/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 13:14:21,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 13:14:21,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 13:14:21,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 13:14:21,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 13:14:21,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 13:14:21,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 13:14:21,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 13:14:21,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 13:14:21,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 13:14:21,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 13:14:21,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 13:14:21,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 13:14:21,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 13:14:21,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 13:14:21,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 13:14:21,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 13:14:21,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 13:14:21,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 13:14:21,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 13:14:21,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 13:14:21,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 13:14:21,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 13:14:21,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 13:14:21,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 13:14:21,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 13:14:21,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 13:14:21,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 13:14:21,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 13:14:21,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 13:14:21,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 13:14:21,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 13:14:21,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 13:14:21,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 13:14:21,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 13:14:21,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 13:14:21,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 13:14:21,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 13:14:21,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 13:14:21,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 13:14:21,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 13:14:21,826 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 13:14:21,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 13:14:21,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 13:14:21,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 13:14:21,843 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 13:14:21,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 13:14:21,843 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:14:21,843 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 13:14:21,843 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 13:14:21,843 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 13:14:21,844 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 13:14:21,844 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 13:14:21,844 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 13:14:21,844 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 13:14:21,844 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 13:14:21,844 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:21,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 13:14:21,845 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 13:14:21,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 13:14:21,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 13:14:21,845 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 13:14:21,846 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 13:14:21,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 13:14:21,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 13:14:21,846 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 13:14:21,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:14:21,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 13:14:21,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 13:14:21,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 13:14:21,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 13:14:22,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 13:14:22,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 13:14:22,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 13:14:22,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 13:14:22,036 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 13:14:22,037 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 13:14:22,104 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_lA3Oyk/tmp/9789fce99acf4921bf70088f8a9b11e1/FLAG25b3ba259 [2020-07-01 13:14:22,438 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 13:14:22,439 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 13:14:22,446 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_lA3Oyk/tmp/9789fce99acf4921bf70088f8a9b11e1/FLAG25b3ba259 [2020-07-01 13:14:22,851 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_lA3Oyk/tmp/9789fce99acf4921bf70088f8a9b11e1 [2020-07-01 13:14:22,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 13:14:22,863 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 13:14:22,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 13:14:22,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 13:14:22,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 13:14:22,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:14:22" (1/1) ... [2020-07-01 13:14:22,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ba3c7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:22, skipping insertion in model container [2020-07-01 13:14:22,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 01:14:22" (1/1) ... [2020-07-01 13:14:22,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 13:14:22,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 13:14:23,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:14:23,124 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 13:14:23,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 13:14:23,156 INFO L208 MainTranslator]: Completed translation [2020-07-01 13:14:23,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23 WrapperNode [2020-07-01 13:14:23,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 13:14:23,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 13:14:23,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 13:14:23,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 13:14:23,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 13:14:23,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 13:14:23,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 13:14:23,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 13:14:23,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 13:14:23,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 13:14:23,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 13:14:23,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 13:14:23,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 13:14:23,280 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2020-07-01 13:14:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2020-07-01 13:14:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2020-07-01 13:14:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2020-07-01 13:14:23,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 