16.29/7.46 16.29/7.46 Ultimate: Cannot open display: 16.29/7.46 This is Ultimate 0.1.24-8dc7c08-m 16.29/7.46 [2019-03-28 12:19:46,124 INFO L170 SettingsManager]: Resetting all preferences to default values... 16.29/7.46 [2019-03-28 12:19:46,126 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values 16.29/7.46 [2019-03-28 12:19:46,139 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 16.29/7.46 [2019-03-28 12:19:46,139 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values 16.29/7.46 [2019-03-28 12:19:46,140 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values 16.29/7.46 [2019-03-28 12:19:46,141 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values 16.29/7.46 [2019-03-28 12:19:46,142 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values 16.29/7.46 [2019-03-28 12:19:46,144 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values 16.29/7.46 [2019-03-28 12:19:46,145 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values 16.29/7.46 [2019-03-28 12:19:46,146 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 16.29/7.46 [2019-03-28 12:19:46,146 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values 16.29/7.46 [2019-03-28 12:19:46,147 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values 16.29/7.46 [2019-03-28 12:19:46,147 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values 16.29/7.46 [2019-03-28 12:19:46,148 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values 16.29/7.46 [2019-03-28 12:19:46,149 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values 16.29/7.46 [2019-03-28 12:19:46,150 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values 16.29/7.46 [2019-03-28 12:19:46,152 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values 16.29/7.46 [2019-03-28 12:19:46,154 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values 16.29/7.46 [2019-03-28 12:19:46,155 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values 16.29/7.46 [2019-03-28 12:19:46,156 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values 16.29/7.46 [2019-03-28 12:19:46,157 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values 16.29/7.46 [2019-03-28 12:19:46,160 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 16.29/7.46 [2019-03-28 12:19:46,160 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... 16.29/7.46 [2019-03-28 12:19:46,160 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values 16.29/7.46 [2019-03-28 12:19:46,161 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values 16.29/7.46 [2019-03-28 12:19:46,161 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values 16.29/7.46 [2019-03-28 12:19:46,162 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... 16.29/7.46 [2019-03-28 12:19:46,162 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values 16.29/7.46 [2019-03-28 12:19:46,163 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values 16.29/7.46 [2019-03-28 12:19:46,164 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values 16.29/7.46 [2019-03-28 12:19:46,164 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values 16.29/7.46 [2019-03-28 12:19:46,165 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 16.29/7.46 [2019-03-28 12:19:46,166 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values 16.29/7.46 [2019-03-28 12:19:46,166 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 16.29/7.46 [2019-03-28 12:19:46,166 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... 16.29/7.46 [2019-03-28 12:19:46,167 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values 16.29/7.46 [2019-03-28 12:19:46,168 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values 16.29/7.46 [2019-03-28 12:19:46,168 INFO L181 SettingsManager]: Finished resetting all preferences to default values... 16.29/7.46 [2019-03-28 12:19:46,169 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox2/solver/bin/./../termcomp2017.epf 16.29/7.46 [2019-03-28 12:19:46,183 INFO L110 SettingsManager]: Loading preferences was successful 16.29/7.46 [2019-03-28 12:19:46,183 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: 16.29/7.46 [2019-03-28 12:19:46,184 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: 16.29/7.46 [2019-03-28 12:19:46,184 INFO L133 SettingsManager]: * Rewrite not-equals=true 16.29/7.46 [2019-03-28 12:19:46,185 INFO L133 SettingsManager]: * Create parallel compositions if possible=false 16.29/7.46 [2019-03-28 12:19:46,185 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE 16.29/7.46 [2019-03-28 12:19:46,185 INFO L133 SettingsManager]: * Use SBE=true 16.29/7.46 [2019-03-28 12:19:46,185 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: 16.29/7.46 [2019-03-28 12:19:46,185 INFO L133 SettingsManager]: * Use old map elimination=false 16.29/7.46 [2019-03-28 12:19:46,185 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false 16.29/7.46 [2019-03-28 12:19:46,186 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION 16.29/7.46 [2019-03-28 12:19:46,186 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true 16.29/7.46 [2019-03-28 12:19:46,186 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES 16.29/7.46 [2019-03-28 12:19:46,186 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true 16.29/7.46 [2019-03-28 12:19:46,186 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 16.29/7.46 [2019-03-28 12:19:46,186 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: 16.29/7.46 [2019-03-28 12:19:46,187 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false 