12.24/5.91 MAYBE 12.24/5.91 12.24/5.91 Ultimate: Cannot open display: 12.24/5.91 This is Ultimate 0.1.24-8dc7c08-m 12.24/5.91 [2019-03-28 12:31:46,062 INFO L170 SettingsManager]: Resetting all preferences to default values... 12.24/5.91 [2019-03-28 12:31:46,064 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values 12.24/5.91 [2019-03-28 12:31:46,075 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 12.24/5.91 [2019-03-28 12:31:46,076 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values 12.24/5.91 [2019-03-28 12:31:46,077 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values 12.24/5.91 [2019-03-28 12:31:46,078 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values 12.24/5.91 [2019-03-28 12:31:46,080 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values 12.24/5.91 [2019-03-28 12:31:46,081 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values 12.24/5.91 [2019-03-28 12:31:46,082 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values 12.24/5.91 [2019-03-28 12:31:46,083 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 12.24/5.91 [2019-03-28 12:31:46,083 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values 12.24/5.91 [2019-03-28 12:31:46,084 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values 12.24/5.91 [2019-03-28 12:31:46,085 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values 12.24/5.91 [2019-03-28 12:31:46,086 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values 12.24/5.91 [2019-03-28 12:31:46,087 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values 12.24/5.91 [2019-03-28 12:31:46,087 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values 12.24/5.91 [2019-03-28 12:31:46,089 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values 12.24/5.91 [2019-03-28 12:31:46,091 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values 12.24/5.91 [2019-03-28 12:31:46,092 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values 12.24/5.91 [2019-03-28 12:31:46,093 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values 12.24/5.91 [2019-03-28 12:31:46,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values 12.24/5.91 [2019-03-28 12:31:46,097 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 12.24/5.91 [2019-03-28 12:31:46,097 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... 12.24/5.91 [2019-03-28 12:31:46,097 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values 12.24/5.91 [2019-03-28 12:31:46,098 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values 12.24/5.91 [2019-03-28 12:31:46,098 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values 12.24/5.91 [2019-03-28 12:31:46,099 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... 12.24/5.91 [2019-03-28 12:31:46,099 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values 12.24/5.91 [2019-03-28 12:31:46,100 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values 12.24/5.91 [2019-03-28 12:31:46,101 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values 12.24/5.91 [2019-03-28 12:31:46,102 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values 12.24/5.91 [2019-03-28 12:31:46,103 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 12.24/5.91 [2019-03-28 12:31:46,103 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values 12.24/5.91 [2019-03-28 12:31:46,103 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 12.24/5.91 [2019-03-28 12:31:46,104 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... 12.24/5.91 [2019-03-28 12:31:46,104 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values 12.24/5.91 [2019-03-28 12:31:46,105 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values 12.24/5.91 [2019-03-28 12:31:46,105 INFO L181 SettingsManager]: Finished resetting all preferences to default values... 12.24/5.91 [2019-03-28 12:31:46,106 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf 12.24/5.91 [2019-03-28 12:31:46,120 INFO L110 SettingsManager]: Loading preferences was successful 12.24/5.91 [2019-03-28 12:31:46,121 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: 12.24/5.91 [2019-03-28 12:31:46,122 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: 12.24/5.91 [2019-03-28 12:31:46,122 INFO L133 SettingsManager]: * Rewrite not-equals=true 12.24/5.91 [2019-03-28 12:31:46,122 INFO L133 SettingsManager]: * Create parallel compositions if possible=false 12.24/5.91 [2019-03-28 12:31:46,122 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE 12.24/5.91 [2019-03-28 12:31:46,122 INFO L133 SettingsManager]: * Use SBE=true 12.24/5.91 [2019-03-28 12:31:46,123 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: 12.24/5.91 [2019-03-28 12:31:46,123 INFO L133 SettingsManager]: * Use old