/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- YES Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 11:07:54,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:07:54,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:07:54,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:07:54,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:07:54,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:07:54,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:07:54,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:07:54,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:07:54,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:07:54,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:07:54,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:07:54,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:07:54,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:07:54,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:07:54,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:07:54,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:07:54,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:07:54,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:07:54,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:07:54,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:07:54,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:07:54,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:07:54,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:07:54,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:07:54,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:07:54,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:07:54,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:07:54,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:07:54,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:07:54,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:07:54,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:07:54,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:07:54,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:07:54,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:07:54,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:07:54,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:07:54,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:07:54,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:07:54,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:07:54,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:07:54,256 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:07:54,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:07:54,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:07:54,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:07:54,272 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:07:54,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:07:54,272 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:07:54,273 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:07:54,273 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:07:54,273 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:07:54,273 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:07:54,273 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:07:54,273 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:07:54,274 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:07:54,274 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:07:54,274 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:07:54,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:07:54,274 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:07:54,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:07:54,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:07:54,275 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:07:54,275 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:07:54,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:07:54,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:07:54,276 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:07:54,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:07:54,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:07:54,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:07:54,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:07:54,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:07:54,444 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:07:54,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:07:54,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:07:54,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:07:54,464 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:07:54,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:07:54,524 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_IqO_Dc/tmp/7d2b64fd9e8148ce8d08c326aaefd093/FLAG5ee81f6dd [2020-07-01 11:07:54,865 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:07:54,866 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:07:54,872 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_IqO_Dc/tmp/7d2b64fd9e8148ce8d08c326aaefd093/FLAG5ee81f6dd [2020-07-01 11:07:55,460 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_IqO_Dc/tmp/7d2b64fd9e8148ce8d08c326aaefd093 [2020-07-01 11:07:55,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:07:55,472 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:07:55,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:07:55,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:07:55,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:07:55,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3970e5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55, skipping insertion in model container [2020-07-01 11:07:55,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:07:55,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:07:55,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:07:55,738 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:07:55,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:07:55,769 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:07:55,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55 WrapperNode [2020-07-01 11:07:55,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:07:55,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:07:55,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:07:55,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:07:55,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:07:55,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:07:55,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:07:55,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:07:55,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... [2020-07-01 11:07:55,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:07:55,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:07:55,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:07:55,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:07:55,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:07:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:07:55,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:07:56,057 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:07:56,057 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:07:56,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:07:56 BoogieIcfgContainer [2020-07-01 