13:14:23,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 13:14:23,462 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 13:14:23,463 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-01 13:14:23,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:14:23 BoogieIcfgContainer [2020-07-01 13:14:23,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 13:14:23,467 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 13:14:23,467 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 13:14:23,470 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 13:14:23,471 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:14:23" (1/1) ... [2020-07-01 13:14:23,486 INFO L313 BlockEncoder]: Initial Icfg 21 locations, 26 edges [2020-07-01 13:14:23,487 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 13:14:23,488 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 13:14:23,488 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 13:14:23,489 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 13:14:23,490 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 13:14:23,491 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 13:14:23,491 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 13:14:23,505 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 13:14:23,512 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 13:14:23,517 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:14:23,519 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:14:23,531 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 13:14:23,533 INFO L70 RemoveSinkStates]: Removed 2 edges and 2 locations by removing sink states [2020-07-01 13:14:23,535 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 13:14:23,535 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 13:14:23,535 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 13:14:23,536 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 13:14:23,536 INFO L313 BlockEncoder]: Encoded RCFG 17 locations, 22 edges [2020-07-01 13:14:23,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:14:23 BasicIcfg [2020-07-01 13:14:23,537 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 13:14:23,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 13:14:23,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 13:14:23,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 13:14:23,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 01:14:22" (1/4) ... [2020-07-01 13:14:23,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8434e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (2/4) ... [2020-07-01 13:14:23,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8434e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:14:23" (3/4) ... [2020-07-01 13:14:23,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8434e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:14:23" (4/4) ... [2020-07-01 13:14:23,546 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:14:23,556 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 13:14:23,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 13:14:23,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 13:14:23,599 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 13:14:23,600 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 13:14:23,600 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:14:23,600 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:14:23,600 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:14:23,600 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 13:14:23,600 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:14:23,601 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 13:14:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-01 13:14:23,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 13:14:23,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 17 states. [2020-07-01 13:14:23,708 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-01 13:14:23,708 INFO L271 CegarLoopResult]: At program point rec1ENTRY(lines 11 15) the Hoare annotation is: true [2020-07-01 13:14:23,708 INFO L268 CegarLoopResult]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2020-07-01 13:14:23,709 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-01 13:14:23,709 INFO L268 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-07-01 13:14:23,709 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-01 13:14:23,709 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-07-01 13:14:23,709 INFO L268 CegarLoopResult]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2020-07-01 13:14:23,710 INFO L271 CegarLoopResult]: At program point rec2ENTRY(lines 17 21) the Hoare annotation is: true [2020-07-01 13:14:23,710 INFO L268 CegarLoopResult]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2020-07-01 13:14:23,710 INFO L268 CegarLoopResult]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2020-07-01 13:14:23,710 INFO L271 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-07-01 13:14:23,710 INFO L271 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-07-01 13:14:23,710 INFO L268 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-07-01 13:14:23,711 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-07-01 13:14:23,711 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 13:14:23,711 INFO L271 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-07-01 13:14:23,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:14:23 BasicIcfg [2020-07-01 13:14:23,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 13:14:23,716 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 13:14:23,716 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 13:14:23,720 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 13:14:23,721 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,721 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 01:14:22" (1/5) ... [2020-07-01 13:14:23,722 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d58dc28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,722 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,722 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 01:14:23" (2/5) ... [2020-07-01 13:14:23,722 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d58dc28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,722 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,723 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:14:23" (3/5) ... [2020-07-01 13:14:23,723 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d58dc28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,723 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,723 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 01:14:23" (4/5) ... [2020-07-01 13:14:23,724 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d58dc28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:14:23, skipping insertion in model container [2020-07-01 13:14:23,724 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 13:14:23,724 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 01:14:23" (5/5) ... [2020-07-01 13:14:23,725 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 13:14:23,753 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 13:14:23,754 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 13:14:23,754 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 13:14:23,754 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 13:14:23,754 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 13:14:23,754 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 13:14:23,754 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 13:14:23,755 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 13:14:23,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-07-01 13:14:23,779 