map elimination=false 12.24/5.91 [2019-03-28 12:31:46,123 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false 12.24/5.91 [2019-03-28 12:31:46,123 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION 12.24/5.91 [2019-03-28 12:31:46,123 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true 12.24/5.91 [2019-03-28 12:31:46,124 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES 12.24/5.91 [2019-03-28 12:31:46,124 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true 12.24/5.91 [2019-03-28 12:31:46,124 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 12.24/5.91 [2019-03-28 12:31:46,124 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: 12.24/5.91 [2019-03-28 12:31:46,124 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false 12.24/5.91 [2019-03-28 12:31:46,124 INFO L133 SettingsManager]: * Check division by zero=IGNORE 12.24/5.91 [2019-03-28 12:31:46,125 INFO L133 SettingsManager]: * Check if freed pointer was valid=false 12.24/5.91 [2019-03-28 12:31:46,125 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false 12.24/5.91 [2019-03-28 12:31:46,125 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE 12.24/5.91 [2019-03-28 12:31:46,125 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: 12.24/5.91 [2019-03-28 12:31:46,125 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements 12.24/5.91 [2019-03-28 12:31:46,125 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump 12.24/5.91 [2019-03-28 12:31:46,126 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 12.24/5.91 [2019-03-28 12:31:46,126 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: 12.24/5.91 [2019-03-28 12:31:46,126 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles 12.24/5.91 [2019-03-28 12:31:46,126 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL 12.24/5.91 [2019-03-28 12:31:46,126 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 12.24/5.91 [2019-03-28 12:31:46,152 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp 12.24/5.91 [2019-03-28 12:31:46,165 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized 12.24/5.91 [2019-03-28 12:31:46,169 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. 12.24/5.91 [2019-03-28 12:31:46,170 INFO L271 PluginConnector]: Initializing CDTParser... 12.24/5.91 [2019-03-28 12:31:46,170 INFO L276 PluginConnector]: CDTParser initialized 12.24/5.91 [2019-03-28 12:31:46,171 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c 12.24/5.91 [2019-03-28 12:31:46,263 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/8edf6159685347ea8606170d7808b9d6/FLAGb7a7658f6 12.24/5.91 [2019-03-28 12:31:46,606 INFO L307 CDTParser]: Found 1 translation units. 12.24/5.91 [2019-03-28 12:31:46,607 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c 12.24/5.91 [2019-03-28 12:31:46,613 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/8edf6159685347ea8606170d7808b9d6/FLAGb7a7658f6 12.24/5.91 [2019-03-28 12:31:47,076 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/8edf6159685347ea8606170d7808b9d6 12.24/5.91 [2019-03-28 12:31:47,088 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### 12.24/5.91 [2019-03-28 12:31:47,090 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. 12.24/5.91 [2019-03-28 12:31:47,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- 12.24/5.91 [2019-03-28 12:31:47,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... 12.24/5.91 [2019-03-28 12:31:47,095 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized 12.24/5.91 [2019-03-28 12:31:47,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464840c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47, skipping insertion in model container 12.24/5.91 [2019-03-28 12:31:47,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode 12.24/5.91 [2019-03-28 12:31:47,124 INFO L176 MainTranslator]: Built tables and reachable declarations 12.24/5.91 [2019-03-28 12:31:47,287 INFO L206 PostProcessor]: Analyzing one entry point: main 12.24/5.91 [2019-03-28 12:31:47,291 INFO L191 MainTranslator]: Completed pre-run 12.24/5.91 [2019-03-28 12:31:47,312 INFO L206 PostProcessor]: Analyzing one entry point: main 12.24/5.91 [2019-03-28 12:31:47,397 INFO L195 MainTranslator]: Completed translation 12.24/5.91 [2019-03-28 12:31:47,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47 WrapperNode 12.24/5.91 [2019-03-28 12:31:47,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- 12.24/5.91 [2019-03-28 12:31:47,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- 12.24/5.91 [2019-03-28 12:31:47,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... 