/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.c /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- NO Ultimate: Cannot open display: This is Ultimate 0.1.25-34f2e62 [2020-07-01 12:15:07,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-01 12:15:07,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-01 12:15:07,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-01 12:15:07,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-01 12:15:07,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-01 12:15:07,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-01 12:15:07,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-01 12:15:07,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-01 12:15:07,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-01 12:15:07,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-01 12:15:07,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-01 12:15:07,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-01 12:15:07,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-01 12:15:07,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-01 12:15:07,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-01 12:15:07,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-01 12:15:07,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-01 12:15:07,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-01 12:15:07,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-01 12:15:07,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-01 12:15:07,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-01 12:15:07,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-01 12:15:07,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-01 12:15:07,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-01 12:15:07,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-01 12:15:07,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-01 12:15:07,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-01 12:15:07,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-01 12:15:07,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-01 12:15:07,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-01 12:15:07,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-01 12:15:07,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-01 12:15:07,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-01 12:15:07,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-01 12:15:07,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-01 12:15:07,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-01 12:15:07,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-01 12:15:07,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-01 12:15:07,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-01 12:15:07,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-01 12:15:07,064 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-07-01 12:15:07,079 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-01 12:15:07,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-01 12:15:07,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-01 12:15:07,080 INFO L138 SettingsManager]: * Rewrite not-equals=true [2020-07-01 12:15:07,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-01 12:15:07,080 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:15:07,081 INFO L138 SettingsManager]: * Use SBE=true [2020-07-01 12:15:07,081 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-01 12:15:07,081 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-01 12:15:07,081 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-01 12:15:07,081 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-07-01 12:15:07,082 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-01 12:15:07,082 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-01 12:15:07,082 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2020-07-01 12:15:07,082 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:15:07,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-01 12:15:07,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-01 12:15:07,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-01 12:15:07,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-01 12:15:07,083 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-01 12:15:07,083 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-07-01 12:15:07,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-01 12:15:07,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-01 12:15:07,084 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-01 12:15:07,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:15:07,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-01 12:15:07,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-01 12:15:07,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-01 12:15:07,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-01 12:15:07,247 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-01 12:15:07,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-01 12:15:07,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-01 12:15:07,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-01 12:15:07,266 INFO L275 PluginConnector]: CDTParser initialized [2020-07-01 12:15:07,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:15:07,325 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_iTEw_r/tmp/001d852deb6043c58994dbe9a713bac1/FLAGbd784b0b6 [2020-07-01 12:15:07,659 INFO L306 CDTParser]: Found 1 translation units. [2020-07-01 12:15:07,660 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-07-01 12:15:07,666 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/BenchExec_run_iTEw_r/tmp/001d852deb6043c58994dbe9a713bac1/FLAGbd784b0b6 [2020-07-01 12:15:08,076 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/BenchExec_run_iTEw_r/tmp/001d852deb6043c58994dbe9a713bac1 [2020-07-01 12:15:08,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-01 12:15:08,089 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-07-01 12:15:08,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-01 12:15:08,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-01 12:15:08,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-01 12:15:08,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612a65a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08, skipping insertion in model container [2020-07-01 12:15:08,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-01 12:15:08,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-01 12:15:08,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:15:08,342 INFO L203 MainTranslator]: Completed pre-run [2020-07-01 12:15:08,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-01 12:15:08,371 INFO