11:07:56,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:07:56,061 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:07:56,061 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:07:56,064 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:07:56,064 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:07:56" (1/1) ... [2020-07-01 11:07:56,077 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 11:07:56,079 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:07:56,079 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:07:56,080 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:07:56,080 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:07:56,082 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:07:56,083 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:07:56,083 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:07:56,098 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:07:56,114 INFO L200 BlockEncoder]: SBE split 3 edges [2020-07-01 11:07:56,118 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:07:56,120 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:07:56,130 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 11:07:56,132 INFO L70 RemoveSinkStates]: Removed 5 edges and 2 locations by removing sink states [2020-07-01 11:07:56,134 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:07:56,134 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:07:56,140 INFO L100 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2020-07-01 11:07:56,140 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:07:56,141 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:07:56,141 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:07:56,141 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:07:56,141 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:07:56,142 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 7 edges [2020-07-01 11:07:56,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:07:56 BasicIcfg [2020-07-01 11:07:56,142 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:07:56,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:07:56,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:07:56,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:07:56,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:07:55" (1/4) ... [2020-07-01 11:07:56,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f439e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:07:56, skipping insertion in model container [2020-07-01 11:07:56,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (2/4) ... [2020-07-01 11:07:56,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f439e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:07:56, skipping insertion in model container [2020-07-01 11:07:56,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:07:56" (3/4) ... [2020-07-01 11:07:56,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f439e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:07:56, skipping insertion in model container [2020-07-01 11:07:56,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:07:56" (4/4) ... [2020-07-01 11:07:56,151 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:07:56,161 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:07:56,167 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:07:56,181 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:07:56,203 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:07:56,204 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:07:56,204 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:07:56,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:07:56,204 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:07:56,204 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:07:56,204 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:07:56,205 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:07:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3 states. [2020-07-01 11:07:56,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:07:56,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-07-01 11:07:56,277 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:07:56,277 INFO L268 CegarLoopResult]: For program point L22(lines 22 26) no Hoare annotation was computed. [2020-07-01 11:07:56,278 INFO L271 CegarLoopResult]: At program point L22-2(lines 21 27) the Hoare annotation is: true [2020-07-01 11:07:56,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:07:56 BasicIcfg [2020-07-01 11:07:56,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:07:56,287 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:07:56,287 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:07:56,291 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:07:56,291 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:07:56,292 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:07:55" (1/5) ... [2020-07-01 11:07:56,292 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f72d89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:07:56, skipping insertion in model container [2020-07-01 11:07:56,292 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:07:56,293 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:07:55" (2/5) ... [2020-07-01 11:07:56,293 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f72d89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:07:56, skipping insertion in model container [2020-07-01 11:07:56,293 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:07:56,293 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:07:56" (3/5) ... [2020-07-01 11:07:56,294 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f72d89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:07:56, skipping insertion in model container [2020-07-01 11:07:56,294 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:07:56,294 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:07:56" (4/5) ... [2020-07-01 11:07:56,294 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f72d89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:07:56, skipping insertion in model container [2020-07-01 11:07:56,294 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:07:56,295 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:07:56" (5/5) ... [2020-07-01 11:07:56,296 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:07:56,325 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:07:56,326 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:07:56,326 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:07:56,326 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:07:56,326 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:07:56,326 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:07:56,326 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:07:56,326 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:07:56,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:07:56,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:07:56,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:07:56,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:07:56,355 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:07:56,355 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:07:56,355 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:07:56,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states. [2020-07-01 