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-07-01 13:14:23,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:14:23,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:14:23,786 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:14:23,786 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 13:14:23,786 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 13:14:23,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-07-01 13:14:23,789 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-07-01 13:14:23,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:14:23,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:14:23,789 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 13:14:23,789 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 13:14:23,794 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue [47] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet5_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~ret6=|v_ULTIMATE.start_main_#t~ret6_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet5_4|] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret6] 18#L25true [56] L25-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_2| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_2|} AuxVars[] AssignedVars[rec2_#in~j]< 3#rec2ENTRYtrue [2020-07-01 13:14:23,795 INFO L796 eck$LassoCheckResult]: Loop: 3#rec2ENTRYtrue [38] rec2ENTRY-->L18: Formula: (= v_rec2_~j_1 |v_rec2_#in~j_1|) InVars {rec2_#in~j=|v_rec2_#in~j_1|} OutVars{rec2_~j=v_rec2_~j_1, rec2_#in~j=|v_rec2_#in~j_1|} AuxVars[] AssignedVars[rec2_~j] 16#L18true [64] L18-->L20: Formula: (> v_rec2_~j_3 0) InVars {rec2_~j=v_rec2_~j_3} OutVars{rec2_~j=v_rec2_~j_3} AuxVars[] AssignedVars[] 15#L20true [50] L20-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_1| (+ v_rec2_~j_5 (- 1))) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_1|} AuxVars[] AssignedVars[rec2_#in~j]< 3#rec2ENTRYtrue [2020-07-01 13:14:23,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:23,802 INFO L82 PathProgramCache]: Analyzing trace with hash 2474, now seen corresponding path program 1 times [2020-07-01 13:14:23,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:23,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419755547] [2020-07-01 13:14:23,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,880 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:23,881 INFO L82 PathProgramCache]: Analyzing trace with hash 68343, now seen corresponding path program 1 times [2020-07-01 13:14:23,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:23,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600666091] [2020-07-01 13:14:23,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,898 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:23,900 INFO L82 PathProgramCache]: Analyzing trace with hash 73741486, now seen corresponding path program 1 times [2020-07-01 13:14:23,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:23,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526006019] [2020-07-01 13:14:23,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:23,911 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:23,988 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:23,988 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:24,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:24,003 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:24,004 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:14:24,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:24,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:24,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:14:24,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:24,005 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:24,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,100 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:24,101 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:24,115 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:14:24,116 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:24,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:14:24,153 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret3=0} Honda state: {rec2_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,186 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:24,189 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:14:24,190 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret4=0} Honda state: {rec2_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,222 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 13:14:24,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:14:24,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:24,297 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:14:24,299 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:24,299 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:24,300 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:24,300 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:24,300 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:14:24,300 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,300 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:24,300 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:24,300 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 13:14:24,300 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:24,301 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:24,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,356 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:24,362 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:14:24,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:14:24,369 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:14:24,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:14:24,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:14:24,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:14:24,373 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:14:24,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:14:24,376 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:14:24,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:14:24,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:14:24,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:14:24,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:14:24,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:14:24,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:14:24,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:14:24,416 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:14:24,421 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 13:14:24,422 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:24,426 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:14:24,426 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:14:24,427 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:14:24,427 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2020-07-01 13:14:24,461 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:14:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:24,516 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 13:14:24,517 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:24,537 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 13:14:24,538 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:14:24,597 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 13:14:24,602 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 13:14:24,604 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 17 states. Second operand 4 states. [2020-07-01 13:14:24,690 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 17 states.. Second operand 4 states. Result 36 states and 45 transitions. Complement