/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 12:03:06,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:03:06,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:03:06,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:03:06,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:03:06,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:03:06,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:03:06,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:03:06,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:03:06,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:03:06,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:03:06,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:03:06,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:03:06,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:03:06,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:03:06,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:03:06,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:03:06,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:03:06,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:03:06,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:03:06,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:03:06,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:03:06,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:03:06,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:03:06,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:03:06,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:03:06,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:03:06,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:03:06,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:03:06,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:03:06,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:03:06,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:03:06,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:03:06,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:03:06,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:03:06,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:03:06,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:03:06,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:03:06,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:03:06,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:03:06,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:03:06,858 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 12:03:06,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:03:06,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:03:06,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:03:06,874 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:03:06,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:03:06,874 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:03:06,874 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:03:06,874 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:03:06,875 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:03:06,875 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:03:06,875 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:03:06,875 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:03:06,875 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:03:06,875 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:03:06,876 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:03:06,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:03:06,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:03:06,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:03:06,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:03:06,877 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:03:06,877 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:03:06,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:03:06,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:03:06,877 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:03:06,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:03:06,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:03:06,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:03:06,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:03:06,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:03:07,042 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:03:07,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:03:07,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:03:07,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:03:07,061 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:03:07,062 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:03:07,137 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_WxVdWL/tmp/2ab0d1b4566e4a499fe17397da63b686/FLAG043c2b607 [2020-07-01 12:03:07,459 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:03:07,460 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 12:03:07,466 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_WxVdWL/tmp/2ab0d1b4566e4a499fe17397da63b686/FLAG043c2b607 [2020-07-01 12:03:07,887 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_WxVdWL/tmp/2ab0d1b4566e4a499fe17397da63b686 [2020-07-01 12:03:07,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:03:07,900 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:03:07,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:03:07,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:03:07,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:03:07,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:03:07" (1/1) ... [2020-07-01 12:03:07,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60863ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:07, skipping insertion in model container [2020-07-01 12:03:07,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:03:07" (1/1) ... [2020-07-01 12:03:07,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:03:07,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:03:08,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:03:08,161 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:03:08,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:03:08,190 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:03:08,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08 WrapperNode [2020-07-01 12:03:08,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:03:08,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:03:08,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:03:08,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:03:08,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:03:08,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:03:08,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:03:08,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:03:08,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:03:08,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:03:08,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:03:08,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:03:08,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (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 12:03:08,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:03:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:03:08,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:03:08,475 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:03:08,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:03:08 BoogieIcfgContainer [2020-07-01 12:03:08,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:03:08,479 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:03:08,479 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:03:08,481 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:03:08,482 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:03:08" (1/1) ... [2020-07-01 12:03:08,494 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 10 edges [2020-07-01 12:03:08,495 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:03:08,496 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:03:08,497 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:03:08,497 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:03:08,499 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:03:08,499 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:03:08,500 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:03:08,512 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:03:08,519 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 12:03:08,524 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:03:08,526 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:03:08,545 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2020-07-01 12:03:08,547 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-07-01 12:03:08,548 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:03:08,548 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:03:08,549 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:03:08,549 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:03:08,549 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 5 edges [2020-07-01 12:03:08,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:03:08 BasicIcfg [2020-07-01 12:03:08,550 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:03:08,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:03:08,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:03:08,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:03:08,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:03:07" (1/4) ... [2020-07-01 12:03:08,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa5f793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:03:08, skipping insertion in model container [2020-07-01 12:03:08,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (2/4) ... [2020-07-01 12:03:08,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa5f793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:03:08, skipping