232.02/218.80 232.02/218.80 Ultimate: Cannot open display: 232.02/218.80 This is Ultimate 0.1.24-8dc7c08-m 232.02/218.80 [2019-03-28 12:14:31,263 INFO L170 SettingsManager]: Resetting all preferences to default values... 232.02/218.80 [2019-03-28 12:14:31,266 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values 232.02/218.80 [2019-03-28 12:14:31,277 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 232.02/218.80 [2019-03-28 12:14:31,277 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values 232.02/218.80 [2019-03-28 12:14:31,278 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values 232.02/218.80 [2019-03-28 12:14:31,279 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values 232.02/218.80 [2019-03-28 12:14:31,281 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values 232.02/218.80 [2019-03-28 12:14:31,282 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values 232.02/218.80 [2019-03-28 12:14:31,283 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values 232.02/218.80 [2019-03-28 12:14:31,284 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 232.02/218.80 [2019-03-28 12:14:31,284 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values 232.02/218.80 [2019-03-28 12:14:31,285 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values 232.02/218.80 [2019-03-28 12:14:31,286 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values 232.02/218.80 [2019-03-28 12:14:31,287 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values 232.02/218.80 [2019-03-28 12:14:31,288 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values 232.02/218.80 [2019-03-28 12:14:31,289 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values 232.02/218.80 [2019-03-28 12:14:31,290 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values 232.02/218.80 [2019-03-28 12:14:31,292 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values 232.02/218.80 [2019-03-28 12:14:31,294 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values 232.02/218.80 [2019-03-28 12:14:31,295 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values 232.02/218.80 [2019-03-28 12:14:31,296 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values 232.02/218.80 [2019-03-28 12:14:31,298 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 232.02/218.80 [2019-03-28 12:14:31,298 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... 232.02/218.80 [2019-03-28 12:14:31,298 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values 232.02/218.80 [2019-03-28 12:14:31,299 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values 232.02/218.80 [2019-03-28 12:14:31,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values 232.02/218.80 [2019-03-28 12:14:31,300 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... 232.02/218.80 [2019-03-28 12:14:31,301 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values 232.02/218.80 [2019-03-28 12:14:31,301 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values 232.02/218.80 [2019-03-28 12:14:31,302 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values 232.02/218.80 [2019-03-28 12:14:31,303 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values 232.02/218.80 [2019-03-28 12:14:31,304 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 232.02/218.80 [2019-03-28 12:14:31,304 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values 232.02/218.80 [2019-03-28 12:14:31,304 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 232.02/218.80 [2019-03-28 12:14:31,305 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... 232.02/218.80 [2019-03-28 12:14:31,305 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values 232.02/218.80 [2019-03-28 12:14:31,306 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values 232.02/218.80 [2019-03-28 12:14:31,306 INFO L181 SettingsManager]: Finished resetting all preferences to default values... 232.02/218.80 [2019-03-28 12:14:31,307 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf 232.02/218.80 [2019-03-28 12:14:31,321 INFO L110 SettingsManager]: Loading preferences was successful 232.02/218.80 [2019-03-28 12:14:31,321 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: 232.02/218.80 [2019-03-28 12:14:31,322 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: 232.02/218.80 [2019-03-28 12:14:31,322 INFO L133 SettingsManager]: * Rewrite not-equals=true 232.02/218.80 [2019-03-28 12:14:31,323 INFO L133 SettingsManager]: * Create parallel compositions if possible=false 232.02/218.80 [2019-03-28 12:14:31,323 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE 232.02/218.80 [2019-03-28 12:14:31,323 INFO L133 SettingsManager]: * Use SBE=true 232.02/218.80 [2019-03-28 