L208 MainTranslator]: Completed translation [2020-07-01 12:15:08,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08 WrapperNode [2020-07-01 12:15:08,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-01 12:15:08,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-01 12:15:08,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-01 12:15:08,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-01 12:15:08,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-01 12:15:08,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-01 12:15:08,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-01 12:15:08,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-01 12:15:08,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-01 12:15:08,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-01 12:15:08,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-01 12:15:08,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-01 12:15:08,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-07-01 12:15:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-01 12:15:08,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-01 12:15:08,638 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-01 12:15:08,639 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-01 12:15:08,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:15:08 BoogieIcfgContainer [2020-07-01 12:15:08,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-01 12:15:08,644 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-07-01 12:15:08,644 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-07-01 12:15:08,646 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2020-07-01 12:15:08,647 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:15:08" (1/1) ... [2020-07-01 12:15:08,660 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 11 edges [2020-07-01 12:15:08,662 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-07-01 12:15:08,663 INFO L263 BlockEncoder]: Using Maximize final states [2020-07-01 12:15:08,663 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-07-01 12:15:08,664 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-07-01 12:15:08,666 INFO L296 BlockEncoder]: Using Remove sink states [2020-07-01 12:15:08,666 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-07-01 12:15:08,667 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-07-01 12:15:08,681 INFO L185 BlockEncoder]: Using Use SBE [2020-07-01 12:15:08,695 INFO L200 BlockEncoder]: SBE split 1 edges [2020-07-01 12:15:08,700 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2020-07-01 12:15:08,701 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:15:08,712 INFO L100 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2020-07-01 12:15:08,714 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2020-07-01 12:15:08,716 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-07-01 12:15:08,716 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-07-01 12:15:08,716 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-07-01 12:15:08,717 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-07-01 12:15:08,717 INFO L313 BlockEncoder]: Encoded RCFG 4 locations, 6 edges [2020-07-01 12:15:08,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:15:08 BasicIcfg [2020-07-01 12:15:08,718 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-07-01 12:15:08,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-01 12:15:08,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-01 12:15:08,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-01 12:15:08,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.07 12:15:08" (1/4) ... [2020-07-01 12:15:08,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3e7ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:15:08, skipping insertion in model container [2020-07-01 12:15:08,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (2/4) ... [2020-07-01 12:15:08,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3e7ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:15:08, skipping insertion in model container [2020-07-01 12:15:08,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:15:08" (3/4) ... [2020-07-01 12:15:08,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3e7ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:15:08, skipping insertion in model container [2020-07-01 12:15:08,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:15:08" (4/4) ... [2020-07-01 12:15:08,727 INFO L109 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:15:08,738 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-07-01 12:15:08,746 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 0 error locations. [2020-07-01 12:15:08,761 INFO L251 AbstractCegarLoop]: Starting to check reachability of 0 error locations. [2020-07-01 12:15:08,786 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-01 12:15:08,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-01 12:15:08,786 INFO L377 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:15:08,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:15:08,787 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:15:08,787 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-01 12:15:08,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:15:08,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-01 12:15:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states. [2020-07-01 12:15:08,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-01 12:15:08,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-07-01 12:15:08,865 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-01 12:15:08,866 INFO L271 CegarLoopResult]: At program point L13-1(lines 9 16) the Hoare annotation is: true [2020-07-01 12:15:08,866 INFO L268 CegarLoopResult]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-07-01 12:15:08,866 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 16) no Hoare annotation was computed. [2020-07-01 12:15:08,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:15:08 BasicIcfg [2020-07-01 12:15:08,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-01 12:15:08,876 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-01 12:15:08,876 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-01 12:15:08,880 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-01 12:15:08,881 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:08,881 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.07 12:15:08" (1/5) ... [2020-07-01 12:15:08,882 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31c6b170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:15:08, skipping insertion in model container [2020-07-01 12:15:08,883 