of second has 16 states. [2020-07-01 13:14:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-07-01 13:14:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 13:14:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2020-07-01 13:14:24,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 2 letters. Loop has 3 letters. [2020-07-01 13:14:24,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:24,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2020-07-01 13:14:24,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:24,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 2 letters. Loop has 6 letters. [2020-07-01 13:14:24,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:24,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 45 transitions. [2020-07-01 13:14:24,711 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 13:14:24,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 25 states and 33 transitions. [2020-07-01 13:14:24,721 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2020-07-01 13:14:24,721 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-07-01 13:14:24,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 33 transitions. [2020-07-01 13:14:24,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:14:24,722 INFO L688 BuchiCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-07-01 13:14:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 33 transitions. [2020-07-01 13:14:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-07-01 13:14:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-01 13:14:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2020-07-01 13:14:24,758 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-07-01 13:14:24,758 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 31 transitions. [2020-07-01 13:14:24,758 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 13:14:24,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 31 transitions. [2020-07-01 13:14:24,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 13:14:24,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:14:24,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:14:24,761 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 13:14:24,761 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 13:14:24,762 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY [47] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet5_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~ret6=|v_ULTIMATE.start_main_#t~ret6_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet5_4|] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret6] 110#L25 [56] L25-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_2| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_2|} AuxVars[] AssignedVars[rec2_#in~j]< 109#rec2ENTRY [38] rec2ENTRY-->L18: Formula: (= v_rec2_~j_1 |v_rec2_#in~j_1|) InVars {rec2_#in~j=|v_rec2_#in~j_1|} OutVars{rec2_~j=v_rec2_~j_1, rec2_#in~j=|v_rec2_#in~j_1|} AuxVars[] AssignedVars[rec2_~j] 111#L18 [64] L18-->L20: Formula: (> v_rec2_~j_3 0) InVars {rec2_~j=v_rec2_~j_3} OutVars{rec2_~j=v_rec2_~j_3} AuxVars[] AssignedVars[] 114#L20 [50] L20-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_1| (+ v_rec2_~j_5 (- 1))) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_1|} AuxVars[] AssignedVars[rec2_#in~j]< 112#rec2ENTRY [38] rec2ENTRY-->L18: Formula: (= v_rec2_~j_1 |v_rec2_#in~j_1|) InVars {rec2_#in~j=|v_rec2_#in~j_1|} OutVars{rec2_~j=v_rec2_~j_1, rec2_#in~j=|v_rec2_#in~j_1|} AuxVars[] AssignedVars[rec2_~j] 116#L18 [53] L18-->rec2FINAL: Formula: (and (= |v_rec2_#res_2| 0) (<= v_rec2_~j_2 0)) InVars {rec2_~j=v_rec2_~j_2} OutVars{rec2_~j=v_rec2_~j_2, rec2_#res=|v_rec2_#res_2|} AuxVars[] AssignedVars[rec2_#res] 131#rec2FINAL [41] rec2FINAL-->rec2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 132#rec2EXIT >[62] rec2EXIT-->L20-1: AOR: Formula: (= |v_rec2_#t~ret3_4| |v_rec2_#resOutParam_1|) InVars {rec2_#res=|v_rec2_#resOutParam_1|} OutVars{rec2_#t~ret3=|v_rec2_#t~ret3_4|} AuxVars[] AssignedVars[rec2_#t~ret3] LVA: Formula: (= |v_rec2_#in~jInParam_1| (+ v_rec2_~j_5 (- 1))) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_1|} AuxVars[] AssignedVars[rec2_#in~j] 121#L20-1 [57] L20-1-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_4| |v_rec2_#t~ret3_5|) InVars {rec2_#t~ret3=|v_rec2_#t~ret3_5|} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_4|} AuxVars[] AssignedVars[rec1_#in~i]< 117#rec1ENTRY [2020-07-01 13:14:24,762 INFO L796 eck$LassoCheckResult]: Loop: 117#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 123#L12 [65] L12-->L14: Formula: (> v_rec1_~i_3 0) InVars {rec1_~i=v_rec1_~i_3} OutVars{rec1_~i=v_rec1_~i_3} AuxVars[] AssignedVars[] 122#L14 [48] L14-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_1| (+ v_rec1_~i_5 (- 2))) InVars {rec1_~i=v_rec1_~i_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_1|} AuxVars[] AssignedVars[rec1_#in~i]< 117#rec1ENTRY [2020-07-01 13:14:24,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:24,762 INFO L82 PathProgramCache]: Analyzing trace with hash -640237945, now seen corresponding path program 1 times [2020-07-01 13:14:24,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:24,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22022334] [2020-07-01 13:14:24,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,778 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:24,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:24,779 INFO L82 PathProgramCache]: Analyzing trace with hash 69333, now seen corresponding path program 1 times [2020-07-01 13:14:24,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:24,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045410293] [2020-07-01 13:14:24,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:24,789 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:24,789 INFO L82 PathProgramCache]: Analyzing trace with hash 621181583, now seen corresponding path program 1 times [2020-07-01 13:14:24,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:24,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668602709] [2020-07-01 13:14:24,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:24,879 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 13:14:24,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668602709] [2020-07-01 13:14:24,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 13:14:24,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-01 13:14:24,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755150812] [2020-07-01 13:14:24,919 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:24,919 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:24,919 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:24,919 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:24,919 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:14:24,919 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,919 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:24,920 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:24,920 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 13:14:24,920 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:24,920 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:24,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:24,977 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:24,977 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:24,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:24,981 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:25,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:14:25,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:25,096 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:14:25,100 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:25,101 