12.24/5.91 [2019-03-28 12:31:47,399 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized 12.24/5.91 [2019-03-28 12:31:47,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- 12.24/5.91 [2019-03-28 12:31:47,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- 12.24/5.91 [2019-03-28 12:31:47,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... 12.24/5.91 [2019-03-28 12:31:47,439 INFO L276 PluginConnector]: Boogie Preprocessor initialized 12.24/5.91 [2019-03-28 12:31:47,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- 12.24/5.91 [2019-03-28 12:31:47,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- 12.24/5.91 [2019-03-28 12:31:47,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... 12.24/5.91 [2019-03-28 12:31:47,463 INFO L276 PluginConnector]: RCFGBuilder initialized 12.24/5.91 [2019-03-28 12:31:47,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (1/1) ... 12.24/5.91 No working directory specified, using /export/starexec/sandbox/solver/bin/z3 12.24/5.91 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) 12.24/5.91 Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 12.24/5.91 [2019-03-28 12:31:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int 12.24/5.91 [2019-03-28 12:31:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start 12.24/5.91 [2019-03-28 12:31:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start 12.24/5.91 [2019-03-28 12:31:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int 12.24/5.91 [2019-03-28 12:31:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack 12.24/5.91 [2019-03-28 12:31:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc 12.24/5.91 [2019-03-28 12:31:47,708 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) 12.24/5.91 [2019-03-28 12:31:47,708 INFO L286 CfgBuilder]: Removed 5 assue(true) statements. 12.24/5.91 [2019-03-28 12:31:47,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:31:47 BoogieIcfgContainer 12.24/5.91 [2019-03-28 12:31:47,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- 12.24/5.91 [2019-03-28 12:31:47,710 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- 12.24/5.91 [2019-03-28 12:31:47,710 INFO L271 PluginConnector]: Initializing BlockEncodingV2... 12.24/5.91 [2019-03-28 12:31:47,713 INFO L276 PluginConnector]: BlockEncodingV2 initialized 12.24/5.91 [2019-03-28 12:31:47,713 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:31:47" (1/1) ... 12.24/5.91 [2019-03-28 12:31:47,729 INFO L313 BlockEncoder]: Initial Icfg 16 locations, 18 edges 12.24/5.91 [2019-03-28 12:31:47,731 INFO L258 BlockEncoder]: Using Remove infeasible edges 12.24/5.91 [2019-03-28 12:31:47,732 INFO L263 BlockEncoder]: Using Maximize final states 12.24/5.91 [2019-03-28 12:31:47,733 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false 12.24/5.91 [2019-03-28 12:31:47,733 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE 12.24/5.91 [2019-03-28 12:31:47,735 INFO L296 BlockEncoder]: Using Remove sink states 12.24/5.91 [2019-03-28 12:31:47,736 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true 12.24/5.91 [2019-03-28 12:31:47,736 INFO L179 BlockEncoder]: Using Rewrite not-equals 12.24/5.91 [2019-03-28 12:31:47,755 INFO L185 BlockEncoder]: Using Use SBE 12.24/5.91 [2019-03-28 12:31:47,776 INFO L200 BlockEncoder]: SBE split 7 edges 12.24/5.91 [2019-03-28 12:31:47,781 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility 12.24/5.91 [2019-03-28 12:31:47,783 INFO L71 MaximizeFinalStates]: 0 new accepting states 12.24/5.91 [2019-03-28 12:31:47,808 INFO L100 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding 12.24/5.91 [2019-03-28 12:31:47,811 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states 12.24/5.91 [2019-03-28 12:31:47,812 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility 12.24/5.91 [2019-03-28 12:31:47,813 INFO L71 MaximizeFinalStates]: 0 new accepting states 12.24/5.91 [2019-03-28 12:31:47,813 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding 12.24/5.91 [2019-03-28 12:31:47,814 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states 12.24/5.91 [2019-03-28 12:31:47,814 INFO L313 BlockEncoder]: Encoded RCFG 12 locations, 21 edges 12.24/5.91 [2019-03-28 12:31:47,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:31:47 BasicIcfg 12.24/5.91 [2019-03-28 12:31:47,815 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- 12.24/5.91 [2019-03-28 12:31:47,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- 12.24/5.91 [2019-03-28 12:31:47,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... 12.24/5.91 [2019-03-28 12:31:47,819 INFO L276 PluginConnector]: TraceAbstraction initialized 12.24/5.91 [2019-03-28 12:31:47,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.03 12:31:47" (1/4) ... 