16.29/7.46 [2019-03-28 12:19:46,187 INFO L133 SettingsManager]: * Check division by zero=IGNORE 16.29/7.46 [2019-03-28 12:19:46,187 INFO L133 SettingsManager]: * Check if freed pointer was valid=false 16.29/7.46 [2019-03-28 12:19:46,187 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false 16.29/7.46 [2019-03-28 12:19:46,187 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE 16.29/7.46 [2019-03-28 12:19:46,187 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: 16.29/7.46 [2019-03-28 12:19:46,188 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements 16.29/7.46 [2019-03-28 12:19:46,188 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump 16.29/7.46 [2019-03-28 12:19:46,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 16.29/7.46 [2019-03-28 12:19:46,188 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: 16.29/7.46 [2019-03-28 12:19:46,188 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles 16.29/7.46 [2019-03-28 12:19:46,189 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL 16.29/7.46 [2019-03-28 12:19:46,189 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 16.29/7.46 [2019-03-28 12:19:46,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp 16.29/7.46 [2019-03-28 12:19:46,228 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized 16.29/7.46 [2019-03-28 12:19:46,231 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. 16.29/7.46 [2019-03-28 12:19:46,232 INFO L271 PluginConnector]: Initializing CDTParser... 16.29/7.46 [2019-03-28 12:19:46,233 INFO L276 PluginConnector]: CDTParser initialized 16.29/7.46 [2019-03-28 12:19:46,234 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox2/benchmark/theBenchmark.c 16.29/7.46 [2019-03-28 12:19:46,341 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox2/tmp/677ab394c1954d669fee4027670e9dd3/FLAG3a19a6d2a 16.29/7.46 [2019-03-28 12:19:46,741 INFO L307 CDTParser]: Found 1 translation units. 16.29/7.46 [2019-03-28 12:19:46,742 INFO L161 CDTParser]: Scanning /export/starexec/sandbox2/benchmark/theBenchmark.c 16.29/7.46 [2019-03-28 12:19:46,755 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox2/tmp/677ab394c1954d669fee4027670e9dd3/FLAG3a19a6d2a 16.29/7.46 [2019-03-28 12:19:47,090 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox2/tmp/677ab394c1954d669fee4027670e9dd3 16.29/7.46 [2019-03-28 12:19:47,101 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### 16.29/7.46 [2019-03-28 12:19:47,103 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. 16.29/7.46 [2019-03-28 12:19:47,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- 16.29/7.46 [2019-03-28 12:19:47,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... 16.29/7.46 [2019-03-28 12:19:47,108 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized 16.29/7.46 [2019-03-28 12:19:47,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aad2c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47, skipping insertion in model container 16.29/7.46 [2019-03-28 12:19:47,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode 16.29/7.46 [2019-03-28 12:19:47,158 INFO L176 MainTranslator]: Built tables and reachable declarations 16.29/7.46 [2019-03-28 12:19:47,489 INFO L206 PostProcessor]: Analyzing one entry point: main 16.29/7.46 [2019-03-28 12:19:47,499 INFO L191 MainTranslator]: Completed pre-run 16.29/7.46 [2019-03-28 12:19:47,544 INFO L206 PostProcessor]: Analyzing one entry point: main 16.29/7.46 [2019-03-28 12:19:47,587 INFO L195 MainTranslator]: Completed translation 16.29/7.46 [2019-03-28 12:19:47,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47 WrapperNode 16.29/7.46 [2019-03-28 12:19:47,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- 16.29/7.46 [2019-03-28 12:19:47,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- 16.29/7.46 [2019-03-28 12:19:47,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... 16.29/7.46 [2019-03-28 12:19:47,589 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized 16.29/7.46 [2019-03-28 12:19:47,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- 16.29/7.46 [2019-03-28 12:19:47,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- 16.29/7.46 [2019-03-28 12:19:47,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... 16.29/7.46 [2019-03-28 12:19:47,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized 16.29/7.46 [2019-03-28 12:19:47,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 [2019-03-28 12:19:47,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- 16.29/7.46 [2019-03-28 12:19:47,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- 16.29/7.46 [2019-03-28 12:19:47,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... 16.29/7.46 [2019-03-28 12:19:47,670 INFO L276 PluginConnector]: RCFGBuilder initialized 16.29/7.46 [2019-03-28 12:19:47,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (1/1) ... 16.29/7.46 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 16.29/7.46 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) 16.29/7.46 Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 16.29/7.46 [2019-03-28 12:19:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap 16.29/7.46 [2019-03-28 12:19:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ 16.29/7.46 [2019-03-28 12:19:47,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ 16.29/7.46 [2019-03-28 12:19:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc 16.29/7.46 [2019-03-28 12:19:47,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start 16.29/7.46 [2019-03-28 12:19:47,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start 16.29/7.46 [2019-03-28 12:19:48,050 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) 16.29/7.46 [2019-03-28 12:19:48,050 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. 