/export/starexec/sandbox2/solver/bin/starexec_run_default /export/starexec/sandbox2/benchmark/theBenchmark.c /export/starexec/sandbox2/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 10:33:10,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 10:33:10,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 10:33:10,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 10:33:10,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 10:33:10,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 10:33:10,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 10:33:10,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 10:33:10,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 10:33:10,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 10:33:10,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 10:33:10,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 10:33:10,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 10:33:10,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 10:33:10,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 10:33:10,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 10:33:10,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 10:33:10,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 10:33:10,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 10:33:10,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 10:33:10,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 10:33:10,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 10:33:10,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 10:33:10,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 10:33:10,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 10:33:10,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 10:33:10,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 10:33:10,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 10:33:10,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 10:33:10,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 10:33:10,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 10:33:10,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 10:33:10,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 10:33:10,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 10:33:10,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 10:33:10,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 10:33:10,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 10:33:10,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 10:33:10,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 10:33:10,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 10:33:10,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 10:33:10,851 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 10:33:10,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 10:33:10,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 10:33:10,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 10:33:10,867 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 10:33:10,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 10:33:10,868 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:33:10,868 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 10:33:10,868 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 10:33:10,868 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 10:33:10,868 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 10:33:10,868 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 10:33:10,869 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 10:33:10,869 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 10:33:10,869 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 10:33:10,869 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 10:33:10,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 10:33:10,870 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 10:33:10,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 10:33:10,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 10:33:10,870 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 10:33:10,870 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 10:33:10,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 10:33:10,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 10:33:10,871 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 10:33:10,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 10:33:10,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 10:33:10,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 10:33:10,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 10:33:10,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 10:33:11,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 10:33:11,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 10:33:11,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 10:33:11,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 10:33:11,061 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 10:33:11,062 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:33:11,136 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_qjkiu2/tmp/b9f6f431cfac454890e07ba1f1e48ba2/FLAGf97ff51be [2020-07-01 10:33:11,461 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 10:33:11,462 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 10:33:11,468 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_qjkiu2/tmp/b9f6f431cfac454890e07ba1f1e48ba2/FLAGf97ff51be [2020-07-01 10:33:11,876 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_qjkiu2/tmp/b9f6f431cfac454890e07ba1f1e48ba2 [2020-07-01 10:33:11,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 10:33:11,889 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 10:33:11,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 10:33:11,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 10:33:11,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 10:33:11,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:33:11" (1/1) ... [2020-07-01 10:33:11,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193ea277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:11, skipping insertion in model container [2020-07-01 10:33:11,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 10:33:11" (1/1) ... [2020-07-01 10:33:11,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 10:33:11,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 10:33:12,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:33:12,152 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 10:33:12,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 10:33:12,180 INFO L208 MainTranslator]: Completed translation [2020-07-01 10:33:12,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12 WrapperNode [2020-07-01 10:33:12,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 10:33:12,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 10:33:12,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 10:33:12,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 10:33:12,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 10:33:12,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 10:33:12,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 10:33:12,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 10:33:12,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 10:33:12,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 10:33:12,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 10:33:12,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 