12.24/5.91 [2019-03-28 12:31:47,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172a25af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:31:47, skipping insertion in model container 12.24/5.91 [2019-03-28 12:31:47,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:31:47" (2/4) ... 12.24/5.91 [2019-03-28 12:31:47,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172a25af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:31:47, skipping insertion in model container 12.24/5.91 [2019-03-28 12:31:47,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:31:47" (3/4) ... 12.24/5.91 [2019-03-28 12:31:47,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172a25af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:31:47, skipping insertion in model container 12.24/5.91 [2019-03-28 12:31:47,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:31:47" (4/4) ... 12.24/5.91 [2019-03-28 12:31:47,823 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 12.24/5.91 [2019-03-28 12:31:47,835 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION 12.24/5.91 [2019-03-28 12:31:47,844 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. 12.24/5.91 [2019-03-28 12:31:47,865 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. 12.24/5.91 [2019-03-28 12:31:47,898 INFO L133 ementStrategyFactory]: Using default assertion order modulation 12.24/5.91 [2019-03-28 12:31:47,899 INFO L382 AbstractCegarLoop]: Interprodecural is true 12.24/5.91 [2019-03-28 12:31:47,899 INFO L383 AbstractCegarLoop]: Hoare is true 12.24/5.91 [2019-03-28 12:31:47,900 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates 12.24/5.91 [2019-03-28 12:31:47,900 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE 12.24/5.91 [2019-03-28 12:31:47,900 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION 12.24/5.91 [2019-03-28 12:31:47,900 INFO L387 AbstractCegarLoop]: Difference is false 12.24/5.91 [2019-03-28 12:31:47,900 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA 12.24/5.91 [2019-03-28 12:31:47,900 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== 12.24/5.91 [2019-03-28 12:31:47,916 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. 12.24/5.91 [2019-03-28 12:31:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 12.24/5.91 [2019-03-28 12:31:47,922 INFO L394 BasicCegarLoop]: Found error trace 12.24/5.91 [2019-03-28 12:31:47,922 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] 12.24/5.91 [2019-03-28 12:31:47,923 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== 12.24/5.91 [2019-03-28 12:31:47,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 12.24/5.91 [2019-03-28 12:31:47,928 INFO L82 PathProgramCache]: Analyzing trace with hash 69203968, now seen corresponding path program 1 times 12.24/5.91 [2019-03-28 12:31:47,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 12.24/5.91 [2019-03-28 12:31:47,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 12.24/5.91 [2019-03-28 12:31:47,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.91 [2019-03-28 12:31:47,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 12.24/5.91 [2019-03-28 12:31:47,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.91 [2019-03-28 12:31:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 12.24/5.91 [2019-03-28 12:31:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 12.24/5.91 [2019-03-28 12:31:48,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 12.24/5.91 [2019-03-28 12:31:48,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 12.24/5.91 [2019-03-28 12:31:48,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 12.24/5.91 [2019-03-28 12:31:48,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 12.24/5.91 [2019-03-28 12:31:48,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 12.24/5.91 [2019-03-28 12:31:48,118 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. 12.24/5.91 [2019-03-28 12:31:48,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 12.24/5.91 [2019-03-28 12:31:48,179 INFO L93 Difference]: Finished difference Result 12 states and 21 transitions. 12.24/5.91 [2019-03-28 12:31:48,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 12.24/5.91 [2019-03-28 12:31:48,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 12.24/5.91 [2019-03-28 12:31:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 12.24/5.91 [2019-03-28 12:31:48,193 INFO L225 Difference]: With dead ends: 12 12.24/5.91 [2019-03-28 12:31:48,193 INFO L226 Difference]: Without dead ends: 10 12.24/5.91 [2019-03-28 12:31:48,197 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 12.24/5.91 [2019-03-28 12:31:48,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. 12.24/5.91 [2019-03-28 12:31:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. 