/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 12:15:53,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:15:53,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:15:53,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:15:53,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:15:53,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:15:53,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:15:53,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:15:53,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:15:53,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:15:53,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:15:53,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:15:53,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:15:53,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:15:53,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:15:53,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:15:53,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:15:53,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:15:53,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:15:53,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:15:53,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:15:53,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:15:53,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:15:53,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:15:53,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:15:53,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:15:53,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:15:53,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:15:53,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:15:53,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:15:53,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:15:53,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:15:53,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:15:53,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:15:53,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:15:53,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:15:53,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:15:53,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:15:53,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:15:53,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:15:53,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:15:53,606 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:15:53,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:15:53,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:15:53,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:15:53,620 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:15:53,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:15:53,621 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:15:53,621 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:15:53,621 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:15:53,621 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:15:53,621 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:15:53,621 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:15:53,622 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:15:53,622 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:15:53,622 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:15:53,622 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:15:53,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:15:53,622 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:15:53,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:15:53,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:15:53,623 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:15:53,623 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:15:53,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:15:53,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:15:53,624 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:15:53,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:15:53,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:15:53,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:15:53,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:15:53,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:15:53,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:15:53,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:15:53,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:15:53,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:15:53,810 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:15:53,811 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:15:53,877 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_r6vk_y/tmp/3d5f97f3a19f4861880e9b6cc38c65ba/FLAG9a6891f72 [2020-07-01 12:15:54,209 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:15:54,210 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:15:54,216 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_r6vk_y/tmp/3d5f97f3a19f4861880e9b6cc38c65ba/FLAG9a6891f72 [2020-07-01 12:15:54,628 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_r6vk_y/tmp/3d5f97f3a19f4861880e9b6cc38c65ba [2020-07-01 12:15:54,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:15:54,641 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:15:54,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:15:54,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:15:54,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:15:54,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ed9874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54, skipping insertion in model container [2020-07-01 12:15:54,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:15:54,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:15:54,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:15:54,906 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:15:54,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:15:54,938 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:15:54,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54 WrapperNode [2020-07-01 12:15:54,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:15:54,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:15:54,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:15:54,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:15:54,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:15:54,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:15:54,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:15:54,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:15:54,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (1/1) ... [2020-07-01 12:15:54,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:15:54,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:15:54,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:15:54,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:15:54,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (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 12:15:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:15:55,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:15:55,240 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:15:55,240 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-01 12:15:55,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:15:55 BoogieIcfgContainer [2020-07-01 12:15:55,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:15:55,244 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:15:55,244 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:15:55,247 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:15:55,247 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:15:55" (1/1) ... [2020-07-01 12:15:55,260 INFO L313 BlockEncoder]: Initial Icfg 11 locations, 16 edges [2020-07-01 12:15:55,261 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:15:55,262 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:15:55,263 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:15:55,263 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:15:55,265 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:15:55,266 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:15:55,266 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:15:55,281 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:15:55,297 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 12:15:55,301 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-07-01 12:15:55,303 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:15:55,313 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 12:15:55,315 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 12:15:55,316 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:15:55,316 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:15:55,317 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:15:55,317 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:15:55,317 INFO L313 BlockEncoder]: Encoded RCFG 6 locations, 9 edges [2020-07-01 12:15:55,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:15:55 BasicIcfg [2020-07-01 12:15:55,318 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:15:55,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:15:55,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:15:55,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:15:55,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:15:54" (1/4) ... [2020-07-01 12:15:55,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652dca47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:15:55, skipping insertion in model container [2020-07-01 12:15:55,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (2/4) ... [2020-07-01 12:15:55,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652dca47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:15:55, skipping insertion in model container [2020-07-01 12:15:55,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:15:55" (3/4) ... [2020-07-01 12:15:55,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652dca47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:15:55, skipping insertion in model container [2020-07-01 12:15:55,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:15:55" (4/4) ... [2020-07-01 12:15:55,326 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:15:55,337 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:15:55,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:15:55,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:15:55,385 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:15:55,385 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:15:55,385 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:15:55,385 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:15:55,385 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:15:55,386 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:15:55,386 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:15:55,386 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:15:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-07-01 12:15:55,406 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:15:55,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-07-01 12:15:55,460 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:15:55,460 