16.29/7.46 [2019-03-28 12:19:48,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:19:48 BoogieIcfgContainer 16.29/7.46 [2019-03-28 12:19:48,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- 16.29/7.46 [2019-03-28 12:19:48,052 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- 16.29/7.46 [2019-03-28 12:19:48,053 INFO L271 PluginConnector]: Initializing BlockEncodingV2... 16.29/7.46 [2019-03-28 12:19:48,055 INFO L276 PluginConnector]: BlockEncodingV2 initialized 16.29/7.46 [2019-03-28 12:19:48,055 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:19:48" (1/1) ... 16.29/7.46 [2019-03-28 12:19:48,073 INFO L313 BlockEncoder]: Initial Icfg 45 locations, 50 edges 16.29/7.46 [2019-03-28 12:19:48,074 INFO L258 BlockEncoder]: Using Remove infeasible edges 16.29/7.46 [2019-03-28 12:19:48,075 INFO L263 BlockEncoder]: Using Maximize final states 16.29/7.46 [2019-03-28 12:19:48,076 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false 16.29/7.46 [2019-03-28 12:19:48,076 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE 16.29/7.46 [2019-03-28 12:19:48,078 INFO L296 BlockEncoder]: Using Remove sink states 16.29/7.46 [2019-03-28 12:19:48,079 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true 16.29/7.46 [2019-03-28 12:19:48,079 INFO L179 BlockEncoder]: Using Rewrite not-equals 16.29/7.46 [2019-03-28 12:19:48,105 INFO L185 BlockEncoder]: Using Use SBE 16.29/7.46 [2019-03-28 12:19:48,138 INFO L200 BlockEncoder]: SBE split 25 edges 16.29/7.46 [2019-03-28 12:19:48,144 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility 16.29/7.46 [2019-03-28 12:19:48,145 INFO L71 MaximizeFinalStates]: 0 new accepting states 16.29/7.46 [2019-03-28 12:19:48,165 INFO L100 BaseMinimizeStates]: Removed 12 edges and 6 locations by large block encoding 16.29/7.46 [2019-03-28 12:19:48,168 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states 16.29/7.46 [2019-03-28 12:19:48,169 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility 16.29/7.46 [2019-03-28 12:19:48,169 INFO L71 MaximizeFinalStates]: 0 new accepting states 16.29/7.46 [2019-03-28 12:19:48,170 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding 16.29/7.46 [2019-03-28 12:19:48,170 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states 16.29/7.46 [2019-03-28 12:19:48,171 INFO L313 BlockEncoder]: Encoded RCFG 38 locations, 74 edges 16.29/7.46 [2019-03-28 12:19:48,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:19:48 BasicIcfg 16.29/7.46 [2019-03-28 12:19:48,172 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- 16.29/7.46 [2019-03-28 12:19:48,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- 16.29/7.46 [2019-03-28 12:19:48,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... 16.29/7.46 [2019-03-28 12:19:48,176 INFO L276 PluginConnector]: TraceAbstraction initialized 16.29/7.46 [2019-03-28 12:19:48,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.03 12:19:47" (1/4) ... 16.29/7.46 [2019-03-28 12:19:48,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b4bfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:19:48, skipping insertion in model container 16.29/7.46 [2019-03-28 12:19:48,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:19:47" (2/4) ... 16.29/7.46 [2019-03-28 12:19:48,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b4bfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:19:48, skipping insertion in model container 16.29/7.46 [2019-03-28 12:19:48,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:19:48" (3/4) ... 16.29/7.46 [2019-03-28 12:19:48,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b4bfdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:19:48, skipping insertion in model container 16.29/7.46 [2019-03-28 12:19:48,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:19:48" (4/4) ... 16.29/7.46 [2019-03-28 12:19:48,180 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 16.29/7.46 [2019-03-28 12:19:48,189 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION 16.29/7.46 [2019-03-28 12:19:48,198 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. 16.29/7.46 [2019-03-28 12:19:48,215 INFO L257 AbstractCegarLoop]: Starting to check reachability of 20 error locations. 16.29/7.46 [2019-03-28 12:19:48,244 INFO L133 ementStrategyFactory]: Using default assertion order modulation 16.29/7.46 [2019-03-28 12:19:48,245 INFO L382 AbstractCegarLoop]: Interprodecural is true 16.29/7.46 [2019-03-28 12:19:48,245 INFO L383 AbstractCegarLoop]: Hoare is true 16.29/7.46 [2019-03-28 12:19:48,245 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates 16.29/7.46 [2019-03-28 12:19:48,245 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE 16.29/7.46 [2019-03-28 12:19:48,245 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION 16.29/7.46 [2019-03-28 12:19:48,246 INFO L387 AbstractCegarLoop]: Difference is false 16.29/7.46 [2019-03-28 12:19:48,246 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA 16.29/7.46 [2019-03-28 12:19:48,246 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== 16.29/7.46 [2019-03-28 12:19:48,261 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. 