11:07:56,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:07:56,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:07:56,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:07:56,356 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:07:56,356 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:07:56,361 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [54] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_8) (= (+ v_ULTIMATE.start_main_~id~0_8 1) v_ULTIMATE.start_main_~tmp~0_9) (< v_ULTIMATE.start_main_~id~0_8 v_ULTIMATE.start_main_~maxId~0_8)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_8, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 5#L22-2true [2020-07-01 11:07:56,362 INFO L796 eck$LassoCheckResult]: Loop: 5#L22-2true [48] L22-2-->L22: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 4#L22true [32] L22-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 5#L22-2true [2020-07-01 11:07:56,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:56,368 INFO L82 PathProgramCache]: Analyzing trace with hash 85, now seen corresponding path program 1 times [2020-07-01 11:07:56,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:56,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773576793] [2020-07-01 11:07:56,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:56,475 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:56,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:56,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2481, now seen corresponding path program 1 times [2020-07-01 11:07:56,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:56,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398994461] [2020-07-01 11:07:56,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:56,487 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:56,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:56,489 INFO L82 PathProgramCache]: Analyzing trace with hash 83205, now seen corresponding path program 1 times [2020-07-01 11:07:56,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:56,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646247209] [2020-07-01 11:07:56,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:07:56,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646247209] [2020-07-01 11:07:56,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:07:56,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 11:07:56,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163115854] [2020-07-01 11:07:56,586 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:07:56,587 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:07:56,587 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:07:56,587 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:07:56,587 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:07:56,588 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:07:56,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:07:56,588 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:07:56,588 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:07:56,588 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:07:56,589 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:07:56,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:07:56,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:07:56,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:07:56,678 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:07:56,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:07:56,687 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:07:56,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:07:56,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:07:56,946 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:07:56,949 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:07:56,949 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:07:56,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:07:56,950 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:07:56,950 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:07:56,950 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:07:56,950 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:07:56,950 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:07:56,950 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 11:07:56,950 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:07:56,950 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:07:56,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:07:56,966 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 11:07:57,007 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:07:57,013 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:07:57,017 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:07:57,020 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:07:57,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:07:57,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:07:57,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:07:57,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:07:57,025 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:07:57,025 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:07:57,031 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:07:57,041 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:07:57,041 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:07:57,051 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:07:57,051 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:07:57,052 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:07:57,053 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_~maxId~0) = -2*ULTIMATE.start_main_~tmp~0 + 2*ULTIMATE.start_main_~maxId~0 + 1 Supporting invariants [] [2020-07-01 11:07:57,087 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:07:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:57,126 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:07:57,127 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:07:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:57,137 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:07:57,138 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:07:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:07:57,151 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:07:57,156 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-07-01 11:07:57,158 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 3 states. Second operand 3 states. [2020-07-01 11:07:57,196 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 3 states.. Second operand 3 states. Result 7 states and 25 transitions. Complement of second has 4 states. [2020-07-01 11:07:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:07:57,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:07:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2020-07-01 11:07:57,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 1 letters. Loop has 2 letters. [2020-07-01 11:07:57,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:07:57,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 3 letters. Loop has 2 letters. [2020-07-01 11:07:57,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:07:57,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 1 letters. Loop has 4 letters. [2020-07-01 11:07:57,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:07:57,208 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 25 