INFO L268 CegarLoopResult]: For program point L13-1(lines 4 20) no Hoare annotation was computed. [2020-07-01 12:15:55,461 INFO L268 CegarLoopResult]: For program point L9(lines 9 12) no Hoare annotation was computed. [2020-07-01 12:15:55,461 INFO L268 CegarLoopResult]: For program point L9-2(lines 4 20) no Hoare annotation was computed. [2020-07-01 12:15:55,461 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-01 12:15:55,461 INFO L271 CegarLoopResult]: At program point L4-2(lines 4 20) the Hoare annotation is: true [2020-07-01 12:15:55,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:15:55 BasicIcfg [2020-07-01 12:15:55,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:15:55,470 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:15:55,471 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:15:55,474 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:15:55,475 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:55,475 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:15:54" (1/5) ... [2020-07-01 12:15:55,475 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@628d3676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:15:55, skipping insertion in model container [2020-07-01 12:15:55,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:55,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:54" (2/5) ... [2020-07-01 12:15:55,476 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@628d3676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:15:55, skipping insertion in model container [2020-07-01 12:15:55,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:55,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:15:55" (3/5) ... [2020-07-01 12:15:55,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@628d3676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:15:55, skipping insertion in model container [2020-07-01 12:15:55,477 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:55,477 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:15:55" (4/5) ... [2020-07-01 12:15:55,478 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@628d3676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:15:55, skipping insertion in model container [2020-07-01 12:15:55,478 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:55,478 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:15:55" (5/5) ... [2020-07-01 12:15:55,479 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:15:55,506 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:15:55,506 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:15:55,506 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:15:55,507 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:15:55,507 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:15:55,507 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:15:55,507 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:15:55,507 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:15:55,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-01 12:15:55,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 12:15:55,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:15:55,528 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:15:55,533 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:15:55,533 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 12:15:55,533 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:15:55,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-07-01 12:15:55,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 12:15:55,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:15:55,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:15:55,535 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:15:55,535 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 12:15:55,540 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [45] ULTIMATE.startENTRY-->L4-2: Formula: (and (= v_ULTIMATE.start_fermat_~MAX~0_2 1000) (= v_ULTIMATE.start_fermat_~b~0_1 1) (= v_ULTIMATE.start_fermat_~c~0_2 1) (= v_ULTIMATE.start_fermat_~a~0_1 1)) InVars {} OutVars{ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_2, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_2, ULTIMATE.start_fermat_#res=|v_ULTIMATE.start_fermat_#res_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_fermat_#t~post2=|v_ULTIMATE.start_fermat_#t~post2_1|, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_1, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_1, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_1|, ULTIMATE.start_fermat_#t~post1=|v_ULTIMATE.start_fermat_#t~post1_1|, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_1|} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~c~0, ULTIMATE.start_fermat_~MAX~0, ULTIMATE.start_fermat_#res, ULTIMATE.start_main_#res, ULTIMATE.start_fermat_#t~post2, ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_~b~0, ULTIMATE.start_fermat_#t~post0, ULTIMATE.start_fermat_#t~post1, ULTIMATE.start_main_#t~ret3] 7#L4-2true [2020-07-01 12:15:55,541 INFO L796 eck$LassoCheckResult]: Loop: 7#L4-2true [53] L4-2-->L5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 3#L5true [62] L5-->L9: Formula: (and (< (* (* v_ULTIMATE.start_fermat_~a~0_6 v_ULTIMATE.start_fermat_~a~0_6) v_ULTIMATE.start_fermat_~a~0_6) (+ (* (* v_ULTIMATE.start_fermat_~b~0_5 v_ULTIMATE.start_fermat_~b~0_5) v_ULTIMATE.start_fermat_~b~0_5) (* (* v_ULTIMATE.start_fermat_~c~0_6 v_ULTIMATE.start_fermat_~c~0_6) v_ULTIMATE.start_fermat_~c~0_6))) (= (+ v_ULTIMATE.start_fermat_~a~0_6 1) v_ULTIMATE.start_fermat_~a~0_5)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_6, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_5, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_2|, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_#t~post0] 8#L9true [55] L9-->L9-2: Formula: (and (= v_ULTIMATE.start_fermat_~a~0_7 1) (= (+ v_ULTIMATE.start_fermat_~b~0_7 1) v_ULTIMATE.start_fermat_~b~0_6) (< v_ULTIMATE.start_fermat_~MAX~0_5 v_ULTIMATE.start_fermat_~a~0_8)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_7, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_5} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_7, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_6, ULTIMATE.start_fermat_#t~post1=|v_ULTIMATE.start_fermat_#t~post1_2|, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_5} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_~b~0, ULTIMATE.start_fermat_#t~post1] 6#L9-2true [49] L9-2-->L13-1: Formula: (and (< v_ULTIMATE.start_fermat_~MAX~0_7 v_ULTIMATE.start_fermat_~b~0_9) (= v_ULTIMATE.start_fermat_~b~0_8 1) (= (+ v_ULTIMATE.start_fermat_~c~0_8 1) v_ULTIMATE.start_fermat_~c~0_7)) InVars {ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_9, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_8, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_7} OutVars{ULTIMATE.start_fermat_#t~post2=|v_ULTIMATE.start_fermat_#t~post2_2|, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_8, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_7, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_7} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~c~0, ULTIMATE.start_fermat_#t~post2, ULTIMATE.start_fermat_~b~0] 5#L13-1true [61] L13-1-->L4-2: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_1 v_ULTIMATE.start_fermat_~c~0_1) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} AuxVars[] AssignedVars[] 7#L4-2true [2020-07-01 12:15:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash 76, now seen corresponding path program 1 times [2020-07-01 12:15:55,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:15:55,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583026028] [2020-07-01 12:15:55,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:15:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:55,627 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:15:55,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:55,628 INFO L82 PathProgramCache]: Analyzing trace with hash 79477241, now seen corresponding path program 1 times [2020-07-01 12:15:55,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:15:55,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761077581] [2020-07-01 12:15:55,629 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:15:55,634 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 12:15:55,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572413428] [2020-07-01 12:15:55,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:15:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:55,678 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:15:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2068303730, now seen corresponding path program 1 times [2020-07-01 12:15:55,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:15:55,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902194605] [2020-07-01 12:15:55,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:15:55,686 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 12:15:55,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729307563] [2020-07-01 12:15:55,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:15:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:15:55,721 INFO L264 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:15:55,723 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:15:55,776 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 12:15:55,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902194605] [2020-07-01 12:15:55,777 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-01 12:15:55,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729307563] [2020-07-01 12:15:55,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:15:55,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:15:55,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843057676] [2020-07-01 12:15:56,702 WARN L192 SmtUtils]: Spent 910.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-01 12:15:57,845 WARN L192 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 23 [2020-07-01 12:15:57,857 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:15:57,857 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:15:57,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:15:57,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:15:57,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:15:57,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:15:57,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:15:57,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:15:57,859 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:15:57,859 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:15:57,859 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:15:57,876 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 12:15:57,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:15:57,887 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 12:16:00,371 WARN L192 SmtUtils]: Spent 2.48 s on a formula simplification that was a NOOP. DAG size: 23 [2020-07-01 12:16:00,372 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 12:16:10,970 WARN L192 SmtUtils]: Spent 10.58 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-01 12:16:16,775 WARN L192 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-01 12:16:16,785 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:16:16,785 INFO L404 LassoAnalysis]: Checking for nontermination... 