16.29/7.46 [2019-03-28 12:19:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 16.29/7.46 [2019-03-28 12:19:48,267 INFO L394 BasicCegarLoop]: Found error trace 16.29/7.46 [2019-03-28 12:19:48,268 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] 16.29/7.46 [2019-03-28 12:19:48,268 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== 16.29/7.46 [2019-03-28 12:19:48,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.29/7.46 [2019-03-28 12:19:48,273 INFO L82 PathProgramCache]: Analyzing trace with hash 139406, now seen corresponding path program 1 times 16.29/7.46 [2019-03-28 12:19:48,275 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.29/7.46 [2019-03-28 12:19:48,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.29/7.46 [2019-03-28 12:19:48,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:48,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:48,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.29/7.46 [2019-03-28 12:19:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.29/7.46 [2019-03-28 12:19:48,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.29/7.46 [2019-03-28 12:19:48,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 16.29/7.46 [2019-03-28 12:19:48,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 16.29/7.46 [2019-03-28 12:19:48,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 16.29/7.46 [2019-03-28 12:19:48,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 16.29/7.46 [2019-03-28 12:19:48,460 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. 16.29/7.46 [2019-03-28 12:19:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.29/7.46 [2019-03-28 12:19:48,656 INFO L93 Difference]: Finished difference Result 40 states and 79 transitions. 16.29/7.46 [2019-03-28 12:19:48,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 16.29/7.46 [2019-03-28 12:19:48,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 16.29/7.46 [2019-03-28 12:19:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.29/7.46 [2019-03-28 12:19:48,672 INFO L225 Difference]: With dead ends: 40 16.29/7.46 [2019-03-28 12:19:48,672 INFO L226 Difference]: Without dead ends: 33 16.29/7.46 [2019-03-28 12:19:48,675 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 16.29/7.46 [2019-03-28 12:19:48,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. 16.29/7.46 [2019-03-28 12:19:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. 16.29/7.46 [2019-03-28 12:19:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. 16.29/7.46 [2019-03-28 12:19:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 60 transitions. 16.29/7.46 [2019-03-28 12:19:48,715 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 60 transitions. Word has length 3 16.29/7.46 [2019-03-28 12:19:48,715 INFO L84 Accepts]: Finished accepts. word is rejected. 16.29/7.46 [2019-03-28 12:19:48,715 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 60 transitions. 16.29/7.46 [2019-03-28 12:19:48,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 16.29/7.46 [2019-03-28 12:19:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 60 transitions. 16.29/7.46 [2019-03-28 12:19:48,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 16.29/7.46 [2019-03-28 12:19:48,716 INFO L394 BasicCegarLoop]: Found error trace 16.29/7.46 [2019-03-28 12:19:48,716 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] 16.29/7.46 [2019-03-28 12:19:48,717 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== 16.29/7.46 [2019-03-28 12:19:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.29/7.46 [2019-03-28 12:19:48,717 INFO L82 PathProgramCache]: Analyzing trace with hash 139408, now seen corresponding path program 1 times 16.29/7.46 [2019-03-28 12:19:48,717 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.29/7.46 [2019-03-28 12:19:48,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.29/7.46 [2019-03-28 12:19:48,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:48,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:48,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.29/7.46 [2019-03-28 12:19:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.29/7.46 [2019-03-28 12:19:48,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.29/7.46 [2019-03-28 12:19:48,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 16.29/7.46 [2019-03-28 12:19:48,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 16.29/7.46 [2019-03-28 12:19:48,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 16.29/7.46 [2019-03-28 12:19:48,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 16.29/7.46 [2019-03-28 12:19:48,752 INFO L87 Difference]: Start difference. First operand 31 states and 60 transitions. Second operand 3 states. 16.29/7.46 [2019-03-28 12:19:48,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.29/7.46 [2019-03-28 12:19:48,887 INFO L93 Difference]: Finished difference Result 34 states and 70 transitions. 16.29/7.46 [2019-03-28 12:19:48,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 16.29/7.46 [2019-03-28 12:19:48,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 16.29/7.46 [2019-03-28 12:19:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.29/7.46 [2019-03-28 12:19:48,888 INFO L225 Difference]: With dead ends: 34 16.29/7.46 [2019-03-28 12:19:48,889 INFO L226 Difference]: Without dead ends: 29 16.29/7.46 [2019-03-28 12:19:48,890 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 16.29/7.46 [2019-03-28 12:19:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. 16.29/7.46 [2019-03-28 12:19:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. 