12:14:31,323 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: 232.02/218.80 [2019-03-28 12:14:31,323 INFO L133 SettingsManager]: * Use old map elimination=false 232.02/218.80 [2019-03-28 12:14:31,324 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false 232.02/218.80 [2019-03-28 12:14:31,324 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION 232.02/218.80 [2019-03-28 12:14:31,324 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true 232.02/218.80 [2019-03-28 12:14:31,324 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES 232.02/218.80 [2019-03-28 12:14:31,324 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true 232.02/218.80 [2019-03-28 12:14:31,324 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 232.02/218.80 [2019-03-28 12:14:31,325 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: 232.02/218.80 [2019-03-28 12:14:31,325 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false 232.02/218.80 [2019-03-28 12:14:31,325 INFO L133 SettingsManager]: * Check division by zero=IGNORE 232.02/218.80 [2019-03-28 12:14:31,325 INFO L133 SettingsManager]: * Check if freed pointer was valid=false 232.02/218.80 [2019-03-28 12:14:31,325 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false 232.02/218.80 [2019-03-28 12:14:31,325 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE 232.02/218.80 [2019-03-28 12:14:31,326 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: 232.02/218.80 [2019-03-28 12:14:31,326 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements 232.02/218.80 [2019-03-28 12:14:31,326 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump 232.02/218.80 [2019-03-28 12:14:31,326 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 232.02/218.80 [2019-03-28 12:14:31,326 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: 232.02/218.80 [2019-03-28 12:14:31,326 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles 232.02/218.80 [2019-03-28 12:14:31,327 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL 232.02/218.80 [2019-03-28 12:14:31,327 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 232.02/218.80 [2019-03-28 12:14:31,352 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp 232.02/218.80 [2019-03-28 12:14:31,365 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized 232.02/218.80 [2019-03-28 12:14:31,368 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. 232.02/218.80 [2019-03-28 12:14:31,370 INFO L271 PluginConnector]: Initializing CDTParser... 232.02/218.80 [2019-03-28 12:14:31,370 INFO L276 PluginConnector]: CDTParser initialized 232.02/218.80 [2019-03-28 12:14:31,371 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c 232.02/218.80 [2019-03-28 12:14:31,429 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/5abb3ade60b14639b2be4aef910533ff/FLAG0c80e9d6b 232.02/218.80 [2019-03-28 12:14:31,772 INFO L307 CDTParser]: Found 1 translation units. 232.02/218.80 [2019-03-28 12:14:31,773 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c 232.02/218.80 [2019-03-28 12:14:31,780 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/5abb3ade60b14639b2be4aef910533ff/FLAG0c80e9d6b 232.02/218.80 [2019-03-28 12:14:32,182 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/5abb3ade60b14639b2be4aef910533ff 232.02/218.80 [2019-03-28 12:14:32,193 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### 232.02/218.80 [2019-03-28 12:14:32,195 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. 232.02/218.80 [2019-03-28 12:14:32,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- 232.02/218.80 [2019-03-28 12:14:32,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... 232.02/218.80 [2019-03-28 12:14:32,200 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized 232.02/218.80 [2019-03-28 12:14:32,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17109237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32, skipping insertion in model container 232.02/218.80 [2019-03-28 12:14:32,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode 232.02/218.80 [2019-03-28 12:14:32,231 INFO L176 MainTranslator]: Built tables and reachable declarations 232.02/218.80 [2019-03-28 12:14:32,405 INFO L206 PostProcessor]: Analyzing one entry point: main 232.02/218.80 [2019-03-28 12:14:32,410 INFO L191 MainTranslator]: Completed pre-run 232.02/218.80 [2019-03-28 12:14:32,501 INFO L206 PostProcessor]: Analyzing one entry point: main 232.02/218.80 [2019-03-28 12:14:32,523 INFO L195 MainTranslator]: Completed translation 232.02/218.80 [2019-03-28 12:14:32,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32 WrapperNode 232.02/218.80 [2019-03-28 12:14:32,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- 232.02/218.80 [2019-03-28 12:14:32,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- 232.02/218.80 [2019-03-28 12:14:32,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... 