12.24/5.91 [2019-03-28 12:31:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. 12.24/5.91 [2019-03-28 12:31:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 17 transitions. 12.24/5.91 [2019-03-28 12:31:48,232 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 17 transitions. Word has length 5 12.24/5.91 [2019-03-28 12:31:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. 12.24/5.91 [2019-03-28 12:31:48,233 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 17 transitions. 12.24/5.91 [2019-03-28 12:31:48,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 12.24/5.91 [2019-03-28 12:31:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 17 transitions. 12.24/5.91 [2019-03-28 12:31:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 12.24/5.91 [2019-03-28 12:31:48,234 INFO L394 BasicCegarLoop]: Found error trace 12.24/5.91 [2019-03-28 12:31:48,234 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] 12.24/5.91 [2019-03-28 12:31:48,234 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== 12.24/5.91 [2019-03-28 12:31:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 12.24/5.91 [2019-03-28 12:31:48,234 INFO L82 PathProgramCache]: Analyzing trace with hash 69203969, now seen corresponding path program 1 times 12.24/5.91 [2019-03-28 12:31:48,235 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 12.24/5.91 [2019-03-28 12:31:48,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 12.24/5.91 [2019-03-28 12:31:48,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.91 [2019-03-28 12:31:48,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 12.24/5.91 [2019-03-28 12:31:48,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.91 [2019-03-28 12:31:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 12.24/5.91 [2019-03-28 12:31:48,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 12.24/5.91 [2019-03-28 12:31:48,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 12.24/5.91 [2019-03-28 12:31:48,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 12.24/5.91 [2019-03-28 12:31:48,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states 12.24/5.91 [2019-03-28 12:31:48,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. 12.24/5.91 [2019-03-28 12:31:48,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 12.24/5.91 [2019-03-28 12:31:48,291 INFO L87 Difference]: Start difference. First operand 10 states and 17 transitions. Second operand 4 states. 12.24/5.91 [2019-03-28 12:31:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 12.24/5.91 [2019-03-28 12:31:48,354 INFO L93 Difference]: Finished difference Result 24 states and 40 transitions. 12.24/5.91 [2019-03-28 12:31:48,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 12.24/5.91 [2019-03-28 12:31:48,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 12.24/5.91 [2019-03-28 12:31:48,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 12.24/5.91 [2019-03-28 12:31:48,357 INFO L225 Difference]: With dead ends: 24 12.24/5.91 [2019-03-28 12:31:48,357 INFO L226 Difference]: Without dead ends: 16 12.24/5.91 [2019-03-28 12:31:48,358 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 12.24/5.91 [2019-03-28 12:31:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. 12.24/5.91 [2019-03-28 12:31:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. 12.24/5.91 [2019-03-28 12:31:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. 12.24/5.91 [2019-03-28 12:31:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 23 transitions. 12.24/5.91 [2019-03-28 12:31:48,364 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 23 transitions. Word has length 5 12.24/5.92 [2019-03-28 12:31:48,364 INFO L84 Accepts]: Finished accepts. word is rejected. 12.24/5.92 [2019-03-28 12:31:48,364 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 23 transitions. 12.24/5.92 [2019-03-28 12:31:48,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. 12.24/5.92 [2019-03-28 12:31:48,364 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 23 transitions. 