transitions. [2020-07-01 11:07:57,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:07:57,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 25 transitions. [2020-07-01 11:07:57,215 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-07-01 11:07:57,215 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-07-01 11:07:57,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 25 transitions. [2020-07-01 11:07:57,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:07:57,216 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 25 transitions. [2020-07-01 11:07:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 25 transitions. [2020-07-01 11:07:57,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-07-01 11:07:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 11:07:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 25 transitions. [2020-07-01 11:07:57,245 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 25 transitions. [2020-07-01 11:07:57,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:07:57,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 11:07:57,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 11:07:57,249 INFO L87 Difference]: Start difference. First operand 7 states and 25 transitions. Second operand 3 states. [2020-07-01 11:07:57,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:07:57,274 INFO L93 Difference]: Finished difference Result 9 states and 21 transitions. [2020-07-01 11:07:57,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:07:57,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 21 transitions. [2020-07-01 11:07:57,278 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:07:57,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 21 transitions. [2020-07-01 11:07:57,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 11:07:57,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 11:07:57,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 21 transitions. [2020-07-01 11:07:57,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:07:57,279 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 21 transitions. [2020-07-01 11:07:57,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 21 transitions. [2020-07-01 11:07:57,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-07-01 11:07:57,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 11:07:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 21 transitions. [2020-07-01 11:07:57,281 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 21 transitions. [2020-07-01 11:07:57,282 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 21 transitions. [2020-07-01 11:07:57,282 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 11:07:57,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 21 transitions. [2020-07-01 11:07:57,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:07:57,283 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:07:57,283 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:07:57,283 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-01 11:07:57,283 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:07:57,284 INFO L794 eck$LassoCheckResult]: Stem: 58#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_8) (= (+ v_ULTIMATE.start_main_~id~0_8 1) v_ULTIMATE.start_main_~tmp~0_9) (< v_ULTIMATE.start_main_~id~0_8 v_ULTIMATE.start_main_~maxId~0_8)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_8, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 59#L22-2 [51] L22-2-->L22: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 60#L22 [43] L22-->L22-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_5 v_ULTIMATE.start_main_~maxId~0_5) (= v_ULTIMATE.start_main_~tmp~0_4 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 61#L22-2 [2020-07-01 11:07:57,284 INFO L796 eck$LassoCheckResult]: Loop: 61#L22-2 [49] L22-2-->L22: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 65#L22 [43] L22-->L22-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_5 v_ULTIMATE.start_main_~maxId~0_5) (= v_ULTIMATE.start_main_~tmp~0_4 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 61#L22-2 [2020-07-01 11:07:57,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,284 INFO L82 PathProgramCache]: Analyzing trace with hash 83309, now seen corresponding path program 1 times [2020-07-01 11:07:57,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325589637] [2020-07-01 11:07:57,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:07:57,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325589637] [2020-07-01 11:07:57,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:07:57,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-07-01 11:07:57,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115475999] [2020-07-01 11:07:57,302 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-07-01 11:07:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2523, now seen corresponding path program 1 times [2020-07-01 11:07:57,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369471249] [2020-07-01 11:07:57,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,310 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:57,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:07:57,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-01 11:07:57,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-01 11:07:57,331 INFO L87 Difference]: Start difference. First operand 9 states and 21 transitions. cyclomatic complexity: 14 Second operand 3 states. [2020-07-01 11:07:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:07:57,351 INFO L93 Difference]: Finished difference Result 11 states and 22 transitions. [2020-07-01 11:07:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-01 11:07:57,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 22 transitions. [2020-07-01 11:07:57,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:07:57,354 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 20 transitions. [2020-07-01 11:07:57,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-07-01 11:07:57,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-07-01 11:07:57,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 20 transitions. [2020-07-01 11:07:57,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:07:57,355 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 20 transitions. [2020-07-01 11:07:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 20 transitions. [2020-07-01 11:07:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-07-01 11:07:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-01 11:07:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2020-07-01 11:07:57,357 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 19 transitions. [2020-07-01 11:07:57,357 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 19 transitions. [2020-07-01 11:07:57,357 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2020-07-01 11:07:57,357 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 19 transitions. [2020-07-01 11:07:57,358 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-07-01 11:07:57,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:07:57,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:07:57,359 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 11:07:57,359 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:07:57,359 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_8) (= (+ v_ULTIMATE.start_main_~id~0_8 