10:33:12,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (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 10:33:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 10:33:12,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 10:33:12,432 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 10:33:12,432 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 10:33:12,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:33:12 BoogieIcfgContainer [2020-07-01 10:33:12,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 10:33:12,436 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 10:33:12,437 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 10:33:12,439 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 10:33:12,439 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:33:12" (1/1) ... [2020-07-01 10:33:12,452 INFO L313 BlockEncoder]: Initial Icfg 6 locations, 7 edges [2020-07-01 10:33:12,453 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 10:33:12,454 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 10:33:12,455 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 10:33:12,455 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 10:33:12,457 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 10:33:12,458 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 10:33:12,458 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 10:33:12,470 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 10:33:12,478 INFO L200 BlockEncoder]: SBE split 0 edges [2020-07-01 10:33:12,483 INFO L70 emoveInfeasibleEdges]: Removed 5 edges and 4 locations because of local infeasibility [2020-07-01 10:33:12,484 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:33:12,486 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:33:12,488 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:33:12,489 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 10:33:12,489 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 10:33:12,489 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 10:33:12,490 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 10:33:12,490 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-07-01 10:33:12,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:33:12 BasicIcfg [2020-07-01 10:33:12,490 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 10:33:12,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 10:33:12,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 10:33:12,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 10:33:12,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 10:33:11" (1/4) ... [2020-07-01 10:33:12,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d49593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:33:12, skipping insertion in model container [2020-07-01 10:33:12,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (2/4) ... [2020-07-01 10:33:12,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d49593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:33:12, skipping insertion in model container [2020-07-01 10:33:12,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:33:12" (3/4) ... [2020-07-01 10:33:12,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d49593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:33:12, skipping insertion in model container [2020-07-01 10:33:12,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:33:12" (4/4) ... [2020-07-01 10:33:12,500 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:33:12,510 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 10:33:12,516 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 10:33:12,530 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 10:33:12,553 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 10:33:12,553 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 10:33:12,553 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:33:12,553 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:33:12,553 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:33:12,554 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 10:33:12,554 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:33:12,554 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 10:33:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-07-01 10:33:12,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 10:33:12,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-07-01 10:33:12,631 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 10:33:12,632 INFO L271 CegarLoopResult]: At program point L15-2(lines 15 19) the Hoare annotation is: true [2020-07-01 10:33:12,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:33:12 BasicIcfg [2020-07-01 10:33:12,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 10:33:12,641 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 10:33:12,641 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 10:33:12,644 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 10:33:12,645 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:33:12,645 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 10:33:11" (1/5) ... [2020-07-01 10:33:12,646 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e44795a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:33:12, skipping insertion in model container [2020-07-01 10:33:12,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:33:12,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 10:33:12" (2/5) ... [2020-07-01 10:33:12,647 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e44795a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 10:33:12, skipping insertion in model container [2020-07-01 10:33:12,647 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:33:12,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:33:12" (3/5) ... [2020-07-01 10:33:12,648 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e44795a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:33:12, skipping insertion in model container [2020-07-01 10:33:12,648 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:33:12,648 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 10:33:12" (4/5) ... [2020-07-01 10:33:12,649 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e44795a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:33:12, skipping insertion in model container [2020-07-01 10:33:12,649 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 10:33:12,649 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:33:12" (5/5) ... [2020-07-01 10:33:12,650 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 10:33:12,679 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 10:33:12,679 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 10:33:12,680 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 10:33:12,680 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 10:33:12,680 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 10:33:12,680 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 10:33:12,680 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 10:33:12,680 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 10:33:12,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 10:33:12,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:33:12,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:33:12,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:33:12,706 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:33:12,706 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:33:12,706 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 