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:25,101 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:25,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:25,102 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:14:25,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:25,102 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:25,102 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:25,102 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 13:14:25,102 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:25,102 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:25,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:25,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:25,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:25,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:25,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:25,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:25,174 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:25,174 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:25,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:14:25,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:14:25,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:14:25,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:14:25,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:14:25,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:14:25,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:14:25,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:14:25,184 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:14:25,187 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 13:14:25,187 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:25,189 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:14:25,190 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:14:25,190 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:14:25,190 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2020-07-01 13:14:25,220 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:14:25,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,278 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-01 13:14:25,280 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,340 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 13:14:25,341 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:14:25,413 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 13:14:25,413 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.3 stem predicates 3 loop predicates [2020-07-01 13:14:25,413 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 24 states and 31 transitions. cyclomatic complexity: 9 Second operand 5 states. [2020-07-01 13:14:25,573 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 24 states and 31 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 50 states and 65 transitions. Complement of second has 17 states. [2020-07-01 13:14:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-07-01 13:14:25,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 13:14:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2020-07-01 13:14:25,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 10 letters. Loop has 3 letters. [2020-07-01 13:14:25,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:25,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 13 letters. Loop has 3 letters. [2020-07-01 13:14:25,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:25,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 10 letters. Loop has 6 letters. [2020-07-01 13:14:25,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:25,578 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 65 transitions. [2020-07-01 13:14:25,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 13:14:25,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 39 states and 53 transitions. [2020-07-01 13:14:25,584 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-07-01 13:14:25,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-07-01 13:14:25,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 53 transitions. [2020-07-01 13:14:25,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:14:25,586 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-07-01 13:14:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 53 transitions. [2020-07-01 13:14:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-07-01 13:14:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-01 13:14:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2020-07-01 13:14:25,591 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2020-07-01 13:14:25,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:14:25,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-01 13:14:25,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-01 13:14:25,594 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand 6 states. [2020-07-01 13:14:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:14:25,643 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2020-07-01 13:14:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-01 13:14:25,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 56 transitions. [2020-07-01 13:14:25,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 13:14:25,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 53 transitions. [2020-07-01 13:14:25,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2020-07-01 13:14:25,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2020-07-01 13:14:25,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 53 transitions. [2020-07-01 13:14:25,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:14:25,651 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 53 transitions. [2020-07-01 13:14:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 53 transitions. [2020-07-01 13:14:25,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-07-01 13:14:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-01 13:14:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-07-01 13:14:25,657 INFO L711 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-07-01 13:14:25,657 INFO L591 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-07-01 13:14:25,657 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 13:14:25,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 52 transitions. [2020-07-01 13:14:25,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 13:14:25,659 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 13:14:25,659 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 13:14:25,660 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-01 13:14:25,660 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-07-01 13:14:25,661 INFO L794 eck$LassoCheckResult]: Stem: 382#ULTIMATE.startENTRY [47] ULTIMATE.startENTRY-->L25: Formula: (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet5_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet5=|v_ULTIMATE.start_main_#t~nondet5_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#t~ret6=|v_ULTIMATE.start_main_#t~ret6_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet5_4|] AssignedVars[ULTIMATE.start_main_#t~nondet5, ULTIMATE.start_main_#res, ULTIMATE.start_main_~x~0, ULTIMATE.start_main_#t~ret6] 354#L25 [56] L25-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_2| v_ULTIMATE.start_main_~x~0_5) InVars {ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_2|} AuxVars[] AssignedVars[rec2_#in~j]< 353#rec2ENTRY [38] rec2ENTRY-->L18: Formula: (= v_rec2_~j_1 |v_rec2_#in~j_1|) InVars {rec2_#in~j=|v_rec2_#in~j_1|} OutVars{rec2_~j=v_rec2_~j_1, rec2_#in~j=|v_rec2_#in~j_1|} AuxVars[] AssignedVars[rec2_~j] 355#L18 [64] L18-->L20: Formula: (> v_rec2_~j_3 0) InVars {rec2_~j=v_rec2_~j_3} OutVars{rec2_~j=v_rec2_~j_3} AuxVars[] AssignedVars[] 