1) v_ULTIMATE.start_main_~tmp~0_9) (< v_ULTIMATE.start_main_~id~0_8 v_ULTIMATE.start_main_~maxId~0_8)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_8, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 85#L22-2 [51] L22-2-->L22: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 88#L22 [32] L22-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 89#L22-2 [51] L22-2-->L22: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 86#L22 [43] L22-->L22-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_5 v_ULTIMATE.start_main_~maxId~0_5) (= v_ULTIMATE.start_main_~tmp~0_4 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 87#L22-2 [2020-07-01 11:07:57,359 INFO L796 eck$LassoCheckResult]: Loop: 87#L22-2 [49] L22-2-->L22: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 91#L22 [43] L22-->L22-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_5 v_ULTIMATE.start_main_~maxId~0_5) (= v_ULTIMATE.start_main_~tmp~0_4 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 87#L22-2 [2020-07-01 11:07:57,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,360 INFO L82 PathProgramCache]: Analyzing trace with hash 80051002, now seen corresponding path program 1 times [2020-07-01 11:07:57,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322490630] [2020-07-01 11:07:57,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,374 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2523, now seen corresponding path program 2 times [2020-07-01 11:07:57,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119342910] [2020-07-01 11:07:57,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,382 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:57,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,382 INFO L82 PathProgramCache]: Analyzing trace with hash -380396844, now seen corresponding path program 1 times [2020-07-01 11:07:57,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490010017] [2020-07-01 11:07:57,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 11:07:57,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490010017] [2020-07-01 11:07:57,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600671322] [2020-07-01 11:07:57,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:07:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:57,440 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 11:07:57,441 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:07:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-01 11:07:57,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-01 11:07:57,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2020-07-01 11:07:57,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087530624] [2020-07-01 11:07:57,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:07:57,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 11:07:57,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-01 11:07:57,487 INFO L87 Difference]: Start difference. First operand 9 states and 19 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-07-01 11:07:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:07:57,512 INFO L93 Difference]: Finished difference Result 11 states and 23 transitions. [2020-07-01 11:07:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 11:07:57,513 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 23 transitions. [2020-07-01 11:07:57,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-07-01 11:07:57,515 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 23 transitions. [2020-07-01 11:07:57,515 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-07-01 11:07:57,515 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 11:07:57,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 23 transitions. [2020-07-01 11:07:57,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:07:57,516 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 23 transitions. [2020-07-01 11:07:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 23 transitions. [2020-07-01 11:07:57,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-07-01 11:07:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 11:07:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 21 transitions. [2020-07-01 11:07:57,518 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 21 transitions. [2020-07-01 11:07:57,518 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 21 transitions. [2020-07-01 11:07:57,518 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2020-07-01 11:07:57,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 21 transitions. [2020-07-01 11:07:57,519 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:07:57,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:07:57,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:07:57,519 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 11:07:57,519 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:07:57,520 INFO L794 eck$LassoCheckResult]: Stem: 132#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_8) (= (+ v_ULTIMATE.start_main_~id~0_8 1) v_ULTIMATE.start_main_~tmp~0_9) (< v_ULTIMATE.start_main_~id~0_8 v_ULTIMATE.start_main_~maxId~0_8)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_8, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 133#L22-2 [51] L22-2-->L22: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 136#L22 [32] L22-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 137#L22-2 [51] L22-2-->L22: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 134#L22 [43] L22-->L22-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_5 v_ULTIMATE.start_main_~maxId~0_5) (= v_ULTIMATE.start_main_~tmp~0_4 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 135#L22-2 [2020-07-01 11:07:57,520 INFO L796 eck$LassoCheckResult]: Loop: 135#L22-2 [48] L22-2-->L22: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 140#L22 [43] L22-->L22-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_5 v_ULTIMATE.start_main_~maxId~0_5) (= v_ULTIMATE.start_main_~tmp~0_4 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 135#L22-2 [2020-07-01 11:07:57,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,520 INFO L82 PathProgramCache]: Analyzing trace with hash 80051002, now seen corresponding path program 2 times [2020-07-01 11:07:57,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149623590] [2020-07-01 11:07:57,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,533 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:57,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2492, now seen corresponding path program 1 times [2020-07-01 11:07:57,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776835478] [2020-07-01 11:07:57,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,542 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash -380396875, now seen corresponding path program 1 times [2020-07-01 11:07:57,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834729814] [2020-07-01 11:07:57,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-01 11:07:57,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834729814] [2020-07-01 11:07:57,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358412541] [2020-07-01 11:07:57,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-01 11:07:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:57,603 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-01 11:07:57,604 