insertion in model container [2020-07-01 12:03:08,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:03:08" (3/4) ... [2020-07-01 12:03:08,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fa5f793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:03:08, skipping insertion in model container [2020-07-01 12:03:08,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:03:08" (4/4) ... [2020-07-01 12:03:08,559 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:03:08,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:03:08,576 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:03:08,590 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:03:08,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:03:08,613 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:03:08,613 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:03:08,613 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:03:08,613 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:03:08,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:03:08,614 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:03:08,614 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:03:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 12:03:08,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:03:08,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 12:03:08,689 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:03:08,689 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-01 12:03:08,689 INFO L271 CegarLoopResult]: At program point L6-1(lines 4 8) the Hoare annotation is: true [2020-07-01 12:03:08,690 INFO L271 CegarLoopResult]: At program point L4-2(lines 4 8) the Hoare annotation is: true [2020-07-01 12:03:08,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:03:08 BasicIcfg [2020-07-01 12:03:08,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:03:08,699 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:03:08,699 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:03:08,702 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:03:08,703 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:03:08,703 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:03:07" (1/5) ... [2020-07-01 12:03:08,704 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1aba66b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:03:08, skipping insertion in model container [2020-07-01 12:03:08,704 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:03:08,704 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:03:08" (2/5) ... [2020-07-01 12:03:08,705 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1aba66b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:03:08, skipping insertion in model container [2020-07-01 12:03:08,705 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:03:08,705 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:03:08" (3/5) ... [2020-07-01 12:03:08,705 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1aba66b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:03:08, skipping insertion in model container [2020-07-01 12:03:08,705 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:03:08,706 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:03:08" (4/5) ... [2020-07-01 12:03:08,706 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1aba66b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:03:08, skipping insertion in model container [2020-07-01 12:03:08,706 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:03:08,706 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:03:08" (5/5) ... [2020-07-01 12:03:08,709 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:03:08,737 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:03:08,737 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:03:08,737 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:03:08,737 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:03:08,738 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:03:08,738 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:03:08,738 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:03:08,738 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:03:08,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 12:03:08,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 12:03:08,759 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:03:08,759 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:03:08,765 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:03:08,765 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:03:08,765 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:03:08,765 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 12:03:08,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 12:03:08,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:03:08,766 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:03:08,766 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:03:08,766 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:03:08,771 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [25] ULTIMATE.startENTRY-->L4-2: Formula: (and (= v_ULTIMATE.start_main_~i~0_1 0) (= v_ULTIMATE.start_main_~c~0_1 0)) InVars {} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_1, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#t~post1=|v_ULTIMATE.start_main_#t~post1_1|, ULTIMATE.start_main_#t~post0=|v_ULTIMATE.start_main_#t~post0_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res, ULTIMATE.start_main_~c~0, ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~post1, ULTIMATE.start_main_#t~post0] 6#L4-2true [2020-07-01 12:03:08,772 INFO L796 eck$LassoCheckResult]: Loop: 6#L4-2true [29] L4-2-->L6-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 3#L6-1true [24] L6-1-->L6: Formula: (and (= (+ v_ULTIMATE.start_main_~i~0_6 1) v_ULTIMATE.start_main_~i~0_5) (< v_ULTIMATE.start_main_~i~0_6 20)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_5, ULTIMATE.start_main_#t~post0=|v_ULTIMATE.start_main_#t~post0_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0, ULTIMATE.start_main_#t~post0] 5#L6true [34] L6-->L4-2: Formula: (and (> v_ULTIMATE.start_main_~i~0_8 10) (= (+ v_ULTIMATE.start_main_~c~0_6 1) v_ULTIMATE.start_main_~c~0_5)) InVars {ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_6, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~c~0=v_ULTIMATE.start_main_~c~0_5, ULTIMATE.start_main_#t~post1=|v_ULTIMATE.start_main_#t~post1_2|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[ULTIMATE.start_main_~c~0, ULTIMATE.start_main_#t~post1] 6#L4-2true [2020-07-01 12:03:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:03:08,778 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2020-07-01 12:03:08,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:03:08,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605351265] [2020-07-01 12:03:08,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:03:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:03:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:03:08,858 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:03:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:03:08,860 INFO L82 PathProgramCache]: Analyzing trace with hash 58438, now seen corresponding path program 1 times [2020-07-01 12:03:08,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:03:08,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240755512] [2020-07-01 12:03:08,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:03:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:03:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:03:08,877 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:03:08,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:03:08,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1696943, now seen corresponding path program 1 times [2020-07-01 12:03:08,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:03:08,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400695614] [2020-07-01 12:03:08,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:03:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:03:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:03:08,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400695614] [2020-07-01 12:03:08,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-01 12:03:08,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-01 12:03:08,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807406124] [2020-07-01 12:03:08,984 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:03:08,984 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:03:08,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:03:08,985 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:03:08,985 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:03:08,985 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:03:08,985 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:03:08,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:03:08,986 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:03:08,986 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:03:08,986 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:03:09,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:03:09,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:03:09,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:03:09,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:03:09,105 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:03:09,106 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 12:03:09,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:03:09,111 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 12:03:09,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:03:09,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:03:09,189 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:03:09,191 