/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 11:48:38,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 11:48:38,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 11:48:38,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 11:48:38,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 11:48:38,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 11:48:38,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 11:48:38,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 11:48:38,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 11:48:38,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 11:48:38,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 11:48:38,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 11:48:38,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 11:48:38,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 11:48:38,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 11:48:38,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 11:48:38,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 11:48:38,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 11:48:38,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 11:48:38,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 11:48:38,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 11:48:38,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 11:48:38,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 11:48:38,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 11:48:38,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 11:48:38,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 11:48:38,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 11:48:38,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 11:48:38,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 11:48:38,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 11:48:38,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 11:48:38,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 11:48:38,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 11:48:38,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 11:48:38,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 11:48:38,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 11:48:38,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 11:48:38,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 11:48:38,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 11:48:38,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 11:48:38,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 11:48:38,788 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf [2020-07-01 11:48:38,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 11:48:38,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 11:48:38,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 11:48:38,803 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 11:48:38,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 11:48:38,803 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:48:38,804 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 11:48:38,804 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 11:48:38,804 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 11:48:38,804 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 11:48:38,804 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 11:48:38,804 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 11:48:38,805 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 11:48:38,805 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 11:48:38,805 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 11:48:38,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 11:48:38,805 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 11:48:38,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 11:48:38,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 11:48:38,806 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 11:48:38,806 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 11:48:38,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 11:48:38,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 11:48:38,806 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 11:48:38,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:48:38,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 11:48:38,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 11:48:38,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 11:48:38,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 11:48:38,976 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 11:48:38,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 11:48:38,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 11:48:38,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 11:48:38,995 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 11:48:38,995 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:48:39,061 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_ziWrCh/tmp/6869616e64824b38b07fd84ad765631b/FLAGe762572ee [2020-07-01 11:48:39,388 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 11:48:39,389 INFO L160 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c [2020-07-01 11:48:39,396 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/BenchExec_run_ziWrCh/tmp/6869616e64824b38b07fd84ad765631b/FLAGe762572ee [2020-07-01 11:48:39,793 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/BenchExec_run_ziWrCh/tmp/6869616e64824b38b07fd84ad765631b [2020-07-01 11:48:39,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 11:48:39,806 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 11:48:39,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 11:48:39,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 11:48:39,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 11:48:39,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:48:39" (1/1) ... [2020-07-01 11:48:39,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d36b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:39, skipping insertion in model container [2020-07-01 11:48:39,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 11:48:39" (1/1) ... [2020-07-01 11:48:39,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 11:48:39,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 11:48:40,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:48:40,051 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 11:48:40,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 11:48:40,080 INFO L208 MainTranslator]: Completed translation [2020-07-01 11:48:40,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40 WrapperNode [2020-07-01 11:48:40,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 11:48:40,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 11:48:40,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 11:48:40,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 11:48:40,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 11:48:40,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 11:48:40,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 11:48:40,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 11:48:40,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 11:48:40,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 11:48:40,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 11:48:40,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 11:48:40,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (1/1) ... No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 