicIcfg [2020-07-01 11:53:57,973 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:53:57,976 INFO L168 Benchmark]: Toolchain (without parser) took 4444.71 ms. Allocated memory was 514.9 MB in the beginning and 601.4 MB in the end (delta: 86.5 MB). Free memory was 436.4 MB in the beginning and 495.2 MB in the end (delta: -58.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:53:57,976 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 455.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:53:57,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.04 ms. Allocated memory was 514.9 MB in the beginning and 557.3 MB in the end (delta: 42.5 MB). Free memory was 436.4 MB in the beginning and 526.9 MB in the end (delta: -90.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:53:57,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.04 ms. Allocated memory is still 557.3 MB. Free memory was 526.9 MB in the beginning and 525.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:53:57,978 INFO L168 Benchmark]: Boogie Preprocessor took 20.86 ms. Allocated memory is still 557.3 MB. Free memory was 525.3 MB in the beginning and 523.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:53:57,978 INFO L168 Benchmark]: RCFGBuilder took 252.19 ms. Allocated memory is still 557.3 MB. Free memory was 523.6 MB in the beginning and 510.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. [2020-07-01 11:53:57,979 INFO L168 Benchmark]: BlockEncodingV2 took 77.90 ms. Allocated memory is still 557.3 MB. Free memory was 510.7 MB in the beginning and 504.6 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:53:57,979 INFO L168 Benchmark]: TraceAbstraction took 171.02 ms. Allocated memory is still 557.3 MB. Free memory was 503.8 MB in the beginning and 493.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:53:57,980 INFO L168 Benchmark]: BuchiAutomizer took 3578.77 ms. Allocated memory was 557.3 MB in the beginning and 601.4 MB in the end (delta: 44.0 MB). Free memory was 492.9 MB in the beginning and 495.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 41.8 MB. Max. memory is 50.3 GB. [2020-07-01 11:53:57,983 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 16 locations, 22 edges - StatisticsResult: Encoded RCFG 11 locations, 15 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 514.9 MB. Free memory is still 455.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 304.04 ms. Allocated memory was 514.9 MB in the beginning and 557.3 MB in the end (delta: 42.5 MB). Free memory was 436.4 MB in the beginning and 526.9 MB in the end (delta: -90.6 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.04 ms. Allocated memory is still 557.3 MB. Free memory was 526.9 MB in the beginning and 525.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 20.86 ms. Allocated memory is still 557.3 MB. Free memory was 525.3 MB in the beginning and 523.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. * RCFGBuilder took 252.19 ms. Allocated memory is still 557.3 MB. Free memory was 523.6 MB in the beginning and 510.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 77.90 ms. Allocated memory is still 557.3 MB. Free memory was 510.7 MB in the beginning and 504.6 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 171.02 ms. Allocated memory is still 557.3 MB. Free memory was 503.8 MB in the beginning and 493.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 3578.77 ms. Allocated memory was 557.3 MB in the beginning and 601.4 MB in the end (delta: 44.0 MB). Free memory was 492.9 MB in the beginning and 495.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 41.8 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 11 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=11occurred 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, 5 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 5 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (5 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function \old(a) and consists of 6 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 2.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 107 SDtfs, 87 SDslu, 270 SDs, 0 SdLazy, 182 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc2 concLT1 SILN2 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf92 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:53:49.254 ----------------------------------------------- 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_tKtlMK/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:53:58.416 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check