12.24/5.92 [2019-03-28 12:31:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 12.24/5.92 [2019-03-28 12:31:48,365 INFO L394 BasicCegarLoop]: Found error trace 12.24/5.92 [2019-03-28 12:31:48,365 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] 12.24/5.92 [2019-03-28 12:31:48,365 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== 12.24/5.92 [2019-03-28 12:31:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 12.24/5.92 [2019-03-28 12:31:48,366 INFO L82 PathProgramCache]: Analyzing trace with hash 69203970, now seen corresponding path program 1 times 12.24/5.92 [2019-03-28 12:31:48,366 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 12.24/5.92 [2019-03-28 12:31:48,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 12.24/5.92 [2019-03-28 12:31:48,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.92 [2019-03-28 12:31:48,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 12.24/5.92 [2019-03-28 12:31:48,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.92 [2019-03-28 12:31:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 12.24/5.92 [2019-03-28 12:31:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 12.24/5.92 [2019-03-28 12:31:48,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 12.24/5.92 [2019-03-28 12:31:48,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 12.24/5.92 [2019-03-28 12:31:48,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states 12.24/5.92 [2019-03-28 12:31:48,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. 12.24/5.92 [2019-03-28 12:31:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 12.24/5.92 [2019-03-28 12:31:48,396 INFO L87 Difference]: Start difference. First operand 13 states and 23 transitions. Second operand 4 states. 12.24/5.92 [2019-03-28 12:31:48,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 12.24/5.92 [2019-03-28 12:31:48,452 INFO L93 Difference]: Finished difference Result 25 states and 40 transitions. 12.24/5.92 [2019-03-28 12:31:48,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 12.24/5.92 [2019-03-28 12:31:48,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 12.24/5.92 [2019-03-28 12:31:48,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 12.24/5.92 [2019-03-28 12:31:48,454 INFO L225 Difference]: With dead ends: 25 12.24/5.92 [2019-03-28 12:31:48,454 INFO L226 Difference]: Without dead ends: 17 12.24/5.92 [2019-03-28 12:31:48,455 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 12.24/5.92 [2019-03-28 12:31:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. 12.24/5.92 [2019-03-28 12:31:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. 12.24/5.92 [2019-03-28 12:31:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. 12.24/5.92 [2019-03-28 12:31:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. 12.24/5.92 [2019-03-28 12:31:48,459 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 5 12.24/5.92 [2019-03-28 12:31:48,459 INFO L84 Accepts]: Finished accepts. word is rejected. 12.24/5.92 [2019-03-28 12:31:48,459 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. 12.24/5.92 [2019-03-28 12:31:48,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. 12.24/5.92 [2019-03-28 12:31:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. 12.24/5.92 [2019-03-28 12:31:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 12.24/5.92 [2019-03-28 12:31:48,460 INFO L394 BasicCegarLoop]: Found error trace 12.24/5.92 [2019-03-28 12:31:48,460 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] 12.24/5.92 [2019-03-28 12:31:48,460 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== 12.24/5.92 [2019-03-28 12:31:48,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 12.24/5.92 [2019-03-28 12:31:48,461 INFO L82 PathProgramCache]: Analyzing trace with hash 69204931, now seen corresponding path program 1 times 12.24/5.92 [2019-03-28 12:31:48,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 12.24/5.92 [2019-03-28 12:31:48,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 12.24/5.92 [2019-03-28 12:31:48,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.92 [2019-03-28 12:31:48,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 12.24/5.92 [2019-03-28 12:31:48,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.92 [2019-03-28 12:31:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 12.24/5.92 [2019-03-28 12:31:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 12.24/5.92 [2019-03-28 12:31:48,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 12.24/5.92 [2019-03-28 12:31:48,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 12.24/5.92 [2019-03-28 12:31:48,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 12.24/5.92 [2019-03-28 12:31:48,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 12.24/5.92 [2019-03-28 12:31:48,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 12.24/5.92 [2019-03-28 12:31:48,482 INFO L87 Difference]: Start difference. First operand 15 states and 24 transitions. Second operand 3 states. 12.24/5.92 [2019-03-28 12:31:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 12.24/5.92 [2019-03-28 12:31:48,518 INFO L93 Difference]: Finished difference Result 23 states and 35 transitions. 