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 12:16:16,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:16:16,793 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:16:16,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:16:16,800 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_fermat_#t~post2=0} Honda state: {ULTIMATE.start_fermat_#t~post2=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 12:16:16,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:16:16,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:16:16,839 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:16:16,839 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_fermat_#t~post1=0} Honda state: {ULTIMATE.start_fermat_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 12:16:16,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:16:16,872 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:16:16,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:16:16,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:16:16,925 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:16:16,956 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:16:16,956 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:16:16,956 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:16:16,956 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:16:16,956 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:16:16,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:16:16,957 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:16:16,957 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:16:16,957 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:16:16,957 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:16:16,957 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:16:16,960 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 12:16:16,963 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 12:16:16,966 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 12:16:17,900 WARN L192 SmtUtils]: Spent 930.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-01 12:16:17,900 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 12:16:19,534 WARN L192 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-01 12:16:24,024 WARN L192 SmtUtils]: Spent 4.48 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-01 12:16:24,027 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:16:24,032 INFO L489 LassoAnalysis]: Using template 'affine'. 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 12:16:24,037 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 12:16:24,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:16:24,040 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:16:24,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:16:24,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:16:24,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:16:24,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:16:24,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:16:24,046 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 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 12:16:24,079 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 12:16:24,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:16:24,081 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:16:24,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:16:24,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:16:24,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:16:24,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:16:24,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:16:24,085 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:16:24,119 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 12:16:24,121 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:16:24,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:16:24,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:16:24,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:16:24,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:16:24,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:16:24,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:16:24,129 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:16:24,137 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 12:16:24,137 INFO L444 ModelExtractionUtils]: 2 out of 6 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:16:24,144 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:16:24,144 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:16:24,144 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:16:24,145 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_fermat_~MAX~0, ULTIMATE.start_fermat_~c~0) = 1*ULTIMATE.start_fermat_~MAX~0 - 1*ULTIMATE.start_fermat_~c~0 Supporting invariants [] [2020-07-01 12:16:24,179 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:16:24,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:16:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:16:24,218 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:16:24,219 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:16:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:16:24,228 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:16:24,228 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:16:24,240 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 12:16:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:16:24,262 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:16:24,263 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:16:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:16:24,297 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:16:24,297 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:16:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:16:24,309 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:16:24,310 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:16:24,357 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:16:24,363 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 12:16:24,364 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 6 states. Second operand 4 states. [2020-07-01 12:16:24,445 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 6 states.. Second operand 4 states. Result 15 states and 23 transitions. Complement of second has 5 states. [2020-07-01 12:16:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 2 accepting loop states [2020-07-01 12:16:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:16:24,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-07-01 12:16:24,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 1 letters. Loop has 5 letters. [2020-07-01 12:16:24,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:16:24,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 6 letters. Loop has 5 letters. [2020-07-01 12:16:24,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:16:24,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 1 letters. Loop has 10 letters. [2020-07-01 12:16:24,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:16:24,462 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2020-07-01 12:16:24,463 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 12:16:24,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 23 transitions. [2020-07-01 12:16:24,470 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 12:16:24,470 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 12:16:24,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 23 transitions. [2020-07-01 12:16:24,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:16:24,471 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-07-01 12:16:24,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 23 transitions. [2020-07-01 12:16:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-07-01 12:16:24,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-01 12:16:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2020-07-01 12:16:24,503 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2020-07-01 12:16:24,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:16:24,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:16:24,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:16:24,507 INFO L87 Difference]: Start difference. First operand 13 states and 20 transitions. Second operand 4 states. [2020-07-01 12:16:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:16:24,565 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2020-07-01 12:16:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:16:24,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 39 transitions. [2020-07-01 12:16:24,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 12:16:24,571 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 39 transitions. [2020-07-01 12:16:24,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-07-01 12:16:24,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-07-01 12:16:24,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 39 transitions. [2020-07-01 12:16:24,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:16:24,571 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 39 transitions. [2020-07-01 12:16:24,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 39 transitions. [2020-07-01 12:16:24,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2020-07-01 12:16:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-01 12:16:24,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2020-07-01 12:16:24,574 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2020-07-01 12:16:24,574 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2020-07-01 12:16:24,574 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:16:24,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 26 transitions. [2020-07-01 12:16:24,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 12:16:24,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:16:24,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:16:24,576 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-07-01 12:16:24,577 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 12:16:24,577 INFO L794 eck$LassoCheckResult]: Stem: 165#ULTIMATE.startENTRY [45] ULTIMATE.startENTRY-->L4-2: Formula: (and (= v_ULTIMATE.start_fermat_~MAX~0_2 1000) (= v_ULTIMATE.start_fermat_~b~0_1 1) (= v_ULTIMATE.start_fermat_~c~0_2 1) (= v_ULTIMATE.start_fermat_~a~0_1 1)) InVars {} OutVars{ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_2, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_2, ULTIMATE.start_fermat_#res=|v_ULTIMATE.start_fermat_#res_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_fermat_#t~post2=|v_ULTIMATE.start_fermat_#t~post2_1|, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_1, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_1, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_1|, ULTIMATE.start_fermat_#t~post1=|v_ULTIMATE.start_fermat_#t~post1_1|, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_1|} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~c~0, ULTIMATE.start_fermat_~MAX~0, ULTIMATE.start_fermat_#res, ULTIMATE.start_main_#res, ULTIMATE.start_fermat_#t~post2, ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_~b~0, ULTIMATE.start_fermat_#t~post0, ULTIMATE.start_fermat_#t~post1, ULTIMATE.start_main_#t~ret3] 166#L4-2 [53] L4-2-->L5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 177#L5 [63] L5-->L9: Formula: (and (> (* (* v_ULTIMATE.start_fermat_~a~0_6 v_ULTIMATE.start_fermat_~a~0_6) v_ULTIMATE.start_fermat_~a~0_6) (+ (* (* v_ULTIMATE.start_fermat_~b~0_5 v_ULTIMATE.start_fermat_~b~0_5) v_ULTIMATE.start_fermat_~b~0_5) (* (* v_ULTIMATE.start_fermat_~c~0_6 v_ULTIMATE.start_fermat_~c~0_6) v_ULTIMATE.start_fermat_~c~0_6))) (= (+ v_ULTIMATE.start_fermat_~a~0_6 1) v_ULTIMATE.start_fermat_~a~0_5)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_6, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_5, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_2|, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_#t~post0] 174#L9 [59] L9-->L9-2: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_6 v_ULTIMATE.start_fermat_~a~0_9) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_6, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_9} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_6, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_9} AuxVars[] AssignedVars[] 171#L9-2 [2020-07-01 12:16:24,577 INFO L796 eck$LassoCheckResult]: Loop: 171#L9-2 [60] L9-2-->L13-1: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_8 v_ULTIMATE.start_fermat_~b~0_10) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_10} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_10} AuxVars[] AssignedVars[] 167#L13-1 [61] L13-1-->L4-2: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_1 v_ULTIMATE.start_fermat_~c~0_1) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} AuxVars[] AssignedVars[] 168#L4-2 [53] L4-2-->L5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 161#L5 [62] L5-->L9: Formula: (and (< (* (* v_ULTIMATE.start_fermat_~a~0_6 v_ULTIMATE.start_fermat_~a~0_6) v_ULTIMATE.start_fermat_~a~0_6) (+ (* (* v_ULTIMATE.start_fermat_~b~0_5 v_ULTIMATE.start_fermat_~b~0_5) v_ULTIMATE.start_fermat_~b~0_5) (* (* v_ULTIMATE.start_fermat_~c~0_6 v_ULTIMATE.start_fermat_~c~0_6) v_ULTIMATE.start_fermat_~c~0_6))) (= (+ v_ULTIMATE.start_fermat_~a~0_6 1) v_ULTIMATE.start_fermat_~a~0_5)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_6, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_5, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_2|, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_#t~post0] 162#L9 [55] L9-->L9-2: Formula: (and (= v_ULTIMATE.start_fermat_~a~0_7 1) (= (+ v_ULTIMATE.start_fermat_~b~0_7 1) v_ULTIMATE.start_fermat_~b~0_6) (< v_ULTIMATE.start_fermat_~MAX~0_5 v_ULTIMATE.start_fermat_~a~0_8)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_7, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_5} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_7, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_6, ULTIMATE.start_fermat_#t~post1=|v_ULTIMATE.start_fermat_#t~post1_2|, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_5} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_~b~0, ULTIMATE.start_fermat_#t~post1] 171#L9-2 [2020-07-01 12:16:24,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:16:24,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2317061, now seen corresponding path program 1 times [2020-07-01 12:16:24,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:16:24,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607371113] [2020-07-01 12:16:24,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:16:24,582 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 12:16:24,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586283729] [2020-07-01 12:16:24,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:16:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:16:24,607 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-01 12:16:24,607 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:16:24,628 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 12:16:24,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607371113] [2020-07-01 12:16:24,629 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-01 12:16:24,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586283729] [2020-07-01 12:16:24,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:16:24,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:16:24,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177666831] [2020-07-01 12:16:24,630 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 12:16:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:16:24,630 INFO L82 PathProgramCache]: Analyzing trace with hash 85910572, now seen corresponding path program 1 times [2020-07-01 12:16:24,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:16:24,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37574327] [2020-07-01 12:16:24,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:16:24,638 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 12:16:24,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745545836] [2020-07-01 12:16:24,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:16:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:16:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:16:24,674 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:16:43,995 WARN L192 SmtUtils]: Spent 19.32 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:16:49,174 WARN L192 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 20 [2020-07-01 12:16:49,175 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:16:49,175 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:16:49,175 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:16:49,175 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:16:49,175 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:16:49,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:16:49,176 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:16:49,176 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:16:49,176 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:16:49,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:16:49,176 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:16:49,178 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 12:16:49,180 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 12:16:55,073 WARN L192 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 20 [2020-07-01 12:16:55,073 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 12:17:00,139 WARN L192 SmtUtils]: Spent 5.06 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:17:02,275 WARN L192 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:17:02,278 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:17:02,278 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:17:02,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:17:02,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:17:02,293 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:17:02,293 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_fermat_#t~post1=0} Honda state: {ULTIMATE.start_fermat_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 12:17:02,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:17:02,328 INFO L160 nArgumentSynthesizer]: Using integer mode. 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 12:17:02,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:17:02,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:17:02,376 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:17:02,406 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:17:02,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:17:02,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:17:02,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:17:02,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:17:02,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:17:02,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:17:02,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:17:02,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2020-07-01 12:17:02,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:17:02,407 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:17:02,410 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 12:17:02,412 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 12:17:02,415 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 12:17:08,422 WARN L192 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 20 [2020-07-01 12:17:15,363 WARN L192 SmtUtils]: Spent 6.93 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:17:16,787 WARN L192 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:17:16,788 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:17:16,788 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:17:16,793 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 12:17:16,795 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:17:16,795 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:17:16,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:17:16,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:17:16,796 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:17:16,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:17:16,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:17:16,798 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 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:17:16,833 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 12:17:16,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:17:16,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:17:16,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:17:16,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:17:16,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:17:16,836 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:17:16,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:17:16,838 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 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 12:17:16,873 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 12:17:16,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:17:16,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:17:16,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:17:16,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:17:16,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:17:16,897 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:17:16,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:17:16,902 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:17:16,906 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:17:16,906 INFO L444 ModelExtractionUtils]: 2 out of 6 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 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 12:17:16,910 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:17:16,910 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:17:16,910 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:17:16,911 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_fermat_~MAX~0, ULTIMATE.start_fermat_~b~0) = 2*ULTIMATE.start_fermat_~MAX~0 - 2*ULTIMATE.start_fermat_~b~0 + 1 Supporting invariants [] [2020-07-01 12:17:16,941 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:17:16,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:17:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:16,962 