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:08,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.07 12:15:08" (2/5) ... [2020-07-01 12:15:08,883 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31c6b170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.07 12:15:08, skipping insertion in model container [2020-07-01 12:15:08,883 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:08,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:15:08" (3/5) ... [2020-07-01 12:15:08,884 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31c6b170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:15:08, skipping insertion in model container [2020-07-01 12:15:08,884 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:08,884 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 01.07 12:15:08" (4/5) ... [2020-07-01 12:15:08,885 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31c6b170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:15:08, skipping insertion in model container [2020-07-01 12:15:08,885 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-01 12:15:08,885 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:15:08" (5/5) ... [2020-07-01 12:15:08,886 INFO L371 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-07-01 12:15:08,917 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-01 12:15:08,917 INFO L357 BuchiCegarLoop]: Hoare is true [2020-07-01 12:15:08,917 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-01 12:15:08,918 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-01 12:15:08,918 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-01 12:15:08,918 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-01 12:15:08,918 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-01 12:15:08,918 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-01 12:15:08,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 12:15:08,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 12:15:08,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:15:08,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:15:08,945 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:15:08,945 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:15:08,945 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-01 12:15:08,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states. [2020-07-01 12:15:08,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-07-01 12:15:08,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:15:08,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:15:08,946 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-07-01 12:15:08,946 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:15:08,951 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue [32] ULTIMATE.startENTRY-->L13-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 5#L13-1true [2020-07-01 12:15:08,952 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true [35] L13-1-->L10: Formula: (and (<= v_ULTIMATE.start_main_~i~0_10 5) (<= 0 (+ v_ULTIMATE.start_main_~i~0_10 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 3#L10true [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_13) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[] 6#L10-2true [38] L10-2-->L13-1: Formula: (and (= v_ULTIMATE.start_main_~i~0_6 (+ v_ULTIMATE.start_main_~i~0_7 1)) (< v_ULTIMATE.start_main_~i~0_7 0)) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_7} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_6} AuxVars[] AssignedVars[ULTIMATE.start_main_~i~0] 5#L13-1true [2020-07-01 12:15:08,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:08,958 INFO L82 PathProgramCache]: Analyzing trace with hash 63, now seen corresponding path program 1 times [2020-07-01 12:15:08,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:15:08,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783765704] [2020-07-01 12:15:08,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:15:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,040 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:15:09,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:09,041 INFO L82 PathProgramCache]: Analyzing trace with hash 64766, now seen corresponding path program 1 times [2020-07-01 12:15:09,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:15:09,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784407354] [2020-07-01 12:15:09,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:15:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,057 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:15:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1911808, now seen corresponding path program 1 times [2020-07-01 12:15:09,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:15:09,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110154993] [2020-07-01 12:15:09,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:15:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,071 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:15:09,135 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:15:09,135 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:15:09,135 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:15:09,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:15:09,136 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-07-01 12:15:09,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-07-01 12:15:09,136 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:15:09,136 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:15:09,136 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:15:09,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:15:09,137 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:15:09,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:15:09,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:15:09,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:15:09,251 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:15:09,251 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /export/starexec/sandbox/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 12:15:09,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-07-01 12:15:09,259 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /export/starexec/sandbox/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 12:15:09,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-07-01 12:15:09,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-07-01 12:15:09,307 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-07-01 12:15:09,336 INFO L210 LassoAnalysis]: Preferences: [2020-07-01 12:15:09,337 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-07-01 12:15:09,337 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-07-01 12:15:09,337 