357#L20 [50] L20-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_1| (+ v_rec2_~j_5 (- 1))) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_1|} AuxVars[] AssignedVars[rec2_#in~j]< 356#rec2ENTRY [38] rec2ENTRY-->L18: Formula: (= v_rec2_~j_1 |v_rec2_#in~j_1|) InVars {rec2_#in~j=|v_rec2_#in~j_1|} OutVars{rec2_~j=v_rec2_~j_1, rec2_#in~j=|v_rec2_#in~j_1|} AuxVars[] AssignedVars[rec2_~j] 359#L18 [64] L18-->L20: Formula: (> v_rec2_~j_3 0) InVars {rec2_~j=v_rec2_~j_3} OutVars{rec2_~j=v_rec2_~j_3} AuxVars[] AssignedVars[] 358#L20 [50] L20-->rec2ENTRY: Formula: (= |v_rec2_#in~jInParam_1| (+ v_rec2_~j_5 (- 1))) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_1|} AuxVars[] AssignedVars[rec2_#in~j]< 356#rec2ENTRY [38] rec2ENTRY-->L18: Formula: (= v_rec2_~j_1 |v_rec2_#in~j_1|) InVars {rec2_#in~j=|v_rec2_#in~j_1|} OutVars{rec2_~j=v_rec2_~j_1, rec2_#in~j=|v_rec2_#in~j_1|} AuxVars[] AssignedVars[rec2_~j] 360#L18 [53] L18-->rec2FINAL: Formula: (and (= |v_rec2_#res_2| 0) (<= v_rec2_~j_2 0)) InVars {rec2_~j=v_rec2_~j_2} OutVars{rec2_~j=v_rec2_~j_2, rec2_#res=|v_rec2_#res_2|} AuxVars[] AssignedVars[rec2_#res] 383#rec2FINAL [41] rec2FINAL-->rec2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 392#rec2EXIT >[62] rec2EXIT-->L20-1: AOR: Formula: (= |v_rec2_#t~ret3_4| |v_rec2_#resOutParam_1|) InVars {rec2_#res=|v_rec2_#resOutParam_1|} OutVars{rec2_#t~ret3=|v_rec2_#t~ret3_4|} AuxVars[] AssignedVars[rec2_#t~ret3] LVA: Formula: (= |v_rec2_#in~jInParam_1| (+ v_rec2_~j_5 (- 1))) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_1|} AuxVars[] AssignedVars[rec2_#in~j] 362#L20-1 [57] L20-1-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_4| |v_rec2_#t~ret3_5|) InVars {rec2_#t~ret3=|v_rec2_#t~ret3_5|} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_4|} AuxVars[] AssignedVars[rec1_#in~i]< 361#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 363#L12 [44] L12-->rec1FINAL: Formula: (and (<= v_rec1_~i_2 0) (= |v_rec1_#res_1| 0)) InVars {rec1_~i=v_rec1_~i_2} OutVars{rec1_#res=|v_rec1_#res_1|, rec1_~i=v_rec1_~i_2} AuxVars[] AssignedVars[rec1_#res] 368#rec1FINAL [40] rec1FINAL-->rec1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 369#rec1EXIT >[61] rec1EXIT-->L20-2: AOR: Formula: (= |v_rec2_#t~ret4_4| |v_rec1_#resOutParam_4|) InVars {rec1_#res=|v_rec1_#resOutParam_4|} OutVars{rec2_#t~ret4=|v_rec2_#t~ret4_4|} AuxVars[] AssignedVars[rec2_#t~ret4] LVA: Formula: (= |v_rec1_#in~iInParam_4| |v_rec2_#t~ret3_5|) InVars {rec2_#t~ret3=|v_rec2_#t~ret3_5|} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_4|} AuxVars[] AssignedVars[rec1_#in~i] 381#L20-2 [55] L20-2-->rec2FINAL: Formula: (= |v_rec2_#res_1| (+ |v_rec2_#t~ret4_3| (- 1))) InVars {rec2_#t~ret4=|v_rec2_#t~ret4_3|} OutVars{rec2_#t~ret3=|v_rec2_#t~ret3_2|, rec2_#t~ret4=|v_rec2_#t~ret4_2|, rec2_#res=|v_rec2_#res_1|} AuxVars[] AssignedVars[rec2_#t~ret3, rec2_#t~ret4, rec2_#res] 370#rec2FINAL [41] rec2FINAL-->rec2EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 371#rec2EXIT >[62] rec2EXIT-->L20-1: AOR: Formula: (= |v_rec2_#t~ret3_4| |v_rec2_#resOutParam_1|) InVars {rec2_#res=|v_rec2_#resOutParam_1|} OutVars{rec2_#t~ret3=|v_rec2_#t~ret3_4|} AuxVars[] AssignedVars[rec2_#t~ret3] LVA: Formula: (= |v_rec2_#in~jInParam_1| (+ v_rec2_~j_5 (- 1))) InVars {rec2_~j=v_rec2_~j_5} OutVars{rec2_#in~j=|v_rec2_#in~jInParam_1|} AuxVars[] AssignedVars[rec2_#in~j] 373#L20-1 [57] L20-1-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_4| |v_rec2_#t~ret3_5|) InVars {rec2_#t~ret3=|v_rec2_#t~ret3_5|} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_4|} AuxVars[] AssignedVars[rec1_#in~i]< 385#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 366#L12 [65] L12-->L14: Formula: (> v_rec1_~i_3 0) InVars {rec1_~i=v_rec1_~i_3} OutVars{rec1_~i=v_rec1_~i_3} AuxVars[] AssignedVars[] 365#L14 [48] L14-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_1| (+ v_rec1_~i_5 (- 2))) InVars {rec1_~i=v_rec1_~i_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_1|} AuxVars[] AssignedVars[rec1_#in~i]< 364#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 367#L12 [44] L12-->rec1FINAL: Formula: (and (<= v_rec1_~i_2 0) (= |v_rec1_#res_1| 0)) InVars {rec1_~i=v_rec1_~i_2} OutVars{rec1_#res=|v_rec1_#res_1|, rec1_~i=v_rec1_~i_2} AuxVars[] AssignedVars[rec1_#res] 391#rec1FINAL [40] rec1FINAL-->rec1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 390#rec1EXIT >[59] rec1EXIT-->L14-1: AOR: Formula: (= |v_rec1_#t~ret0_4| |v_rec1_#resOutParam_1|) InVars {rec1_#res=|v_rec1_#resOutParam_1|} OutVars{rec1_#t~ret0=|v_rec1_#t~ret0_4|} AuxVars[] AssignedVars[rec1_#t~ret0] LVA: Formula: (= |v_rec1_#in~iInParam_1| (+ v_rec1_~i_5 (- 2))) InVars {rec1_~i=v_rec1_~i_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_1|} AuxVars[] AssignedVars[rec1_#in~i] 372#L14-1 [2020-07-01 13:14:25,661 INFO L796 eck$LassoCheckResult]: Loop: 372#L14-1 [42] L14-1-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_2| (+ |v_rec1_#t~ret0_5| (- 1))) InVars {rec1_#t~ret0=|v_rec1_#t~ret0_5|} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_2|} AuxVars[] AssignedVars[rec1_#in~i]< 377#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 387#L12 [65] L12-->L14: Formula: (> v_rec1_~i_3 0) InVars {rec1_~i=v_rec1_~i_3} OutVars{rec1_~i=v_rec1_~i_3} AuxVars[] AssignedVars[] 374#L14 [48] L14-->rec1ENTRY: Formula: (= |v_rec1_#in~iInParam_1| (+ v_rec1_~i_5 (- 2))) InVars {rec1_~i=v_rec1_~i_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_1|} AuxVars[] AssignedVars[rec1_#in~i]< 377#rec1ENTRY [39] rec1ENTRY-->L12: Formula: (= v_rec1_~i_1 |v_rec1_#in~i_1|) InVars {rec1_#in~i=|v_rec1_#in~i_1|} OutVars{rec1_#in~i=|v_rec1_#in~i_1|, rec1_~i=v_rec1_~i_1} AuxVars[] AssignedVars[rec1_~i] 387#L12 [44] L12-->rec1FINAL: Formula: (and (<= v_rec1_~i_2 0) (= |v_rec1_#res_1| 0)) InVars {rec1_~i=v_rec1_~i_2} OutVars{rec1_#res=|v_rec1_#res_1|, rec1_~i=v_rec1_~i_2} AuxVars[] AssignedVars[rec1_#res] 388#rec1FINAL [40] rec1FINAL-->rec1EXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 384#rec1EXIT >[59] rec1EXIT-->L14-1: AOR: Formula: (= |v_rec1_#t~ret0_4| |v_rec1_#resOutParam_1|) InVars {rec1_#res=|v_rec1_#resOutParam_1|} OutVars{rec1_#t~ret0=|v_rec1_#t~ret0_4|} AuxVars[] AssignedVars[rec1_#t~ret0] LVA: Formula: (= |v_rec1_#in~iInParam_1| (+ v_rec1_~i_5 (- 2))) InVars {rec1_~i=v_rec1_~i_5} OutVars{rec1_#in~i=|v_rec1_#in~iInParam_1|} AuxVars[] AssignedVars[rec1_#in~i] 372#L14-1 [2020-07-01 13:14:25,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:25,662 INFO L82 PathProgramCache]: Analyzing trace with hash 111914908, now seen corresponding path program 1 times [2020-07-01 13:14:25,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:25,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052005591] [2020-07-01 13:14:25,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-01 13:14:25,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052005591] [2020-07-01 13:14:25,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447688420] [2020-07-01 13:14:25,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 13:14:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:25,783 INFO L264 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 13:14:25,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-01 13:14:25,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-01 13:14:25,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 8 [2020-07-01 13:14:25,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892918481] [2020-07-01 13:14:25,796 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 13:14:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:25,796 INFO L82 PathProgramCache]: Analyzing trace with hash 535470021, now seen corresponding path program 1 times [2020-07-01 13:14:25,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 