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:17:16,962 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:16,969 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:17:16,969 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:16,981 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 12:17:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:17,018 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:17:17,018 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:17,066 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:17:17,067 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:17,069 INFO L98 LoopCannibalizer]: 2 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:17:17,070 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 12:17:17,070 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 17 states and 26 transitions. cyclomatic complexity: 11 Second operand 3 states. [2020-07-01 12:17:17,123 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 17 states and 26 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 74 states and 110 transitions. Complement of second has 12 states. [2020-07-01 12:17:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 12:17:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:17:17,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2020-07-01 12:17:17,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 4 letters. Loop has 5 letters. [2020-07-01 12:17:17,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:17:17,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 9 letters. Loop has 5 letters. [2020-07-01 12:17:17,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:17:17,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 4 letters. Loop has 10 letters. [2020-07-01 12:17:17,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:17:17,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 110 transitions. [2020-07-01 12:17:17,131 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-07-01 12:17:17,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 35 states and 52 transitions. [2020-07-01 12:17:17,132 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-07-01 12:17:17,132 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-07-01 12:17:17,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 52 transitions. [2020-07-01 12:17:17,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:17:17,132 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2020-07-01 12:17:17,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 52 transitions. [2020-07-01 12:17:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-01 12:17:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-01 12:17:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 52 transitions. [2020-07-01 12:17:17,136 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2020-07-01 12:17:17,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:17:17,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:17:17,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:17:17,137 INFO L87 Difference]: Start difference. First operand 35 states and 52 transitions. Second operand 3 states. [2020-07-01 12:17:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:17:17,154 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2020-07-01 12:17:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 12:17:17,156 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2020-07-01 12:17:17,157 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-07-01 12:17:17,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 50 transitions. [2020-07-01 12:17:17,158 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2020-07-01 12:17:17,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-07-01 12:17:17,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 50 transitions. [2020-07-01 12:17:17,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:17:17,158 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-07-01 12:17:17,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 50 transitions. [2020-07-01 12:17:17,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-01 12:17:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-01 12:17:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-07-01 12:17:17,162 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-07-01 12:17:17,162 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-07-01 12:17:17,162 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 12:17:17,162 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2020-07-01 12:17:17,163 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-07-01 12:17:17,163 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:17:17,163 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:17:17,163 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-07-01 12:17:17,164 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 12:17:17,164 INFO L794 eck$LassoCheckResult]: Stem: 416#ULTIMATE.startENTRY [45] ULTIMATE.startENTRY-->L4-2: Formula: (and (= v_ULTIMATE.start_fermat_~MAX~0_2 1000) (= v_ULTIMATE.start_fermat_~b~0_1 1) (= v_ULTIMATE.start_fermat_~c~0_2 1) (= v_ULTIMATE.start_fermat_~a~0_1 1)) InVars {} OutVars{ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_2, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_2, ULTIMATE.start_fermat_#res=|v_ULTIMATE.start_fermat_#res_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_fermat_#t~post2=|v_ULTIMATE.start_fermat_#t~post2_1|, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_1, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_1, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_1|, ULTIMATE.start_fermat_#t~post1=|v_ULTIMATE.start_fermat_#t~post1_1|, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_1|} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~c~0, ULTIMATE.start_fermat_~MAX~0, ULTIMATE.start_fermat_#res, ULTIMATE.start_main_#res, ULTIMATE.start_fermat_#t~post2, ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_~b~0, ULTIMATE.start_fermat_#t~post0, ULTIMATE.start_fermat_#t~post1, ULTIMATE.start_main_#t~ret3] 417#L4-2 [53] L4-2-->L5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 435#L5 [62] L5-->L9: Formula: (and (< (* (* v_ULTIMATE.start_fermat_~a~0_6 v_ULTIMATE.start_fermat_~a~0_6) v_ULTIMATE.start_fermat_~a~0_6) (+ (* (* v_ULTIMATE.start_fermat_~b~0_5 v_ULTIMATE.start_fermat_~b~0_5) v_ULTIMATE.start_fermat_~b~0_5) (* (* v_ULTIMATE.start_fermat_~c~0_6 v_ULTIMATE.start_fermat_~c~0_6) v_ULTIMATE.start_fermat_~c~0_6))) (= (+ v_ULTIMATE.start_fermat_~a~0_6 1) v_ULTIMATE.start_fermat_~a~0_5)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_6, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_5, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_2|, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_#t~post0] 434#L9 [59] L9-->L9-2: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_6 v_ULTIMATE.start_fermat_~a~0_9) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_6, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_9} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_6, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_9} AuxVars[] AssignedVars[] 433#L9-2 [60] L9-2-->L13-1: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_8 v_ULTIMATE.start_fermat_~b~0_10) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_10} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_10} AuxVars[] AssignedVars[] 418#L13-1 [2020-07-01 12:17:17,164 INFO L796 eck$LassoCheckResult]: Loop: 418#L13-1 [61] L13-1-->L4-2: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_1 v_ULTIMATE.start_fermat_~c~0_1) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} AuxVars[] AssignedVars[] 419#L4-2 [53] L4-2-->L5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 412#L5 [62] L5-->L9: Formula: (and (< (* (* v_ULTIMATE.start_fermat_~a~0_6 v_ULTIMATE.start_fermat_~a~0_6) v_ULTIMATE.start_fermat_~a~0_6) (+ (* (* v_ULTIMATE.start_fermat_~b~0_5 v_ULTIMATE.start_fermat_~b~0_5) v_ULTIMATE.start_fermat_~b~0_5) (* (* v_ULTIMATE.start_fermat_~c~0_6 v_ULTIMATE.start_fermat_~c~0_6) v_ULTIMATE.start_fermat_~c~0_6))) (= (+ v_ULTIMATE.start_fermat_~a~0_6 1) v_ULTIMATE.start_fermat_~a~0_5)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_6, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_5, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_2|, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_#t~post0] 413#L9 [59] L9-->L9-2: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_6 v_ULTIMATE.start_fermat_~a~0_9) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_6, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_9} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_6, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_9} AuxVars[] AssignedVars[] 422#L9-2 [60] L9-2-->L13-1: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_8 v_ULTIMATE.start_fermat_~b~0_10) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_10} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_10} AuxVars[] AssignedVars[] 418#L13-1 [2020-07-01 12:17:17,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:17:17,165 INFO L82 PathProgramCache]: Analyzing trace with hash 71827990, now seen corresponding path program 1 times [2020-07-01 12:17:17,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:17:17,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037307618] [2020-07-01 12:17:17,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:17:17,168 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 12:17:17,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193274114] [2020-07-01 12:17:17,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:17:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:17:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:17:17,193 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:17:17,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:17:17,193 INFO L82 PathProgramCache]: Analyzing trace with hash 86604326, now seen corresponding path program 1 times [2020-07-01 12:17:17,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:17:17,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760367938] [2020-07-01 12:17:17,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:17:17,196 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 12:17:17,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275936728] [2020-07-01 12:17:17,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:17:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:17:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:17:17,219 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:17:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:17:17,220 INFO L82 PathProgramCache]: Analyzing trace with hash -77038287, now seen corresponding path program 1 times [2020-07-01 12:17:17,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:17:17,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294788082] [2020-07-01 12:17:17,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:17:17,223 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 12:17:17,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334161947] [2020-07-01 