16.29/7.46 [2019-03-28 12:19:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. 16.29/7.46 [2019-03-28 12:19:48,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 50 transitions. 16.29/7.46 [2019-03-28 12:19:48,894 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 50 transitions. Word has length 3 16.29/7.46 [2019-03-28 12:19:48,894 INFO L84 Accepts]: Finished accepts. word is rejected. 16.29/7.46 [2019-03-28 12:19:48,895 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 50 transitions. 16.29/7.46 [2019-03-28 12:19:48,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 16.29/7.46 [2019-03-28 12:19:48,895 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 50 transitions. 16.29/7.46 [2019-03-28 12:19:48,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 16.29/7.46 [2019-03-28 12:19:48,895 INFO L394 BasicCegarLoop]: Found error trace 16.29/7.46 [2019-03-28 12:19:48,896 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] 16.29/7.46 [2019-03-28 12:19:48,896 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== 16.29/7.46 [2019-03-28 12:19:48,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.29/7.46 [2019-03-28 12:19:48,896 INFO L82 PathProgramCache]: Analyzing trace with hash 198300982, now seen corresponding path program 1 times 16.29/7.46 [2019-03-28 12:19:48,896 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.29/7.46 [2019-03-28 12:19:48,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.29/7.46 [2019-03-28 12:19:48,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:48,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:48,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.29/7.46 [2019-03-28 12:19:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.29/7.46 [2019-03-28 12:19:48,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.29/7.46 [2019-03-28 12:19:48,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 16.29/7.46 [2019-03-28 12:19:48,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states 16.29/7.46 [2019-03-28 12:19:48,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. 16.29/7.46 [2019-03-28 12:19:48,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 16.29/7.46 [2019-03-28 12:19:48,944 INFO L87 Difference]: Start difference. First operand 26 states and 50 transitions. Second operand 4 states. 16.29/7.46 [2019-03-28 12:19:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.29/7.46 [2019-03-28 12:19:49,099 INFO L93 Difference]: Finished difference Result 51 states and 100 transitions. 16.29/7.46 [2019-03-28 12:19:49,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 16.29/7.46 [2019-03-28 12:19:49,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 16.29/7.46 [2019-03-28 12:19:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.29/7.46 [2019-03-28 12:19:49,101 INFO L225 Difference]: With dead ends: 51 16.29/7.46 [2019-03-28 12:19:49,101 INFO L226 Difference]: Without dead ends: 38 16.29/7.46 [2019-03-28 12:19:49,102 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 16.29/7.46 [2019-03-28 12:19:49,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. 16.29/7.46 [2019-03-28 12:19:49,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. 16.29/7.46 [2019-03-28 12:19:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. 16.29/7.46 [2019-03-28 12:19:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 65 transitions. 16.29/7.46 [2019-03-28 12:19:49,108 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 65 transitions. Word has length 8 16.29/7.46 [2019-03-28 12:19:49,109 INFO L84 Accepts]: Finished accepts. word is rejected. 16.29/7.46 [2019-03-28 12:19:49,109 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 65 transitions. 16.29/7.46 [2019-03-28 12:19:49,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. 16.29/7.46 [2019-03-28 12:19:49,109 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 65 transitions. 16.29/7.46 [2019-03-28 12:19:49,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 16.29/7.46 [2019-03-28 12:19:49,110 INFO L394 BasicCegarLoop]: Found error trace 16.29/7.46 [2019-03-28 12:19:49,110 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] 16.29/7.46 [2019-03-28 12:19:49,110 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== 16.29/7.46 [2019-03-28 12:19:49,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.29/7.46 [2019-03-28 12:19:49,111 INFO L82 PathProgramCache]: Analyzing trace with hash 198301013, now seen corresponding path program 1 times 16.29/7.46 [2019-03-28 12:19:49,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.29/7.46 [2019-03-28 12:19:49,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.29/7.46 [2019-03-28 12:19:49,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.29/7.46 [2019-03-28 12:19:49,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.29/7.46 [2019-03-28 12:19:49,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.29/7.46 [2019-03-28 12:19:49,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 16.29/7.46 [2019-03-28 12:19:49,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states 16.29/7.46 [2019-03-28 12:19:49,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. 16.29/7.46 [2019-03-28 12:19:49,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 16.29/7.46 [2019-03-28 12:19:49,158 INFO L87 Difference]: Start difference. First operand 31 states and 65 transitions. Second operand 4 states. 16.29/7.46 [2019-03-28 12:19:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.29/7.46 [2019-03-28 12:19:49,303 INFO L93 Difference]: Finished difference Result 36 states and 66 transitions. 