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:07:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-01 11:07:57,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-01 11:07:57,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-07-01 11:07:57,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671117918] [2020-07-01 11:07:57,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:07:57,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 11:07:57,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-01 11:07:57,642 INFO L87 Difference]: Start difference. First operand 10 states and 21 transitions. cyclomatic complexity: 13 Second operand 4 states. [2020-07-01 11:07:57,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:07:57,672 INFO L93 Difference]: Finished difference Result 10 states and 20 transitions. [2020-07-01 11:07:57,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 11:07:57,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 20 transitions. [2020-07-01 11:07:57,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:07:57,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 20 transitions. [2020-07-01 11:07:57,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 11:07:57,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-07-01 11:07:57,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 20 transitions. [2020-07-01 11:07:57,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:07:57,676 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 20 transitions. [2020-07-01 11:07:57,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 20 transitions. [2020-07-01 11:07:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-07-01 11:07:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-01 11:07:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 20 transitions. [2020-07-01 11:07:57,679 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 20 transitions. [2020-07-01 11:07:57,679 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 20 transitions. [2020-07-01 11:07:57,679 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2020-07-01 11:07:57,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 20 transitions. [2020-07-01 11:07:57,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-07-01 11:07:57,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:07:57,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:07:57,680 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 11:07:57,680 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-01 11:07:57,681 INFO L794 eck$LassoCheckResult]: Stem: 181#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_8) (= (+ v_ULTIMATE.start_main_~id~0_8 1) v_ULTIMATE.start_main_~tmp~0_9) (< v_ULTIMATE.start_main_~id~0_8 v_ULTIMATE.start_main_~maxId~0_8)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_8, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 182#L22-2 [51] L22-2-->L22: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 185#L22 [32] L22-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 186#L22-2 [51] L22-2-->L22: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 183#L22 [43] L22-->L22-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_5 v_ULTIMATE.start_main_~maxId~0_5) (= v_ULTIMATE.start_main_~tmp~0_4 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 184#L22-2 [2020-07-01 11:07:57,681 INFO L796 eck$LassoCheckResult]: Loop: 184#L22-2 [48] L22-2-->L22: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 189#L22 [32] L22-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 190#L22-2 [49] L22-2-->L22: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 188#L22 [43] L22-->L22-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_5 v_ULTIMATE.start_main_~maxId~0_5) (= v_ULTIMATE.start_main_~tmp~0_4 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 184#L22-2 [2020-07-01 11:07:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,681 INFO L82 PathProgramCache]: Analyzing trace with hash 80051002, now seen corresponding path program 3 times [2020-07-01 11:07:57,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597477905] [2020-07-01 11:07:57,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,695 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:57,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,695 INFO L82 PathProgramCache]: Analyzing trace with hash 2385803, now seen corresponding path program 1 times [2020-07-01 11:07:57,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655451785] [2020-07-01 11:07:57,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:07:57,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655451785] [2020-07-01 11:07:57,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 11:07:57,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-01 11:07:57,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19402776] [2020-07-01 11:07:57,720 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-07-01 11:07:57,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 11:07:57,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 11:07:57,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 11:07:57,721 INFO L87 Difference]: Start difference. First operand 10 states and 20 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-07-01 11:07:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 11:07:57,747 INFO L93 Difference]: Finished difference Result 8 states and 14 transitions. [2020-07-01 11:07:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-01 11:07:57,748 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 14 transitions. [2020-07-01 11:07:57,749 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:07:57,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 14 transitions. [2020-07-01 11:07:57,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-07-01 11:07:57,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-07-01 11:07:57,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 14 transitions. [2020-07-01 11:07:57,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 11:07:57,750 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 14 transitions. [2020-07-01 11:07:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 14 transitions. [2020-07-01 11:07:57,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-07-01 11:07:57,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-01 11:07:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2020-07-01 11:07:57,751 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-07-01 11:07:57,752 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 12 transitions. [2020-07-01 11:07:57,752 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2020-07-01 11:07:57,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 12 transitions. [2020-07-01 11:07:57,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-07-01 11:07:57,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:07:57,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:07:57,753 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-07-01 11:07:57,753 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-07-01 11:07:57,754 INFO L794 eck$LassoCheckResult]: Stem: 206#ULTIMATE.startENTRY [54] ULTIMATE.startENTRY-->L22-2: Formula: (and (<= 0 v_ULTIMATE.start_main_~id~0_8) (= (+ v_ULTIMATE.start_main_~id~0_8 1) v_ULTIMATE.start_main_~tmp~0_9) (< v_ULTIMATE.start_main_~id~0_8 v_ULTIMATE.start_main_~maxId~0_8)) InVars {} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_8, ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_6|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_6|, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_9, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_6|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_6|, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~maxId~0, ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_#t~nondet2, ULTIMATE.start_main_#res, ULTIMATE.start_main_~id~0] 207#L22-2 [51] L22-2-->L22: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 210#L22 [32] L22-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 211#L22-2 [51] L22-2-->L22: Formula: (and (> 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (> v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 208#L22 [43] L22-->L22-2: Formula: (and (> v_ULTIMATE.start_main_~tmp~0_5 v_ULTIMATE.start_main_~maxId~0_5) (= v_ULTIMATE.start_main_~tmp~0_4 0)) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_5} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_5, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 209#L22-2 [2020-07-01 11:07:57,754 INFO L796 eck$LassoCheckResult]: Loop: 209#L22-2 [48] L22-2-->L22: Formula: (and (< 0 |v_ULTIMATE.start_main_#t~nondet2_5|) (< v_ULTIMATE.start_main_~tmp~0_8 v_ULTIMATE.start_main_~id~0_7)) InVars {ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_5|} OutVars{ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_8, ULTIMATE.start_main_~id~0=v_ULTIMATE.start_main_~id~0_7, ULTIMATE.start_main_#t~nondet2=|v_ULTIMATE.start_main_#t~nondet2_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet2] 212#L22 [32] L22-->L22-2: Formula: (and (<= v_ULTIMATE.start_main_~tmp~0_2 v_ULTIMATE.start_main_~maxId~0_1) (= v_ULTIMATE.start_main_~tmp~0_1 (+ v_ULTIMATE.start_main_~tmp~0_2 1))) InVars {ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_2} OutVars{ULTIMATE.start_main_~maxId~0=v_ULTIMATE.start_main_~maxId~0_1, ULTIMATE.start_main_~tmp~0=v_ULTIMATE.start_main_~tmp~0_1} AuxVars[] AssignedVars[ULTIMATE.start_main_~tmp~0] 209#L22-2 [2020-07-01 11:07:57,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,754 INFO L82 PathProgramCache]: Analyzing trace with hash 80051002, now seen corresponding path program 4 times [2020-07-01 11:07:57,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459307490] [2020-07-01 11:07:57,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,767 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:57,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2481, now seen corresponding path program 2 times [2020-07-01 11:07:57,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863287668] [2020-07-01 11:07:57,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,775 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:57,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:57,775 INFO L82 PathProgramCache]: Analyzing trace with hash -380396886, now seen corresponding path program 2 times [2020-07-01 11:07:57,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:07:57,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989963861] [2020-07-01 11:07:57,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:07:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:07:57,790 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:07:57,812 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:07:57,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:07:57,812 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:07:57,813 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:07:57,813 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 11:07:57,813 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:07:57,813 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:07:57,813 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:07:57,813 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 11:07:57,813 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:07:57,813 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:07:57,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:07:57,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:07:57,856 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:07:57,857 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:07:57,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:07:57,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:07:57,866 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-07-01 11:07:57,866 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=1} Honda state: {ULTIMATE.start_main_#t~nondet2=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:07:57,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 11:07:57,900 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:07:57,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 11:07:57,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 11:07:58,155 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 11:07:58,158 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 11:07:58,158 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 11:07:58,159 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 11:07:58,159 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 11:07:58,159 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 11:07:58,159 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:07:58,159 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 11:07:58,159 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 11:07:58,159 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration6_Loop [2020-07-01 11:07:58,160 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 11:07:58,160 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 11:07:58,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:07:58,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 11:07:58,202 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 11:07:58,202 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:07:58,208 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:07:58,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:07:58,210 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:07:58,210 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:07:58,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:07:58,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:07:58,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:07:58,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:07:58,214 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:07:58,251 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 11:07:58,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 11:07:58,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 11:07:58,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 11:07:58,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 11:07:58,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 11:07:58,255 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 11:07:58,255 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 11:07:58,259 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 11:07:58,262 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 11:07:58,263 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 11:07:58,267 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 11:07:58,268 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 11:07:58,268 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 11:07:58,268 