12:17:17,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:17:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:17,246 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-01 12:17:17,247 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:17:17,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294788082] [2020-07-01 12:17:17,279 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-01 12:17:17,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334161947] [2020-07-01 12:17:17,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:17:17,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 12:17:17,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587619392] [2020-07-01 12:17:18,106 WARN L192 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-01 12:17:22,438 WARN L192 SmtUtils]: Spent 4.33 s on a formula simplification that was a NOOP. DAG size: 17 [2020-07-01 12:17:22,439 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:17:22,439 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:17:22,439 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:17:22,440 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:17:22,440 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:17:22,440 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:17:22,440 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:17:22,440 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:17:22,440 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:17:22,440 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:17:22,440 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:17:22,442 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 12:17:22,445 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 12:17:22,996 WARN L192 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-01 12:17:28,567 WARN L192 SmtUtils]: Spent 5.52 s on a formula simplification that was a NOOP. DAG size: 18 [2020-07-01 12:17:28,568 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:17:28,568 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:17:28,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:17:28,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:17:28,578 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:17:28,578 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_fermat_#t~post0=0} Honda state: {ULTIMATE.start_fermat_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:17:28,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:17:28,613 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:17:28,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:17:28,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:17:28,658 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:17:28,688 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:17:28,689 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:17:28,689 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:17:28,689 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:17:28,689 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:17:28,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:17:28,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:17:28,690 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:17:28,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2020-07-01 12:17:28,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:17:28,690 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:17:28,692 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 12:17:28,695 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 12:17:29,395 WARN L192 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-01 12:17:29,905 WARN L192 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-01 12:17:29,907 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:17:29,907 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:17:29,914 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 12:17:29,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:17:29,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:17:29,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:17:29,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:17:29,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:17:29,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:17:29,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:17:29,919 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 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:17:29,953 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 12:17:29,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:17:29,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:17:29,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:17:29,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:17:29,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:17:29,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:17:29,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:17:29,961 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:17:29,964 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:17:29,964 INFO L444 ModelExtractionUtils]: 3 out of 6 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 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:17:29,969 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:17:29,969 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:17:29,969 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:17:29,969 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_fermat_~MAX~0, ULTIMATE.start_fermat_~a~0) = 1*ULTIMATE.start_fermat_~MAX~0 - 1*ULTIMATE.start_fermat_~a~0 Supporting invariants [] [2020-07-01 12:17:30,000 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:17:30,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:17:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:30,018 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:17:30,019 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:30,023 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:17:30,024 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:30,044 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 12:17:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:30,055 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:17:30,055 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:30,087 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:17:30,087 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:30,089 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:17:30,089 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 12:17:30,089 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2020-07-01 12:17:30,164 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 133 states and 193 transitions. Complement of second has 20 states. [2020-07-01 12:17:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 12:17:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 12:17:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2020-07-01 12:17:30,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 5 letters. Loop has 5 letters. [2020-07-01 12:17:30,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:17:30,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 10 letters. Loop has 5 letters. [2020-07-01 12:17:30,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:17:30,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 5 letters. Loop has 10 letters. [2020-07-01 12:17:30,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:17:30,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 133 states and 193 transitions. [2020-07-01 12:17:30,172 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 12:17:30,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 133 states to 51 states and 73 transitions. [2020-07-01 12:17:30,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-07-01 12:17:30,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-07-01 12:17:30,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 73 transitions. [2020-07-01 12:17:30,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:17:30,174 INFO L688 BuchiCegarLoop]: Abstraction has 51 states and 73 transitions. [2020-07-01 12:17:30,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 73 transitions. [2020-07-01 12:17:30,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 29. [2020-07-01 12:17:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-01 12:17:30,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2020-07-01 12:17:30,177 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 41 transitions. [2020-07-01 12:17:30,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:17:30,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:17:30,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:17:30,178 INFO L87 Difference]: Start difference. First operand 29 states and 41 transitions. Second operand 4 states. [2020-07-01 12:17:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:17:30,214 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2020-07-01 12:17:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 12:17:30,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 53 transitions. [2020-07-01 12:17:30,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 12:17:30,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 53 transitions. [2020-07-01 12:17:30,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 12:17:30,217 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 12:17:30,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 53 transitions. [2020-07-01 12:17:30,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:17:30,218 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 53 transitions. [2020-07-01 12:17:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 53 transitions. [2020-07-01 12:17:30,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-07-01 12:17:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-01 12:17:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-07-01 12:17:30,221 INFO L711 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-07-01 12:17:30,221 INFO L591 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-07-01 12:17:30,221 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 12:17:30,221 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 52 transitions. [2020-07-01 12:17:30,222 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 12:17:30,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:17:30,222 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:17:30,222 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-07-01 12:17:30,223 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-07-01 12:17:30,223 INFO L794 eck$LassoCheckResult]: Stem: 779#ULTIMATE.startENTRY [45] ULTIMATE.startENTRY-->L4-2: Formula: (and (= v_ULTIMATE.start_fermat_~MAX~0_2 1000) (= v_ULTIMATE.start_fermat_~b~0_1 1) (= v_ULTIMATE.start_fermat_~c~0_2 1) (= v_ULTIMATE.start_fermat_~a~0_1 1)) InVars {} OutVars{ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_2, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_2, ULTIMATE.start_fermat_#res=|v_ULTIMATE.start_fermat_#res_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|, ULTIMATE.start_fermat_#t~post2=|v_ULTIMATE.start_fermat_#t~post2_1|, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_1, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_1, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_1|, ULTIMATE.start_fermat_#t~post1=|v_ULTIMATE.start_fermat_#t~post1_1|, ULTIMATE.start_main_#t~ret3=|v_ULTIMATE.start_main_#t~ret3_1|} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~c~0, ULTIMATE.start_fermat_~MAX~0, ULTIMATE.start_fermat_#res, ULTIMATE.start_main_#res, ULTIMATE.start_fermat_#t~post2, ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_~b~0, ULTIMATE.start_fermat_#t~post0, ULTIMATE.start_fermat_#t~post1, ULTIMATE.start_main_#t~ret3] 780#L4-2 [53] L4-2-->L5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 789#L5 [62] L5-->L9: Formula: (and (< (* (* v_ULTIMATE.start_fermat_~a~0_6 v_ULTIMATE.start_fermat_~a~0_6) v_ULTIMATE.start_fermat_~a~0_6) (+ (* (* v_ULTIMATE.start_fermat_~b~0_5 v_ULTIMATE.start_fermat_~b~0_5) v_ULTIMATE.start_fermat_~b~0_5) (* (* v_ULTIMATE.start_fermat_~c~0_6 v_ULTIMATE.start_fermat_~c~0_6) v_ULTIMATE.start_fermat_~c~0_6))) (= (+ v_ULTIMATE.start_fermat_~a~0_6 1) v_ULTIMATE.start_fermat_~a~0_5)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_6, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_5, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_2|, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_#t~post0] 807#L9 [59] L9-->L9-2: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_6 v_ULTIMATE.start_fermat_~a~0_9) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_6, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_9} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_6, ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_9} AuxVars[] AssignedVars[] 806#L9-2 [49] L9-2-->L13-1: Formula: (and (< v_ULTIMATE.start_fermat_~MAX~0_7 v_ULTIMATE.start_fermat_~b~0_9) (= v_ULTIMATE.start_fermat_~b~0_8 1) (= (+ v_ULTIMATE.start_fermat_~c~0_8 1) v_ULTIMATE.start_fermat_~c~0_7)) InVars {ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_9, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_8, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_7} OutVars{ULTIMATE.start_fermat_#t~post2=|v_ULTIMATE.start_fermat_#t~post2_2|, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_8, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_7, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_7} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~c~0, ULTIMATE.start_fermat_#t~post2, ULTIMATE.start_fermat_~b~0] 794#L13-1 [61] L13-1-->L4-2: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_1 v_ULTIMATE.start_fermat_~c~0_1) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} AuxVars[] AssignedVars[] 782#L4-2 [2020-07-01 12:17:30,223 INFO L796 eck$LassoCheckResult]: Loop: 782#L4-2 [53] L4-2-->L5: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 775#L5 [62] L5-->L9: Formula: (and (< (* (* v_ULTIMATE.start_fermat_~a~0_6 v_ULTIMATE.start_fermat_~a~0_6) v_ULTIMATE.start_fermat_~a~0_6) (+ (* (* v_ULTIMATE.start_fermat_~b~0_5 v_ULTIMATE.start_fermat_~b~0_5) v_ULTIMATE.start_fermat_~b~0_5) (* (* v_ULTIMATE.start_fermat_~c~0_6 v_ULTIMATE.start_fermat_~c~0_6) v_ULTIMATE.start_fermat_~c~0_6))) (= (+ v_ULTIMATE.start_fermat_~a~0_6 1) v_ULTIMATE.start_fermat_~a~0_5)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_6, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_5, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_5, ULTIMATE.start_fermat_#t~post0=|v_ULTIMATE.start_fermat_#t~post0_2|, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_6} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_#t~post0] 776#L9 [55] L9-->L9-2: Formula: (and (= v_ULTIMATE.start_fermat_~a~0_7 1) (= (+ v_ULTIMATE.start_fermat_~b~0_7 1) v_ULTIMATE.start_fermat_~b~0_6) (< v_ULTIMATE.start_fermat_~MAX~0_5 v_ULTIMATE.start_fermat_~a~0_8)) InVars {ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_7, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_5} OutVars{ULTIMATE.start_fermat_~a~0=v_ULTIMATE.start_fermat_~a~0_7, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_6, ULTIMATE.start_fermat_#t~post1=|v_ULTIMATE.start_fermat_#t~post1_2|, ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_5} AuxVars[] AssignedVars[ULTIMATE.start_fermat_~a~0, ULTIMATE.start_fermat_~b~0, ULTIMATE.start_fermat_#t~post1] 786#L9-2 [60] L9-2-->L13-1: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_8 v_ULTIMATE.start_fermat_~b~0_10) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_10} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_8, ULTIMATE.start_fermat_~b~0=v_ULTIMATE.start_fermat_~b~0_10} AuxVars[] AssignedVars[] 781#L13-1 [61] L13-1-->L4-2: Formula: (>= v_ULTIMATE.start_fermat_~MAX~0_1 v_ULTIMATE.start_fermat_~c~0_1) InVars {ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} OutVars{ULTIMATE.start_fermat_~MAX~0=v_ULTIMATE.start_fermat_~MAX~0_1, ULTIMATE.start_fermat_~c~0=v_ULTIMATE.start_fermat_~c~0_1} AuxVars[] AssignedVars[] 782#L4-2 [2020-07-01 12:17:30,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:17:30,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2068299886, now seen corresponding path program 1 times [2020-07-01 12:17:30,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:17:30,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005416417] [2020-07-01 12:17:30,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:17:30,227 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 12:17:30,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607231995] [2020-07-01 12:17:30,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:17:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:17:30,250 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 12:17:30,251 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:17:30,260 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 12:17:30,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005416417] [2020-07-01 12:17:30,261 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-01 12:17:30,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607231995] [2020-07-01 12:17:30,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:17:30,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:17:30,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564123840] [2020-07-01 12:17:30,262 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 12:17:30,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:17:30,262 INFO L82 PathProgramCache]: Analyzing trace with hash 79477582, now seen corresponding path program 2 times [2020-07-01 12:17:30,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:17:30,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582661880] [2020-07-01 12:17:30,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:17:30,265 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-01 12:17:30,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863451890] [2020-07-01 12:17:30,265 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 12:17:30,658 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-07-01 12:17:30,658 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-01 12:17:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:17:30,763 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:17:38,488 WARN L192 SmtUtils]: Spent 7.72 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:17:49,153 WARN L192 SmtUtils]: Spent 10.66 s on a formula simplification that was a NOOP. DAG size: 20 [2020-07-01 12:17:49,154 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:17:49,155 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:17:49,155 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:17:49,155 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:17:49,155 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:17:49,155 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:17:49,155 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:17:49,155 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:17:49,155 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 12:17:49,155 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:17:49,156 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:17:49,157 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 12:17:49,159 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 12:17:49,162 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 12:18:17,644 WARN L192 SmtUtils]: Spent 28.48 s on a formula simplification that was a NOOP. DAG size: 20 [2020-07-01 12:18:19,939 WARN L192 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:18:22,939 WARN L192 SmtUtils]: Spent 2.99 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:18:22,940 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:18:22,958 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:18:22,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:18:22,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:18:22,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:18:22,967 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_fermat_#t~post0=0} Honda state: {ULTIMATE.start_fermat_#t~post0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:18:23,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:18:23,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:18:23,004 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 12:18:23,005 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_fermat_#t~post1=0} Honda state: {ULTIMATE.start_fermat_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:18:23,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:18:23,038 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:18:23,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:18:23,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:18:23,083 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:18:23,113 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:18:23,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:18:23,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:18:23,113 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:18:23,113 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:18:23,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:18:23,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:18:23,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:18:23,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2020-07-01 12:18:23,114 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:18:23,114 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:18:23,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:18:23,118 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 12:18:23,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:18:34,562 WARN L192 SmtUtils]: Spent 11.44 s on a formula simplification that was a NOOP. DAG size: 20 [2020-07-01 12:18:48,954 WARN L192 SmtUtils]: Spent 14.39 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:19:04,613 WARN L192 SmtUtils]: Spent 15.65 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-01 12:19:04,614 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:19:04,614 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:19:04,618 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 12:19:04,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:19:04,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:19:04,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:19:04,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:19:04,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:19:04,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:19:04,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:19:04,623 