12.24/5.92 [2019-03-28 12:31:48,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 12.24/5.92 [2019-03-28 12:31:48,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 12.24/5.92 [2019-03-28 12:31:48,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 12.24/5.92 [2019-03-28 12:31:48,520 INFO L225 Difference]: With dead ends: 23 12.24/5.92 [2019-03-28 12:31:48,520 INFO L226 Difference]: Without dead ends: 10 12.24/5.92 [2019-03-28 12:31:48,520 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 12.24/5.92 [2019-03-28 12:31:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. 12.24/5.92 [2019-03-28 12:31:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. 12.24/5.92 [2019-03-28 12:31:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. 12.24/5.92 [2019-03-28 12:31:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. 12.24/5.92 [2019-03-28 12:31:48,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 5 12.24/5.92 [2019-03-28 12:31:48,523 INFO L84 Accepts]: Finished accepts. word is rejected. 12.24/5.92 [2019-03-28 12:31:48,523 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. 12.24/5.92 [2019-03-28 12:31:48,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 12.24/5.92 [2019-03-28 12:31:48,524 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. 12.24/5.92 [2019-03-28 12:31:48,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 12.24/5.92 [2019-03-28 12:31:48,524 INFO L394 BasicCegarLoop]: Found error trace 12.24/5.92 [2019-03-28 12:31:48,524 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] 12.24/5.92 [2019-03-28 12:31:48,525 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== 12.24/5.92 [2019-03-28 12:31:48,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 12.24/5.92 [2019-03-28 12:31:48,525 INFO L82 PathProgramCache]: Analyzing trace with hash 70430368, now seen corresponding path program 1 times 12.24/5.92 [2019-03-28 12:31:48,525 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 12.24/5.92 [2019-03-28 12:31:48,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 12.24/5.92 [2019-03-28 12:31:48,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.92 [2019-03-28 12:31:48,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 12.24/5.92 [2019-03-28 12:31:48,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 12.24/5.92 [2019-03-28 12:31:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 12.24/5.92 [2019-03-28 12:31:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 12.24/5.92 [2019-03-28 12:31:48,575 INFO L469 BasicCegarLoop]: Counterexample might be feasible 12.24/5.92 [2019-03-28 12:31:48,599 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg 12.24/5.92 [2019-03-28 12:31:48,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:31:48 BasicIcfg 12.24/5.92 [2019-03-28 12:31:48,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- 12.24/5.92 [2019-03-28 12:31:48,619 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- 12.24/5.92 [2019-03-28 12:31:48,619 INFO L271 PluginConnector]: Initializing BuchiAutomizer... 12.24/5.92 [2019-03-28 12:31:48,622 INFO L276 PluginConnector]: BuchiAutomizer initialized 12.24/5.92 [2019-03-28 12:31:48,623 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 12.24/5.92 [2019-03-28 12:31:48,623 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 12.24/5.92 [2019-03-28 12:31:48,623 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 12.24/5.92 [2019-03-28 12:31:48,623 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 12.24/5.92 [2019-03-28 12:31:48,623 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 12.24/5.92 [2019-03-28 12:31:48,623 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- 12.24/5.92 [2019-03-28 12:31:48,624 INFO L168 Benchmark]: Toolchain (without parser) took 1535.17 ms. Allocated memory was 649.6 MB in the beginning and 680.0 MB in the end (delta: 30.4 MB). Free memory was 565.2 MB in the beginning and 554.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 40.7 MB. Max. memory is 50.3 GB. 12.24/5.92 [2019-03-28 12:31:48,626 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.4 MB. There was no memory consumed. Max. memory is 50.3 GB. 12.24/5.92 [2019-03-28 12:31:48,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.71 ms. Allocated memory was 649.6 MB in the beginning and 680.0 MB in the end (delta: 30.4 MB). Free memory was 565.2 MB in the beginning and 646.0 MB in the end (delta: -80.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 50.3 GB. 12.24/5.92 [2019-03-28 12:31:48,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.39 ms. Allocated memory is still 680.0 MB. Free memory was 646.0 MB in the beginning and 643.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. 12.24/5.92 [2019-03-28 12:31:48,628 INFO L168 Benchmark]: Boogie Preprocessor took 23.39 ms. Allocated memory is still 680.0 MB. Free memory was 643.3 MB in the beginning and 642.