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:03:09,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:03:09,191 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:03:09,191 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:03:09,191 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:03:09,192 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:03:09,192 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:03:09,192 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:03:09,192 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:03:09,192 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:03:09,192 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:03:09,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:03:09,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:03:09,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:03:09,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:03:09,288 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:03:09,294 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 12:03:09,300 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-07-01 12:03:09,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:03:09,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:03:09,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:03:09,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:03:09,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:03:09,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:03:09,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:03:09,314 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:03:09,322 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-07-01 12:03:09,322 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 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 12:03:09,332 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:03:09,332 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:03:09,333 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:03:09,333 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 39 Supporting invariants [] [2020-07-01 12:03:09,367 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:03:09,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:03:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:03:09,405 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:03:09,406 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:03:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:03:09,416 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:03:09,416 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:03:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:03:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:03:09,486 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:03:09,487 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:03:09,488 INFO L98 LoopCannibalizer]: 3 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:03:09,493 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-07-01 12:03:09,494 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 4 states. [2020-07-01 12:03:09,553 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 4 states. Result 10 states and 11 transitions. Complement of second has 6 states. [2020-07-01 12:03:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-07-01 12:03:09,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-01 12:03:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-07-01 12:03:09,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 12:03:09,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:03:09,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 12:03:09,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:03:09,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 12:03:09,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:03:09,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2020-07-01 12:03:09,569 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:03:09,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-07-01 12:03:09,573 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:03:09,573 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:03:09,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:03:09,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:03:09,574 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:03:09,574 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:03:09,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-01 12:03:09,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-01 12:03:09,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-01 12:03:09,577 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-07-01 12:03:09,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-01 12:03:09,580 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-01 12:03:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-01 12:03:09,583 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-07-01 12:03:09,583 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:03:09,583 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-07-01 12:03:09,583 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-07-01 12:03:09,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-07-01 12:03:09,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-07-01 12:03:09,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-01 12:03:09,584 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:03:09,584 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:03:09,584 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-01 12:03:09,584 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:03:09,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-07-01 12:03:09,584 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-07-01 12:03:09,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-07-01 12:03:09,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:03:09 BasicIcfg [2020-07-01 12:03:09,590 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:03:09,593 INFO L168 Benchmark]: Toolchain (without parser) took 1692.84 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 556.3 MB in the beginning and 537.8 MB in the end (delta: 18.5 MB). Peak memory consumption was 59.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:03:09,594 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:03:09,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.45 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 556.3 MB in the beginning and 655.4 MB in the end (delta: -99.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. [2020-07-01 12:03:09,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.28 ms. Allocated memory is still 691.0 MB. Free memory was 655.4 MB in the beginning and 654.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:03:09,595 INFO L168 Benchmark]: Boogie Preprocessor took 19.24 ms. Allocated memory is still 691.0 MB. Free memory was 654.1 MB in the beginning and 652.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:03:09,596 INFO L168 Benchmark]: RCFGBuilder took 232.99 ms. Allocated memory is still 691.0 MB. Free memory was 652.7 MB in the beginning and 638.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:03:09,596 INFO L168 Benchmark]: BlockEncodingV2 took 70.66 ms. Allocated memory is still 691.0 MB. Free memory was 638.5 MB in the beginning and 633.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:03:09,597 INFO L168 Benchmark]: TraceAbstraction took 147.34 ms. Allocated memory is still 691.0 MB. Free memory was 633.1 MB in the beginning and 623.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:03:09,598 INFO L168 Benchmark]: BuchiAutomizer took 891.78 ms. Allocated memory is still 691.0 MB. Free memory was 623.6 MB in the beginning and 537.8 MB in the end (delta: 85.9 MB). Peak memory consumption was 85.9 MB. Max. memory is 50.3 GB. [2020-07-01 12:03:09,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 10 edges - StatisticsResult: Encoded RCFG 4 locations, 5 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 577.9 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 290.45 ms. Allocated memory was 649.6 MB in the beginning and 691.0 MB in the end (delta: 41.4 MB). Free memory was 556.3 MB in the beginning and 655.4 MB in the end (delta: -99.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.28 ms. Allocated memory is still 691.0 MB. Free memory was 655.4 MB in the beginning and 654.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.24 ms. Allocated memory is still 691.0 MB. Free memory was 654.1 MB in the beginning and 652.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 232.99 ms. Allocated memory is still 691.0 MB. Free memory was 652.7 MB in the beginning and 638.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 70.66 ms. Allocated memory is still 691.0 MB. Free memory was 638.5 MB in the beginning and 633.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 147.34 ms. Allocated memory is still 691.0 MB. Free memory was 633.1 MB in the beginning and 623.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 891.78 ms. Allocated memory is still 691.0 MB. Free memory was 623.6 MB in the beginning and 537.8 MB in the end (delta: 85.9 MB). Peak memory consumption was 85.9 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 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=4occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 2 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function -2 * i + 39 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 8 SDslu, 3 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp72 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! !SESSION 2020-07-01 12:03:04.656 ----------------------------------------------- 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_WxVdWL/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:03:10.034 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check