13:14:25,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587501996] [2020-07-01 13:14:25,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 13:14:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 13:14:25,807 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 13:14:25,884 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:25,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:25,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:25,885 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:25,885 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 13:14:25,885 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:25,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:25,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:25,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 13:14:25,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:25,886 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:25,887 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 13:14:25,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:25,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:25,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:25,941 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:25,942 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 13:14:25,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:25,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:25,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:14:25,949 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:25,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:25,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:25,985 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 13:14:25,985 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:26,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 13:14:26,017 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 13:14:26,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 13:14:26,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 13:14:27,454 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 13:14:27,456 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 13:14:27,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 13:14:27,457 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 13:14:27,457 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 13:14:27,457 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 13:14:27,457 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:27,457 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 13:14:27,457 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 13:14:27,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 13:14:27,458 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 13:14:27,458 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 13:14:27,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:27,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:27,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:27,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 13:14:27,537 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 13:14:27,538 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:27,540 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:14:27,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:14:27,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:14:27,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:14:27,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:14:27,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:14:27,543 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:14:27,543 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:14:27,545 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:27,577 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:14:27,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:14:27,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:14:27,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:14:27,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:14:27,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:14:27,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:14:27,580 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:14:27,582 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:27,614 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 13:14:27,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 13:14:27,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 13:14:27,616 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 13:14:27,616 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 13:14:27,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 13:14:27,618 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 13:14:27,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 13:14:27,622 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 13:14:27,627 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 13:14:27,627 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 13:14:27,629 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 13:14:27,630 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 13:14:27,630 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 13:14:27,630 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#t~ret0) = 1*rec1_#t~ret0 Supporting invariants [] [2020-07-01 13:14:27,660 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 13:14:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 13:14:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:27,708 INFO L264 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-01 13:14:27,711 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:27,735 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-01 13:14:27,741 INFO L477 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-01 13:14:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:27,765 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-01 13:14:27,766 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 13:14:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 13:14:27,868 INFO L264 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 13:14:27,870 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 13:14:27,916 INFO L98 LoopCannibalizer]: 6 predicates before loop cannibalization 10 predicates after loop cannibalization [2020-07-01 13:14:27,917 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 10 loop predicates [2020-07-01 13:14:27,917 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 41 states and 52 transitions. cyclomatic complexity: 14 Second operand 8 states. [2020-07-01 13:14:30,430 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 41 states and 52 transitions. cyclomatic complexity: 14. Second operand 8 states. Result 14035 states and 28402 transitions. Complement of second has 7492 states. [2020-07-01 13:14:30,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 23 states 2 stem states 18 non-accepting loop states 2 accepting loop states [2020-07-01 13:14:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-01 13:14:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 127 transitions. [2020-07-01 13:14:30,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 23 states and 127 transitions. Stem has 28 letters. Loop has 8 letters. [2020-07-01 13:14:30,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:30,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 23 states and 127 transitions. Stem has 36 letters. Loop has 8 letters. [2020-07-01 13:14:30,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:30,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 23 states and 127 transitions. Stem has 28 letters. Loop has 16 letters. [2020-07-01 13:14:30,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 