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. 12.24/5.92 [2019-03-28 12:31:48,628 INFO L168 Benchmark]: RCFGBuilder took 247.59 ms. Allocated memory is still 680.0 MB. Free memory was 642.0 MB in the beginning and 625.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 50.3 GB. 12.24/5.92 [2019-03-28 12:31:48,629 INFO L168 Benchmark]: BlockEncodingV2 took 104.57 ms. Allocated memory is still 680.0 MB. Free memory was 625.2 MB in the beginning and 618.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 50.3 GB. 12.24/5.92 [2019-03-28 12:31:48,629 INFO L168 Benchmark]: TraceAbstraction took 802.55 ms. Allocated memory is still 680.0 MB. Free memory was 618.4 MB in the beginning and 554.9 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 50.3 GB. 12.24/5.92 [2019-03-28 12:31:48,630 INFO L168 Benchmark]: BuchiAutomizer took 4.59 ms. Allocated memory is still 680.0 MB. Free memory is still 554.9 MB. There was no memory consumed. Max. memory is 50.3 GB. 12.24/5.92 [2019-03-28 12:31:48,634 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### 12.24/5.92 --- Results --- 12.24/5.92 * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: 12.24/5.92 - StatisticsResult: Initial Icfg 12.24/5.92 16 locations, 18 edges 12.24/5.92 - StatisticsResult: Encoded RCFG 12.24/5.92 12 locations, 21 edges 12.24/5.92 * Results from de.uni_freiburg.informatik.ultimate.core: 12.24/5.92 - StatisticsResult: Toolchain Benchmarks 12.24/5.92 Benchmark results are: 12.24/5.92 * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.4 MB. There was no memory consumed. Max. memory is 50.3 GB. 12.24/5.92 * CACSL2BoogieTranslator took 307.71 ms. Allocated memory was 649.6 MB in the beginning and 680.0 MB in the end (delta: 30.4 MB). Free memory was 565.2 MB in the beginning and 646.0 MB in the end (delta: -80.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 50.3 GB. 12.24/5.92 * Boogie Procedure Inliner took 39.39 ms. Allocated memory is still 680.0 MB. Free memory was 646.0 MB in the beginning and 643.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. 12.24/5.92 * Boogie Preprocessor took 23.39 ms. Allocated memory is still 680.0 MB. Free memory was 643.3 MB in the beginning and 642.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. 12.24/5.92 * RCFGBuilder took 247.59 ms. Allocated memory is still 680.0 MB. Free memory was 642.0 MB in the beginning and 625.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 50.3 GB. 12.24/5.92 * BlockEncodingV2 took 104.57 ms. Allocated memory is still 680.0 MB. Free memory was 625.2 MB in the beginning and 618.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 50.3 GB. 12.24/5.92 * TraceAbstraction took 802.55 ms. Allocated memory is still 680.0 MB. Free memory was 618.4 MB in the beginning and 554.9 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 50.3 GB. 12.24/5.92 * BuchiAutomizer took 4.59 ms. Allocated memory is still 680.0 MB. Free memory is still 554.9 MB. There was no memory consumed. Max. memory is 50.3 GB. 12.24/5.92 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: 12.24/5.92 - CounterExampleResult [Line: 14]: pointer dereference may fail 12.24/5.92 pointer dereference may fail 12.24/5.92 We found a FailurePath: 12.24/5.92 [L10] int i = __VERIFIER_nondet_int(); 12.24/5.92 [L11] int a[10]; 12.24/5.92 [L12] 0 <= i && i < 10 && a[i] >= 0 12.24/5.92 [L12] EXPR a[i] 12.24/5.92 [L12] 0 <= i && i < 10 && a[i] >= 0 12.24/5.92 [L12] COND TRUE 0 <= i && i < 10 && a[i] >= 0 12.24/5.92 [L13] i = __VERIFIER_nondet_int() 12.24/5.92 [L14] a[i] = 0 12.24/5.92 12.24/5.92 - StatisticsResult: Ultimate Automizer benchmark data 12.24/5.92 CFG has 1 procedures, 12 locations, 4 error locations. UNSAFE Result, 0.7s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 59 SDslu, 11 SDs, 0 SdLazy, 74 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available 12.24/5.92 RESULT: Ultimate proved your program to be incorrect! 12.24/5.92 !SESSION 2019-03-28 12:31:43.781 ----------------------------------------------- 12.24/5.92 eclipse.buildId=unknown 12.24/5.92 java.version=1.8.0_181 12.24/5.92 java.vendor=Oracle Corporation 12.24/5.92 BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US 12.24/5.92 Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c 12.24/5.92 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 -i /export/starexec/sandbox/benchmark/theBenchmark.c 12.24/5.92 12.24/5.92 !ENTRY org.eclipse.core.resources 2 10035 2019-03-28 12:31:48.866 12.24/5.92 !MESSAGE The workspace will exit with unsaved changes in this session. 12.24/5.92 Received shutdown request... 12.24/5.92 Ultimate: 12.24/5.92 GTK+ Version Check 12.24/5.92 EOF