11:48:40,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 11:48:40,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 11:48:40,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 11:48:40,358 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 11:48:40,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:48:40 BoogieIcfgContainer [2020-07-01 11:48:40,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 11:48:40,383 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 11:48:40,383 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 11:48:40,385 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 11:48:40,386 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:48:40" (1/1) ... [2020-07-01 11:48:40,399 INFO L313 BlockEncoder]: Initial Icfg 6 locations, 7 edges [2020-07-01 11:48:40,400 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 11:48:40,401 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 11:48:40,402 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 11:48:40,402 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 11:48:40,404 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 11:48:40,404 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 11:48:40,405 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 11:48:40,418 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 11:48:40,432 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 11:48:40,436 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 11:48:40,438 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:48:40,448 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 11:48:40,450 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 11:48:40,452 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 11:48:40,452 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 11:48:40,452 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 11:48:40,452 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 11:48:40,453 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 2 edges [2020-07-01 11:48:40,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:48:40 BasicIcfg [2020-07-01 11:48:40,453 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 11:48:40,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 11:48:40,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 11:48:40,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 11:48:40,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 11:48:39" (1/4) ... [2020-07-01 11:48:40,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb4b137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:48:40, skipping insertion in model container [2020-07-01 11:48:40,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (2/4) ... [2020-07-01 11:48:40,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb4b137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:48:40, skipping insertion in model container [2020-07-01 11:48:40,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:48:40" (3/4) ... [2020-07-01 11:48:40,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb4b137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:48:40, skipping insertion in model container [2020-07-01 11:48:40,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:48:40" (4/4) ... [2020-07-01 11:48:40,462 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:48:40,473 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 11:48:40,480 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 11:48:40,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 11:48:40,521 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 11:48:40,521 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 11:48:40,521 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:48:40,521 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:48:40,522 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:48:40,522 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 11:48:40,522 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:48:40,522 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 11:48:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2 states. [2020-07-01 11:48:40,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 11:48:40,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 2 states. [2020-07-01 11:48:40,599 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 11:48:40,600 INFO L271 CegarLoopResult]: At program point L26-2(lines 26 28) the Hoare annotation is: true [2020-07-01 11:48:40,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:48:40 BasicIcfg [2020-07-01 11:48:40,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 11:48:40,609 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 11:48:40,609 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 11:48:40,612 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 11:48:40,613 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:48:40,613 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 11:48:39" (1/5) ... [2020-07-01 11:48:40,614 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8767ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:48:40, skipping insertion in model container [2020-07-01 11:48:40,614 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:48:40,614 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 11:48:40" (2/5) ... [2020-07-01 11:48:40,615 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8767ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 11:48:40, skipping insertion in model container [2020-07-01 11:48:40,615 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:48:40,615 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:48:40" (3/5) ... [2020-07-01 11:48:40,615 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8767ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:48:40, skipping insertion in model container [2020-07-01 11:48:40,615 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:48:40,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 11:48:40" (4/5) ... [2020-07-01 11:48:40,616 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8767ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:48:40, skipping insertion in model container [2020-07-01 11:48:40,616 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 11:48:40,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 11:48:40" (5/5) ... [2020-07-01 11:48:40,618 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 11:48:40,645 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 11:48:40,645 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 11:48:40,645 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 11:48:40,645 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 11:48:40,646 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 11:48:40,646 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 11:48:40,646 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 11:48:40,646 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 11:48:40,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 11:48:40,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:48:40,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:48:40,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:48:40,673 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:48:40,673 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:48:40,673 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 11:48:40,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2 states. [2020-07-01 