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:19:04,657 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 12:19:04,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:19:04,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:19:04,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:19:04,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:19:04,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:19:04,660 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:19:04,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:19:04,662 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:19:04,697 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 12:19:04,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:19:04,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:19:04,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:19:04,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:19:04,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:19:04,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:19:04,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:19:04,706 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:19:04,711 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-07-01 12:19:04,711 INFO L444 ModelExtractionUtils]: 2 out of 6 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:19:04,716 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:19:04,716 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:19:04,716 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:19:04,716 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_fermat_~b~0, ULTIMATE.start_fermat_~MAX~0) = -1*ULTIMATE.start_fermat_~b~0 + 1*ULTIMATE.start_fermat_~MAX~0 Supporting invariants [] [2020-07-01 12:19:04,747 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:19:04,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:19:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:19:04,767 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:19:04,768 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:19:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:19:04,774 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:19:04,774 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:19:04,797 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 12:19:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:19:04,813 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:19:04,814 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:19:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:19:04,822 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:19:04,822 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:19:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:19:04,858 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:19:04,859 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:19:04,860 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:19:04,861 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 12:19:04,861 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 38 states and 52 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-07-01 12:19:04,944 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 38 states and 52 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 232 states and 334 transitions. Complement of second has 39 states. [2020-07-01 12:19:04,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 3 non-accepting loop states 2 accepting loop states [2020-07-01 12:19:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-01 12:19:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2020-07-01 12:19:04,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 6 letters. Loop has 5 letters. [2020-07-01 12:19:04,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:19:04,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 11 letters. Loop has 5 letters. [2020-07-01 12:19:04,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:19:04,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 6 letters. Loop has 10 letters. [2020-07-01 12:19:04,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:19:04,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 232 states and 334 transitions. [2020-07-01 12:19:04,952 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:19:04,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 232 states to 0 states and 0 transitions. [2020-07-01 12:19:04,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:19:04,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:19:04,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:19:04,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:19:04,953 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:19:04,953 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:19:04,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:19:04,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 12:19:04,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 12:19:04,954 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2020-07-01 12:19:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:19:04,954 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-01 12:19:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-01 12:19:04,955 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-01 12:19:04,955 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:19:04,955 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 12:19:04,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:19:04,956 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:19:04,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:19:04,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:19:04,956 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:19:04,956 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:19:04,956 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:19:04,956 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 12:19:04,956 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:19:04,956 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:19:04,957 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:19:04,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:19:04 BasicIcfg [2020-07-01 12:19:04,963 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:19:04,964 INFO L168 Benchmark]: Toolchain (without parser) took 190323.10 ms. Allocated memory was 649.6 MB in the beginning and 745.5 MB in the end (delta: 95.9 MB). Free memory was 561.8 MB in the beginning and 438.2 MB in the end (delta: 123.6 MB). Peak memory consumption was 219.5 MB. Max. memory is 50.3 GB. [2020-07-01 12:19:04,964 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:19:04,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.60 ms. Allocated memory was 649.6 MB in the beginning and 680.0 MB in the end (delta: 30.4 MB). Free memory was 561.8 MB in the beginning and 642.9 MB in the end (delta: -81.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:19:04,966 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.63 ms. Allocated memory is still 680.0 MB. Free memory was 642.9 MB in the beginning and 640.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-07-01 12:19:04,966 INFO L168 Benchmark]: Boogie Preprocessor took 21.49 ms. Allocated memory is still 680.0 MB. Free memory was 640.7 MB in the beginning and 639.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:19:04,967 INFO L168 Benchmark]: RCFGBuilder took 247.03 ms. Allocated memory is still 680.0 MB. Free memory was 639.6 MB in the beginning and 624.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. [2020-07-01 12:19:04,967 INFO L168 Benchmark]: BlockEncodingV2 took 73.83 ms. Allocated memory is still 680.0 MB. Free memory was 624.0 MB in the beginning and 618.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:19:04,967 INFO L168 Benchmark]: TraceAbstraction took 150.74 ms. Allocated memory is still 680.0 MB. Free memory was 617.6 MB in the beginning and 609.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:19:04,968 INFO L168 Benchmark]: BuchiAutomizer took 189492.21 ms. Allocated memory was 680.0 MB in the beginning and 745.5 MB in the end (delta: 65.5 MB). Free memory was 608.8 MB in the beginning and 438.2 MB in the end (delta: 170.5 MB). Peak memory consumption was 236.0 MB. Max. memory is 50.3 GB. [2020-07-01 12:19:04,971 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 11 locations, 16 edges - StatisticsResult: Encoded RCFG 6 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 296.60 ms. Allocated memory was 649.6 MB in the beginning and 680.0 MB in the end (delta: 30.4 MB). Free memory was 561.8 MB in the beginning and 642.9 MB in the end (delta: -81.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 35.63 ms. Allocated memory is still 680.0 MB. Free memory was 642.9 MB in the beginning and 640.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 21.49 ms. Allocated memory is still 680.0 MB. Free memory was 640.7 MB in the beginning and 639.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 247.03 ms. Allocated memory is still 680.0 MB. Free memory was 639.6 MB in the beginning and 624.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 73.83 ms. Allocated memory is still 680.0 MB. Free memory was 624.0 MB in the beginning and 618.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 150.74 ms. Allocated memory is still 680.0 MB. Free memory was 617.6 MB in the beginning and 609.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 189492.21 ms. Allocated memory was 680.0 MB in the beginning and 745.5 MB in the end (delta: 65.5 MB). Free memory was 608.8 MB in the beginning and 438.2 MB in the end (delta: 170.5 MB). Peak memory consumption was 236.0 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 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=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 0 deterministic, 4 nondeterministic). One nondeterministic module has affine ranking function MAX + -1 * c and consists of 4 locations. One nondeterministic module has affine ranking function 2 * MAX + -2 * b + 1 and consists of 4 locations. One nondeterministic module has affine ranking function MAX + -1 * a and consists of 6 locations. One nondeterministic module has affine ranking function -1 * b + MAX and consists of 7 locations. 4 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 189.4s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 188.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 34 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 38 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 33 SDtfs, 89 SDslu, 19 SDs, 0 SdLazy, 199 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT2 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital35 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq128 hnf95 smp100 dnf100 smp100 tf104 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:15:51.314 ----------------------------------------------- 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_r6vk_y/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:19:07.607 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check