10:33:12,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 10:33:12,707 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 10:33:12,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 10:33:12,707 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 10:33:12,707 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 10:33:12,707 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 10:33:12,712 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [18] ULTIMATE.startENTRY-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_~old_x~0=v_ULTIMATE.start_main_~old_x~0_1, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~old_x~0, ULTIMATE.start_main_~x~0] 4#L15-2true [2020-07-01 10:33:12,713 INFO L796 eck$LassoCheckResult]: Loop: 4#L15-2true [22] L15-2-->L15-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_4 (- v_ULTIMATE.start_main_~y~0_5)) (= v_ULTIMATE.start_main_~old_x~0_2 v_ULTIMATE.start_main_~x~0_5) (= v_ULTIMATE.start_main_~y~0_4 v_ULTIMATE.start_main_~old_x~0_2)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_5, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_5} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_4, ULTIMATE.start_main_~old_x~0=v_ULTIMATE.start_main_~old_x~0_2, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_4} AuxVars[] AssignedVars[ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~old_x~0, ULTIMATE.start_main_~x~0] 4#L15-2true [2020-07-01 10:33:12,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:33:12,720 INFO L82 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 1 times [2020-07-01 10:33:12,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:33:12,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515917611] [2020-07-01 10:33:12,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:33:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:33:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:33:12,794 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:33:12,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:33:12,796 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-07-01 10:33:12,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:33:12,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916327672] [2020-07-01 10:33:12,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:33:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:33:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:33:12,812 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:33:12,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 10:33:12,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1541, now seen corresponding path program 1 times [2020-07-01 10:33:12,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 10:33:12,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062415719] [2020-07-01 10:33:12,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 10:33:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:33:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 10:33:12,824 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 10:33:12,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 10:33:12 BasicIcfg [2020-07-01 10:33:12,900 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 10:33:12,903 INFO L168 Benchmark]: Toolchain (without parser) took 1013.18 ms. Allocated memory was 649.6 MB in the beginning and 686.3 MB in the end (delta: 36.7 MB). Free memory was 562.7 MB in the beginning and 602.0 MB in the end (delta: -39.3 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:33:12,903 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 649.6 MB. Free memory is still 589.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 10:33:12,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.21 ms. Allocated memory was 649.6 MB in the beginning and 686.3 MB in the end (delta: 36.7 MB). Free memory was 562.7 MB in the beginning and 649.7 MB in the end (delta: -87.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. [2020-07-01 10:33:12,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.04 ms. Allocated memory is still 686.3 MB. Free memory was 649.7 MB in the beginning and 648.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:33:12,905 INFO L168 Benchmark]: Boogie Preprocessor took 19.36 ms. Allocated memory is still 686.3 MB. Free memory was 648.4 MB in the beginning and 647.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 10:33:12,906 INFO L168 Benchmark]: RCFGBuilder took 200.23 ms. Allocated memory is still 686.3 MB. Free memory was 647.1 MB in the beginning and 634.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. [2020-07-01 10:33:12,907 INFO L168 Benchmark]: BlockEncodingV2 took 54.18 ms. Allocated memory is still 686.3 MB. Free memory was 634.1 MB in the beginning and 629.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:33:12,907 INFO L168 Benchmark]: TraceAbstraction took 148.95 ms. Allocated memory is still 686.3 MB. Free memory was 627.7 MB in the beginning and 619.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 10:33:12,908 INFO L168 Benchmark]: BuchiAutomizer took 259.42 ms. Allocated memory is still 686.3 MB. Free memory was 619.5 MB in the beginning and 602.0 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 50.3 GB. [2020-07-01 10:33:12,913 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 6 locations, 7 edges - StatisticsResult: Encoded RCFG 2 locations, 2 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 649.6 MB. Free memory is still 589.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 291.21 ms. Allocated memory was 649.6 MB in the beginning and 686.3 MB in the end (delta: 36.7 MB). Free memory was 562.7 MB in the beginning and 649.7 MB in the end (delta: -87.1 MB). Peak memory consumption was 28.2 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 34.04 ms. Allocated memory is still 686.3 MB. Free memory was 649.7 MB in the beginning and 648.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.36 ms. Allocated memory is still 686.3 MB. Free memory was 648.4 MB in the beginning and 647.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 200.23 ms. Allocated memory is still 686.3 MB. Free memory was 647.1 MB in the beginning and 634.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 54.18 ms. Allocated memory is still 686.3 MB. Free memory was 634.1 MB in the beginning and 629.0 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 148.95 ms. Allocated memory is still 686.3 MB. Free memory was 627.7 MB in the beginning and 619.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 259.42 ms. Allocated memory is still 686.3 MB. Free memory was 619.5 MB in the beginning and 602.0 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 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: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 2 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=2occurred 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30a558b=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1406e78=0, old_x=0, x=0, y=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int x = __VERIFIER_nondet_int(); [L14] int y = __VERIFIER_nondet_int(); Loop: [L15] COND TRUE 1 [L16] int old_x = x; [L17] x = -y [L18] y = old_x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 10:33:08.588 ----------------------------------------------- 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_qjkiu2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 10:33:13.150 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check