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_~maxId~0) = -2*ULTIMATE.start_main_~tmp~0 + 2*ULTIMATE.start_main_~maxId~0 + 1 Supporting invariants [] [2020-07-01 11:07:58,300 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 11:07:58,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:07:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:58,333 INFO L264 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 11:07:58,334 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:07:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 11:07:58,340 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 11:07:58,340 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 11:07:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 11:07:58,342 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2020-07-01 11:07:58,342 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-07-01 11:07:58,342 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-07-01 11:07:58,361 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 7 states and 12 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 9 states and 18 transitions. Complement of second has 4 states. [2020-07-01 11:07:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 11:07:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 11:07:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-07-01 11:07:58,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 5 letters. Loop has 2 letters. [2020-07-01 11:07:58,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:07:58,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 7 letters. Loop has 2 letters. [2020-07-01 11:07:58,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:07:58,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 5 letters. Loop has 4 letters. [2020-07-01 11:07:58,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 11:07:58,364 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 18 transitions. [2020-07-01 11:07:58,365 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:07:58,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2020-07-01 11:07:58,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 11:07:58,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 11:07:58,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 11:07:58,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 11:07:58,366 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:07:58,366 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:07:58,366 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 11:07:58,366 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2020-07-01 11:07:58,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 11:07:58,367 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 11:07:58,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 11:07:58,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:07:58 BasicIcfg [2020-07-01 11:07:58,374 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:07:58,376 INFO L168 Benchmark]: Toolchain (without parser) took 2903.24 ms. Allocated memory was 649.6 MB in the beginning and 682.6 MB in the end (delta: 33.0 MB). Free memory was 561.7 MB in the beginning and 420.6 MB in the end (delta: 141.2 MB). Peak memory consumption was 174.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:07:58,377 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 584.4 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:07:58,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.85 ms. Allocated memory was 649.6 MB in the beginning and 682.6 MB in the end (delta: 33.0 MB). Free memory was 561.7 MB in the beginning and 647.0 MB in the end (delta: -85.3 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:07:58,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.45 ms. Allocated memory is still 682.6 MB. Free memory was 647.0 MB in the beginning and 645.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:07:58,378 INFO L168 Benchmark]: Boogie Preprocessor took 19.63 ms. Allocated memory is still 682.6 MB. Free memory was 645.7 MB in the beginning and 644.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. [2020-07-01 11:07:58,379 INFO L168 Benchmark]: RCFGBuilder took 235.66 ms. Allocated memory is still 682.6 MB. Free memory was 644.3 MB in the beginning and 628.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:07:58,379 INFO L168 Benchmark]: BlockEncodingV2 took 81.16 ms. Allocated memory is still 682.6 MB. Free memory was 628.7 MB in the beginning and 622.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:07:58,380 INFO L168 Benchmark]: TraceAbstraction took 143.06 ms. Allocated memory is still 682.6 MB. Free memory was 622.0 MB in the beginning and 613.8 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:07:58,380 INFO L168 Benchmark]: BuchiAutomizer took 2086.64 ms. Allocated memory is still 682.6 MB. Free memory was 613.8 MB in the beginning and 420.6 MB in the end (delta: 193.3 MB). Peak memory consumption was 193.3 MB. Max. memory is 50.3 GB. [2020-07-01 11:07:58,383 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 3 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 649.6 MB. Free memory is still 584.4 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 296.85 ms. Allocated memory was 649.6 MB in the beginning and 682.6 MB in the end (delta: 33.0 MB). Free memory was 561.7 MB in the beginning and 647.0 MB in the end (delta: -85.3 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.45 ms. Allocated memory is still 682.6 MB. Free memory was 647.0 MB in the beginning and 645.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.63 ms. Allocated memory is still 682.6 MB. Free memory was 645.7 MB in the beginning and 644.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 50.3 GB. * RCFGBuilder took 235.66 ms. Allocated memory is still 682.6 MB. Free memory was 644.3 MB in the beginning and 628.7 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 81.16 ms. Allocated memory is still 682.6 MB. Free memory was 628.7 MB in the beginning and 622.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 50.3 GB. * TraceAbstraction took 143.06 ms. Allocated memory is still 682.6 MB. Free memory was 622.0 MB in the beginning and 613.8 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 2086.64 ms. Allocated memory is still 682.6 MB. Free memory was 613.8 MB in the beginning and 420.6 MB in the end (delta: 193.3 MB). Peak memory consumption was 193.3 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 3 locations, 0 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.0s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 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 7 terminating modules (5 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function -2 * tmp + 2 * maxId + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * tmp + 2 * maxId + 1 and consists of 3 locations. 5 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 10 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 34 SDslu, 0 SDs, 0 SdLazy, 95 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc2 concLT1 SILN1 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp81 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 11:07:52.049 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp/BenchExec_run_IqO_Dc/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:07:59.418 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check