11:48:40,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-07-01 11:48:40,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 11:48:40,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 11:48:40,674 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 11:48:40,675 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-07-01 11:48:40,679 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [18] ULTIMATE.startENTRY-->L26-2: Formula: (and (= v_ULTIMATE.start_main_~y~0_1 |v_ULTIMATE.start_main_#t~nondet1_4|) (= v_ULTIMATE.start_main_~x~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|)) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_1, ULTIMATE.start_main_#t~nondet1=|v_ULTIMATE.start_main_#t~nondet1_1|, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_2|} AuxVars[|v_ULTIMATE.start_main_#t~nondet1_4|, |v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#t~nondet1, ULTIMATE.start_main_#res, ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0] 4#L26-2true [2020-07-01 11:48:40,680 INFO L796 eck$LassoCheckResult]: Loop: 4#L26-2true [23] L26-2-->L26-2: Formula: (and (= v_ULTIMATE.start_main_~x~0_7 (+ (* v_ULTIMATE.start_main_~y~0_7 10) (* v_ULTIMATE.start_main_~x~0_8 (- 2)))) (< 0 v_ULTIMATE.start_main_~y~0_7) (< 0 v_ULTIMATE.start_main_~x~0_8)) InVars {ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_8} OutVars{ULTIMATE.start_main_~y~0=v_ULTIMATE.start_main_~y~0_7, ULTIMATE.start_main_~x~0=v_ULTIMATE.start_main_~x~0_7} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0] 4#L26-2true [2020-07-01 11:48:40,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:48:40,686 INFO L82 PathProgramCache]: Analyzing trace with hash 49, now seen corresponding path program 1 times [2020-07-01 11:48:40,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:48:40,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266114600] [2020-07-01 11:48:40,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:48:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:48:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:48:40,769 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:48:40,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:48:40,770 INFO L82 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2020-07-01 11:48:40,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:48:40,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426019523] [2020-07-01 11:48:40,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:48:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:48:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:48:40,786 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:48:40,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 11:48:40,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1542, now seen corresponding path program 1 times [2020-07-01 11:48:40,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 11:48:40,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211813598] [2020-07-01 11:48:40,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 11:48:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:48:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 11:48:40,800 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 11:48:40,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 11:48:40 BasicIcfg [2020-07-01 11:48:40,882 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 11:48:40,884 INFO L168 Benchmark]: Toolchain (without parser) took 1077.98 ms. Allocated memory was 514.9 MB in the beginning and 554.7 MB in the end (delta: 39.8 MB). Free memory was 438.8 MB in the beginning and 474.0 MB in the end (delta: -35.3 MB). Peak memory consumption was 4.6 MB. Max. memory is 50.3 GB. [2020-07-01 11:48:40,885 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 11:48:40,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.67 ms. Allocated memory was 514.9 MB in the beginning and 554.7 MB in the end (delta: 39.8 MB). Free memory was 438.8 MB in the beginning and 522.6 MB in the end (delta: -83.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. [2020-07-01 11:48:40,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.62 ms. Allocated memory is still 554.7 MB. Free memory was 522.6 MB in the beginning and 521.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. [2020-07-01 11:48:40,887 INFO L168 Benchmark]: Boogie Preprocessor took 19.12 ms. Allocated memory is still 554.7 MB. Free memory was 521.0 MB in the beginning and 519.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:48:40,888 INFO L168 Benchmark]: RCFGBuilder took 247.12 ms. Allocated memory is still 554.7 MB. Free memory was 519.8 MB in the beginning and 508.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 50.3 GB. [2020-07-01 11:48:40,888 INFO L168 Benchmark]: BlockEncodingV2 took 70.92 ms. Allocated memory is still 554.7 MB. Free memory was 508.2 MB in the beginning and 503.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 50.3 GB. [2020-07-01 11:48:40,889 INFO L168 Benchmark]: TraceAbstraction took 153.63 ms. Allocated memory is still 554.7 MB. Free memory was 502.3 MB in the beginning and 494.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. [2020-07-01 11:48:40,890 INFO L168 Benchmark]: BuchiAutomizer took 273.28 ms. Allocated memory is still 554.7 MB. Free memory was 494.1 MB in the beginning and 474.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 50.3 GB. [2020-07-01 11:48:40,893 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 0.16 ms. Allocated memory is still 514.9 MB. Free memory is still 458.6 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 274.67 ms. Allocated memory was 514.9 MB in the beginning and 554.7 MB in the end (delta: 39.8 MB). Free memory was 438.8 MB in the beginning and 522.6 MB in the end (delta: -83.9 MB). Peak memory consumption was 28.8 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.62 ms. Allocated memory is still 554.7 MB. Free memory was 522.6 MB in the beginning and 521.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.12 ms. Allocated memory is still 554.7 MB. Free memory was 521.0 MB in the beginning and 519.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 247.12 ms. Allocated memory is still 554.7 MB. Free memory was 519.8 MB in the beginning and 508.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 70.92 ms. Allocated memory is still 554.7 MB. Free memory was 508.2 MB in the beginning and 503.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 50.3 GB. * TraceAbstraction took 153.63 ms. Allocated memory is still 554.7 MB. Free memory was 502.3 MB in the beginning and 494.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 273.28 ms. Allocated memory is still 554.7 MB. Free memory was 494.1 MB in the beginning and 474.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - InvariantResult [Line: 26]: 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: 26]: 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@618ed82f=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7dd1ecf6=0, x=10, y=3} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L23] int x, y; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() Loop: [L26] COND TRUE x > 0 && y > 0 [L27] x = 10*y - 2*x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 11:48:36.584 ----------------------------------------------- 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_ziWrCh/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 11:48:41.129 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check