13:14:30,441 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14035 states and 28402 transitions. [2020-07-01 13:14:30,915 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 62 [2020-07-01 13:14:30,927 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14035 states to 309 states and 484 transitions. [2020-07-01 13:14:30,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 266 [2020-07-01 13:14:30,928 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 281 [2020-07-01 13:14:30,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 309 states and 484 transitions. [2020-07-01 13:14:30,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 13:14:30,929 INFO L688 BuchiCegarLoop]: Abstraction has 309 states and 484 transitions. [2020-07-01 13:14:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states and 484 transitions. [2020-07-01 13:14:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 221. [2020-07-01 13:14:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-07-01 13:14:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 331 transitions. [2020-07-01 13:14:30,959 INFO L711 BuchiCegarLoop]: Abstraction has 221 states and 331 transitions. [2020-07-01 13:14:30,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 13:14:30,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-01 13:14:30,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-01 13:14:30,960 INFO L87 Difference]: Start difference. First operand 221 states and 331 transitions. Second operand 8 states. [2020-07-01 13:14:31,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 13:14:31,026 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-07-01 13:14:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-01 13:14:31,029 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 29 transitions. [2020-07-01 13:14:31,029 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:14:31,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2020-07-01 13:14:31,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 13:14:31,030 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 13:14:31,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 13:14:31,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 13:14:31,030 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:14:31,030 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:14:31,030 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 13:14:31,031 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 13:14:31,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 13:14:31,031 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 13:14:31,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 13:14:31,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 01:14:31 BasicIcfg [2020-07-01 13:14:31,038 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 13:14:31,041 INFO L168 Benchmark]: Toolchain (without parser) took 8176.42 ms. Allocated memory was 514.9 MB in the beginning and 820.0 MB in the end (delta: 305.1 MB). Free memory was 438.0 MB in the beginning and 562.8 MB in the end (delta: -124.9 MB). Peak memory consumption was 180.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:31,041 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.5 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 13:14:31,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.24 ms. Allocated memory was 514.9 MB in the beginning and 559.9 MB in the end (delta: 45.1 MB). Free memory was 438.0 MB in the beginning and 527.4 MB in the end (delta: -89.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:31,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.67 ms. Allocated memory is still 559.9 MB. Free memory was 527.4 MB in the beginning and 526.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:31,043 INFO L168 Benchmark]: Boogie Preprocessor took 17.41 ms. Allocated memory is still 559.9 MB. Free memory was 526.0 MB in the beginning and 524.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:31,043 INFO L168 Benchmark]: RCFGBuilder took 256.72 ms. Allocated memory is still 559.9 MB. Free memory was 524.7 MB in the beginning and 511.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:31,044 INFO L168 Benchmark]: BlockEncodingV2 took 69.82 ms. Allocated memory is still 559.9 MB. Free memory was 511.3 MB in the beginning and 506.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:31,044 INFO L168 Benchmark]: TraceAbstraction took 177.21 ms. Allocated memory is still 559.9 MB. Free memory was 505.9 MB in the beginning and 493.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:31,045 INFO L168 Benchmark]: BuchiAutomizer took 7322.28 ms. Allocated memory was 559.9 MB in the beginning and 820.0 MB in the end (delta: 260.0 MB). Free memory was 493.0 MB in the beginning and 562.8 MB in the end (delta: -69.8 MB). Peak memory consumption was 190.2 MB. Max. memory is 50.3 GB. [2020-07-01 13:14:31,048 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 21 locations, 26 edges - StatisticsResult: Encoded RCFG 17 locations, 22 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 514.9 MB. Free memory is still 458.5 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 292.24 ms. Allocated memory was 514.9 MB in the beginning and 559.9 MB in the end (delta: 45.1 MB). Free memory was 438.0 MB in the beginning and 527.4 MB in the end (delta: -89.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.67 ms. Allocated memory is still 559.9 MB. Free memory was 527.4 MB in the beginning and 526.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 17.41 ms. Allocated memory is still 559.9 MB. Free memory was 526.0 MB in the beginning and 524.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * RCFGBuilder took 256.72 ms. Allocated memory is still 559.9 MB. Free memory was 524.7 MB in the beginning and 511.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 69.82 ms. Allocated memory is still 559.9 MB. Free memory was 511.3 MB in the beginning and 506.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 177.21 ms. Allocated memory is still 559.9 MB. Free memory was 505.9 MB in the beginning and 493.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 7322.28 ms. Allocated memory was 559.9 MB in the beginning and 820.0 MB in the end (delta: 260.0 MB). Free memory was 493.0 MB in the beginning and 562.8 MB in the end (delta: -69.8 MB). Peak memory consumption was 190.2 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 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=17occurred 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, 8 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 8 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 0 deterministic, 3 nondeterministic). One nondeterministic module has affine ranking function \old(j) and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 6 locations. One nondeterministic module has affine ranking function org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a4725f9 and consists of 23 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.2s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 3.1s. Construction of modules took 0.3s. Büchi inclusion checks took 3.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 97 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.5s Buchi closure took 0.0s. Biggest automaton had 41 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 106 SDtfs, 135 SDslu, 324 SDs, 0 SdLazy, 350 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq161 hnf93 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 13:14:19.593 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_lA3Oyk/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 13:14:31.490 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check