16.29/7.46 [2019-03-28 12:19:49,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 16.29/7.46 [2019-03-28 12:19:49,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 16.29/7.46 [2019-03-28 12:19:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.29/7.46 [2019-03-28 12:19:49,305 INFO L225 Difference]: With dead ends: 36 16.29/7.46 [2019-03-28 12:19:49,306 INFO L226 Difference]: Without dead ends: 33 16.29/7.46 [2019-03-28 12:19:49,306 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 16.29/7.46 [2019-03-28 12:19:49,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. 16.29/7.46 [2019-03-28 12:19:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. 16.29/7.46 [2019-03-28 12:19:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. 16.29/7.46 [2019-03-28 12:19:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 59 transitions. 16.29/7.46 [2019-03-28 12:19:49,314 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 59 transitions. Word has length 8 16.29/7.46 [2019-03-28 12:19:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. 16.29/7.46 [2019-03-28 12:19:49,314 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 59 transitions. 16.29/7.46 [2019-03-28 12:19:49,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. 16.29/7.46 [2019-03-28 12:19:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 59 transitions. 16.29/7.46 [2019-03-28 12:19:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 16.29/7.46 [2019-03-28 12:19:49,315 INFO L394 BasicCegarLoop]: Found error trace 16.29/7.46 [2019-03-28 12:19:49,315 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] 16.29/7.46 [2019-03-28 12:19:49,315 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== 16.29/7.46 [2019-03-28 12:19:49,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.29/7.46 [2019-03-28 12:19:49,316 INFO L82 PathProgramCache]: Analyzing trace with hash 198301016, now seen corresponding path program 1 times 16.29/7.46 [2019-03-28 12:19:49,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.29/7.46 [2019-03-28 12:19:49,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.29/7.46 [2019-03-28 12:19:49,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.29/7.46 [2019-03-28 12:19:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.29/7.46 [2019-03-28 12:19:49,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.29/7.46 [2019-03-28 12:19:49,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 16.29/7.46 [2019-03-28 12:19:49,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states 16.29/7.46 [2019-03-28 12:19:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. 16.29/7.46 [2019-03-28 12:19:49,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 16.29/7.46 [2019-03-28 12:19:49,368 INFO L87 Difference]: Start difference. First operand 30 states and 59 transitions. Second operand 4 states. 16.29/7.46 [2019-03-28 12:19:49,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.29/7.46 [2019-03-28 12:19:49,528 INFO L93 Difference]: Finished difference Result 48 states and 93 transitions. 16.29/7.46 [2019-03-28 12:19:49,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 16.29/7.46 [2019-03-28 12:19:49,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 16.29/7.46 [2019-03-28 12:19:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.29/7.46 [2019-03-28 12:19:49,530 INFO L225 Difference]: With dead ends: 48 16.29/7.46 [2019-03-28 12:19:49,530 INFO L226 Difference]: Without dead ends: 44 16.29/7.46 [2019-03-28 12:19:49,530 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 16.29/7.46 [2019-03-28 12:19:49,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. 16.29/7.46 [2019-03-28 12:19:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. 16.29/7.46 [2019-03-28 12:19:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. 16.29/7.46 [2019-03-28 12:19:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 77 transitions. 16.29/7.46 [2019-03-28 12:19:49,536 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 77 transitions. Word has length 8 16.29/7.46 [2019-03-28 12:19:49,536 INFO L84 Accepts]: Finished accepts. word is rejected. 16.29/7.46 [2019-03-28 12:19:49,537 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 77 transitions. 16.29/7.46 [2019-03-28 12:19:49,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. 16.29/7.46 [2019-03-28 12:19:49,537 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 77 transitions. 16.29/7.46 [2019-03-28 12:19:49,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 16.29/7.46 [2019-03-28 12:19:49,537 INFO L394 BasicCegarLoop]: Found error trace 16.29/7.46 [2019-03-28 12:19:49,538 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] 16.29/7.46 [2019-03-28 12:19:49,538 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== 16.29/7.46 [2019-03-28 12:19:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.29/7.46 [2019-03-28 12:19:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1636462837, now seen corresponding path program 1 times 16.29/7.46 [2019-03-28 12:19:49,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.29/7.46 [2019-03-28 12:19:49,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.29/7.46 [2019-03-28 12:19:49,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.29/7.46 [2019-03-28 12:19:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.29/7.46 [2019-03-28 12:19:49,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.29/7.46 [2019-03-28 12:19:49,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 16.29/7.46 [2019-03-28 12:19:49,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states 16.29/7.46 [2019-03-28 12:19:49,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. 