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-07-01 12:15:09,337 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-07-01 12:15:09,337 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-01 12:15:09,337 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-07-01 12:15:09,338 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-07-01 12:15:09,338 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2020-07-01 12:15:09,338 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-07-01 12:15:09,338 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-07-01 12:15:09,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:15:09,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:15:09,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-07-01 12:15:09,416 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-07-01 12:15:09,422 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /export/starexec/sandbox/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 12:15:09,428 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 12:15:09,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-07-01 12:15:09,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-07-01 12:15:09,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-07-01 12:15:09,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-07-01 12:15:09,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-07-01 12:15:09,436 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-07-01 12:15:09,436 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-07-01 12:15:09,441 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-07-01 12:15:09,448 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-07-01 12:15:09,448 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 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 12:15:09,455 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-07-01 12:15:09,455 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-07-01 12:15:09,456 INFO L510 LassoAnalysis]: Proved termination. [2020-07-01 12:15:09,457 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-07-01 12:15:09,490 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-07-01 12:15:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:15:09,529 WARN L262 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-01 12:15:09,530 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:15:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:15:09,544 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:15:09,544 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:15:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-01 12:15:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-01 12:15:09,564 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-01 12:15:09,564 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-01 12:15:09,608 INFO L98 LoopCannibalizer]: 1 predicates before loop cannibalization 3 predicates after loop cannibalization [2020-07-01 12:15:09,614 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 12:15:09,615 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 4 states. Second operand 3 states. [2020-07-01 12:15:09,654 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 4 states.. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 4 states. [2020-07-01 12:15:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-07-01 12:15:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-01 12:15:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-07-01 12:15:09,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2020-07-01 12:15:09,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:15:09,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2020-07-01 12:15:09,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:15:09,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 1 letters. Loop has 6 letters. [2020-07-01 12:15:09,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-07-01 12:15:09,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2020-07-01 12:15:09,669 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 12:15:09,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 20 transitions. [2020-07-01 12:15:09,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-07-01 12:15:09,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-07-01 12:15:09,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 20 transitions. [2020-07-01 12:15:09,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-07-01 12:15:09,677 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2020-07-01 12:15:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 20 transitions. [2020-07-01 12:15:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-07-01 12:15:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-01 12:15:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-07-01 12:15:09,707 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-07-01 12:15:09,707 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-07-01 12:15:09,707 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-01 12:15:09,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2020-07-01 12:15:09,708 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-07-01 12:15:09,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-01 12:15:09,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-01 12:15:09,708 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-01 12:15:09,708 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-01 12:15:09,709 INFO L794 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRY [32] ULTIMATE.startENTRY-->L13-1: Formula: (= v_ULTIMATE.start_main_~i~0_1 |v_ULTIMATE.start_main_#t~nondet0_4|) InVars {} OutVars{ULTIMATE.start_main_#t~nondet0=|v_ULTIMATE.start_main_#t~nondet0_1|, ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_1, ULTIMATE.start_main_#res=|v_ULTIMATE.start_main_#res_1|} AuxVars[|v_ULTIMATE.start_main_#t~nondet0_4|] AssignedVars[ULTIMATE.start_main_#t~nondet0, ULTIMATE.start_main_#res, ULTIMATE.start_main_~i~0] 65#L13-1 [35] L13-1-->L10: Formula: (and (<= v_ULTIMATE.start_main_~i~0_10 5) (<= 0 (+ v_ULTIMATE.start_main_~i~0_10 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 67#L10 [2020-07-01 12:15:09,709 INFO L796 eck$LassoCheckResult]: Loop: 67#L10 [42] L10-->L10-2: Formula: (>= 0 v_ULTIMATE.start_main_~i~0_13) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_13} AuxVars[] AssignedVars[] 69#L10-2 [43] L10-2-->L13-1: Formula: (>= v_ULTIMATE.start_main_~i~0_8 0) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_8} AuxVars[] AssignedVars[] 66#L13-1 [35] L13-1-->L10: Formula: (and (<= v_ULTIMATE.start_main_~i~0_10 5) (<= 0 (+ v_ULTIMATE.start_main_~i~0_10 5))) InVars {ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} OutVars{ULTIMATE.start_main_~i~0=v_ULTIMATE.start_main_~i~0_10} AuxVars[] AssignedVars[] 67#L10 [2020-07-01 12:15:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:09,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1988, now seen corresponding path program 1 times [2020-07-01 12:15:09,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:15:09,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994046404] [2020-07-01 12:15:09,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:15:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,717 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:15:09,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:09,718 INFO L82 PathProgramCache]: Analyzing trace with hash 71521, now seen corresponding path program 1 times [2020-07-01 12:15:09,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:15:09,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87266649] [2020-07-01 12:15:09,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:15:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,727 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:15:09,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-01 12:15:09,728 INFO L82 PathProgramCache]: Analyzing trace with hash 59266238, now seen corresponding path program 1 times [2020-07-01 12:15:09,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-01 12:15:09,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966502531] [2020-07-01 12:15:09,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-01 12:15:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-01 12:15:09,736 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-01 12:15:09,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.07 12:15:09 BasicIcfg [2020-07-01 12:15:09,781 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-01 12:15:09,784 INFO L168 Benchmark]: Toolchain (without parser) took 1693.62 ms. Allocated memory was 649.6 MB in the beginning and 684.7 MB in the end (delta: 35.1 MB). Free memory was 560.5 MB in the beginning and 527.5 MB in the end (delta: 33.0 MB). Peak memory consumption was 68.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:15:09,784 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-07-01 12:15:09,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.73 ms. Allocated memory was 649.6 MB in the beginning and 684.7 MB in the end (delta: 35.1 MB). Free memory was 560.5 MB in the beginning and 648.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. [2020-07-01 12:15:09,786 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.41 ms. Allocated memory is still 684.7 MB. Free memory was 648.1 MB in the beginning and 646.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:15:09,786 INFO L168 Benchmark]: Boogie Preprocessor took 19.48 ms. Allocated memory is still 684.7 MB. Free memory was 646.7 MB in the beginning and 645.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:15:09,787 INFO L168 Benchmark]: RCFGBuilder took 217.16 ms. Allocated memory is still 684.7 MB. Free memory was 645.4 MB in the beginning and 631.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. [2020-07-01 12:15:09,787 INFO L168 Benchmark]: BlockEncodingV2 took 73.79 ms. Allocated memory is still 684.7 MB. Free memory was 631.1 MB in the beginning and 625.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. [2020-07-01 12:15:09,788 INFO L168 Benchmark]: TraceAbstraction took 156.37 ms. Allocated memory is still 684.7 MB. Free memory was 625.7 MB in the beginning and 617.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. [2020-07-01 12:15:09,789 INFO L168 Benchmark]: BuchiAutomizer took 905.50 ms. Allocated memory is still 684.7 MB. Free memory was 616.3 MB in the beginning and 527.5 MB in the end (delta: 88.8 MB). Peak memory consumption was 88.8 MB. Max. memory is 50.3 GB. [2020-07-01 12:15:09,793 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 11 edges - StatisticsResult: Encoded RCFG 4 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 583.2 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 281.73 ms. Allocated memory was 649.6 MB in the beginning and 684.7 MB in the end (delta: 35.1 MB). Free memory was 560.5 MB in the beginning and 648.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 28.5 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 33.41 ms. Allocated memory is still 684.7 MB. Free memory was 648.1 MB in the beginning and 646.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 19.48 ms. Allocated memory is still 684.7 MB. Free memory was 646.7 MB in the beginning and 645.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. * RCFGBuilder took 217.16 ms. Allocated memory is still 684.7 MB. Free memory was 645.4 MB in the beginning and 631.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 73.79 ms. Allocated memory is still 684.7 MB. Free memory was 631.1 MB in the beginning and 625.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 50.3 GB. * TraceAbstraction took 156.37 ms. Allocated memory is still 684.7 MB. Free memory was 625.7 MB in the beginning and 617.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 50.3 GB. * BuchiAutomizer took 905.50 ms. Allocated memory is still 684.7 MB. Free memory was 616.3 MB in the beginning and 527.5 MB in the end (delta: 88.8 MB). Peak memory consumption was 88.8 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: 9]: 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 1 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 0 deterministic, 1 nondeterministic) and one nonterminating remainder module.One nondeterministic module has affine ranking function -1 * i and consists of 3 locations. The remainder module has 12 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 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 9 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq139 hnf95 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 33ms 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: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: 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@34051254=0, \result=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i >= -5 && i <= 5 Loop: [L10] COND FALSE !(i > 0) [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! !SESSION 2020-07-01 12:15:04.845 ----------------------------------------------- eclipse.buildId=unknown java.version=1.8.0_242 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp/BenchExec_run_iTEw_r/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c !ENTRY org.eclipse.core.resources 2 10035 2020-07-01 12:15:10.228 !MESSAGE The workspace will exit with unsaved changes in this session. Received shutdown request... Ultimate: GTK+ Version Check