16.29/7.46 [2019-03-28 12:19:49,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 16.29/7.46 [2019-03-28 12:19:49,622 INFO L87 Difference]: Start difference. First operand 39 states and 77 transitions. Second operand 4 states. 16.29/7.46 [2019-03-28 12:19:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.29/7.46 [2019-03-28 12:19:49,700 INFO L93 Difference]: Finished difference Result 39 states and 77 transitions. 16.29/7.46 [2019-03-28 12:19:49,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 16.29/7.46 [2019-03-28 12:19:49,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 16.29/7.46 [2019-03-28 12:19:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.29/7.46 [2019-03-28 12:19:49,701 INFO L225 Difference]: With dead ends: 39 16.29/7.46 [2019-03-28 12:19:49,701 INFO L226 Difference]: Without dead ends: 38 16.29/7.46 [2019-03-28 12:19:49,702 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 16.29/7.46 [2019-03-28 12:19:49,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. 16.29/7.46 [2019-03-28 12:19:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. 16.29/7.46 [2019-03-28 12:19:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. 16.29/7.46 [2019-03-28 12:19:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 76 transitions. 16.29/7.46 [2019-03-28 12:19:49,707 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 76 transitions. Word has length 10 16.29/7.46 [2019-03-28 12:19:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. 16.29/7.46 [2019-03-28 12:19:49,708 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 76 transitions. 16.29/7.46 [2019-03-28 12:19:49,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. 16.29/7.46 [2019-03-28 12:19:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 76 transitions. 16.29/7.46 [2019-03-28 12:19:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 16.29/7.46 [2019-03-28 12:19:49,709 INFO L394 BasicCegarLoop]: Found error trace 16.29/7.46 [2019-03-28 12:19:49,709 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] 16.29/7.46 [2019-03-28 12:19:49,709 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== 16.29/7.46 [2019-03-28 12:19:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.29/7.46 [2019-03-28 12:19:49,709 INFO L82 PathProgramCache]: Analyzing trace with hash -117356179, now seen corresponding path program 1 times 16.29/7.46 [2019-03-28 12:19:49,709 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.29/7.46 [2019-03-28 12:19:49,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.29/7.46 [2019-03-28 12:19:49,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.29/7.46 [2019-03-28 12:19:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.29/7.46 [2019-03-28 12:19:49,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. 16.29/7.46 [2019-03-28 12:19:49,758 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 16.29/7.46 No working directory specified, using /export/starexec/sandbox2/solver/bin/z3 16.29/7.46 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) 16.29/7.46 Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 16.29/7.46 [2019-03-28 12:19:49,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.29/7.46 [2019-03-28 12:19:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.29/7.46 [2019-03-28 12:19:49,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core 16.29/7.46 [2019-03-28 12:19:49,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... 16.29/7.46 [2019-03-28 12:19:49,849 INFO L374 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 16.29/7.46 [2019-03-28 12:19:49,850 INFO L427 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. 16.29/7.46 [2019-03-28 12:19:49,853 INFO L497 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size 16.29/7.46 [2019-03-28 12:19:49,853 INFO L427 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. 16.29/7.46 [2019-03-28 12:19:49,854 INFO L217 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 16.29/7.46 [2019-03-28 12:19:50,063 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 16.29/7.46 [2019-03-28 12:19:50,063 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: 16.29/7.46 java.lang.NullPointerException 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.select(SmtUtils.java:1322) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.multiDimensionalSelect(SmtUtils.java:363) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.multiDimensionalStore(SmtUtils.java:379) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.MultiDimensionalStore.(MultiDimensionalStore.java:73) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.MultiDimensionalNestedStore.getInnermost(MultiDimensionalNestedStore.java:101) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:269) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:146) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:191) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:177) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:81) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:169) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostElimation(ArrayIndexBasedCostEstimation.java:58) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:49) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.computeCostEtimation(ElimStorePlain.java:450) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:386) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:212) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:305) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) 16.29/7.46 at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) 16.29/7.46 at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) 16.29/7.46 [2019-03-28 12:19:50,066 INFO L168 Benchmark]: Toolchain (without parser) took 2964.14 ms. Allocated memory was 649.6 MB in the beginning and 683.7 MB in the end (delta: 34.1 MB). Free memory was 564.0 MB in the beginning and 400.2 MB in the end (delta: 163.8 MB). Peak memory consumption was 197.9 MB. Max. memory is 50.3 GB. 16.29/7.46 [2019-03-28 12:19:50,067 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.5 MB. There was no memory consumed. Max. memory is 50.3 GB. 16.29/7.46 [2019-03-28 12:19:50,068 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.07 ms. Allocated memory was 649.6 MB in the beginning and 683.7 MB in the end (delta: 34.1 MB). Free memory was 562.6 MB in the beginning and 632.1 MB in the end (delta: -69.5 MB). Peak memory consumption was 30.2 MB. Max. memory is 50.3 GB. 16.29/7.46 [2019-03-28 12:19:50,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.78 ms. Allocated memory is still 683.7 MB. Free memory was 632.1 MB in the beginning and 629.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. 16.29/7.46 [2019-03-28 12:19:50,069 INFO L168 Benchmark]: Boogie Preprocessor took 30.15 ms. Allocated memory is still 683.7 MB. Free memory was 629.4 MB in the beginning and 628.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. 16.29/7.46 [2019-03-28 12:19:50,069 INFO L168 Benchmark]: RCFGBuilder took 381.87 ms. Allocated memory is still 683.7 MB. Free memory was 628.0 MB in the beginning and 601.5 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 50.3 GB. 16.29/7.46 [2019-03-28 12:19:50,070 INFO L168 Benchmark]: BlockEncodingV2 took 119.31 ms. Allocated memory is still 683.7 MB. Free memory was 601.5 MB in the beginning and 590.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 50.3 GB. 16.29/7.46 [2019-03-28 12:19:50,071 INFO L168 Benchmark]: TraceAbstraction took 1893.19 ms. Allocated memory is still 683.7 MB. Free memory was 590.8 MB in the beginning and 400.2 MB in the end (delta: 190.6 MB). Peak memory consumption was 190.6 MB. Max. memory is 50.3 GB. 16.29/7.46 [2019-03-28 12:19:50,075 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### 16.29/7.46 --- Results --- 16.29/7.46 * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: 16.29/7.46 - StatisticsResult: Initial Icfg 16.29/7.46 45 locations, 50 edges 16.29/7.46 - StatisticsResult: Encoded RCFG 16.29/7.46 38 locations, 74 edges 16.29/7.46 * Results from de.uni_freiburg.informatik.ultimate.core: 16.29/7.46 - StatisticsResult: Toolchain Benchmarks 16.29/7.46 Benchmark results are: 16.29/7.46 * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.5 MB. There was no memory consumed. Max. memory is 50.3 GB. 16.29/7.46 * CACSL2BoogieTranslator took 484.07 ms. Allocated memory was 649.6 MB in the beginning and 683.7 MB in the end (delta: 34.1 MB). Free memory was 562.6 MB in the beginning and 632.1 MB in the end (delta: -69.5 MB). Peak memory consumption was 30.2 MB. Max. memory is 50.3 GB. 16.29/7.46 * Boogie Procedure Inliner took 50.78 ms. Allocated memory is still 683.7 MB. Free memory was 632.1 MB in the beginning and 629.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. 16.29/7.46 * Boogie Preprocessor took 30.15 ms. Allocated memory is still 683.7 MB. Free memory was 629.4 MB in the beginning and 628.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 50.3 GB. 16.29/7.46 * RCFGBuilder took 381.87 ms. Allocated memory is still 683.7 MB. Free memory was 628.0 MB in the beginning and 601.5 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 50.3 GB. 16.29/7.46 * BlockEncodingV2 took 119.31 ms. Allocated memory is still 683.7 MB. Free memory was 601.5 MB in the beginning and 590.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 50.3 GB. 16.29/7.46 * TraceAbstraction took 1893.19 ms. Allocated memory is still 683.7 MB. Free memory was 590.8 MB in the beginning and 400.2 MB in the end (delta: 190.6 MB). Peak memory consumption was 190.6 MB. Max. memory is 50.3 GB. 16.29/7.46 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: 16.29/7.46 - ExceptionOrErrorResult: NullPointerException: null 16.29/7.46 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.select(SmtUtils.java:1322) 16.29/7.46 RESULT: Ultimate could not prove your program: Toolchain returned no result. 16.29/7.46 !SESSION 2019-03-28 12:19:43.818 ----------------------------------------------- 16.29/7.46 eclipse.buildId=unknown 16.29/7.46 java.version=1.8.0_181 16.29/7.46 java.vendor=Oracle Corporation 16.29/7.46 BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US 16.29/7.46 Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox2/benchmark/theBenchmark.c 16.29/7.46 Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox2/tmp -i /export/starexec/sandbox2/benchmark/theBenchmark.c 16.29/7.46 16.29/7.46 !ENTRY org.eclipse.core.resources 2 10035 2019-03-28 12:19:50.307 16.29/7.46 !MESSAGE The workspace will exit with unsaved changes in this session. 16.29/7.46 Received shutdown request... 16.29/7.46 Ultimate: 16.29/7.46 GTK+ Version Check 16.29/7.46 EOF