232.02/218.80 [2019-03-28 12:14:32,525 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized 232.02/218.80 [2019-03-28 12:14:32,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- 232.02/218.80 [2019-03-28 12:14:32,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- 232.02/218.80 [2019-03-28 12:14:32,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... 232.02/218.80 [2019-03-28 12:14:32,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized 232.02/218.80 [2019-03-28 12:14:32,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 [2019-03-28 12:14:32,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- 232.02/218.80 [2019-03-28 12:14:32,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- 232.02/218.80 [2019-03-28 12:14:32,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... 232.02/218.80 [2019-03-28 12:14:32,618 INFO L276 PluginConnector]: RCFGBuilder initialized 232.02/218.80 [2019-03-28 12:14:32,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (1/1) ... 232.02/218.80 No working directory specified, using /export/starexec/sandbox/solver/bin/z3 232.02/218.80 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) 232.02/218.80 Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 232.02/218.80 [2019-03-28 12:14:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int 232.02/218.80 [2019-03-28 12:14:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start 232.02/218.80 [2019-03-28 12:14:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start 232.02/218.80 [2019-03-28 12:14:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int 232.02/218.80 [2019-03-28 12:14:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack 232.02/218.80 [2019-03-28 12:14:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc 232.02/218.80 [2019-03-28 12:14:33,138 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) 232.02/218.80 [2019-03-28 12:14:33,138 INFO L286 CfgBuilder]: Removed 14 assue(true) statements. 232.02/218.80 [2019-03-28 12:14:33,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:14:33 BoogieIcfgContainer 232.02/218.80 [2019-03-28 12:14:33,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- 232.02/218.80 [2019-03-28 12:14:33,140 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- 232.02/218.80 [2019-03-28 12:14:33,140 INFO L271 PluginConnector]: Initializing BlockEncodingV2... 232.02/218.80 [2019-03-28 12:14:33,143 INFO L276 PluginConnector]: BlockEncodingV2 initialized 232.02/218.80 [2019-03-28 12:14:33,143 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:14:33" (1/1) ... 232.02/218.80 [2019-03-28 12:14:33,164 INFO L313 BlockEncoder]: Initial Icfg 88 locations, 104 edges 232.02/218.80 [2019-03-28 12:14:33,165 INFO L258 BlockEncoder]: Using Remove infeasible edges 232.02/218.80 [2019-03-28 12:14:33,166 INFO L263 BlockEncoder]: Using Maximize final states 232.02/218.80 [2019-03-28 12:14:33,167 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false 232.02/218.80 [2019-03-28 12:14:33,167 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE 232.02/218.80 [2019-03-28 12:14:33,169 INFO L296 BlockEncoder]: Using Remove sink states 232.02/218.80 [2019-03-28 12:14:33,170 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true 232.02/218.80 [2019-03-28 12:14:33,170 INFO L179 BlockEncoder]: Using Rewrite not-equals 232.02/218.80 [2019-03-28 12:14:33,201 INFO L185 BlockEncoder]: Using Use SBE 232.02/218.80 [2019-03-28 12:14:33,210 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 232.02/218.80 [2019-03-28 12:14:33,364 INFO L200 BlockEncoder]: SBE split 35 edges 232.02/218.80 [2019-03-28 12:14:33,371 INFO L70 emoveInfeasibleEdges]: Removed 9 edges and 0 locations because of local infeasibility 232.02/218.80 [2019-03-28 12:14:33,373 INFO L71 MaximizeFinalStates]: 0 new accepting states 232.02/218.80 [2019-03-28 12:14:33,465 INFO L100 BaseMinimizeStates]: Removed 50 edges and 25 locations by large block encoding 232.02/218.80 [2019-03-28 12:14:33,468 INFO L70 RemoveSinkStates]: Removed 2 edges and 2 locations by removing sink states 232.02/218.80 [2019-03-28 12:14:33,470 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility 232.02/218.80 [2019-03-28 12:14:33,471 INFO L71 MaximizeFinalStates]: 0 new accepting states 232.02/218.80 [2019-03-28 12:14:33,471 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding 232.02/218.80 [2019-03-28 12:14:33,472 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states 232.02/218.80 [2019-03-28 12:14:33,473 INFO L313 BlockEncoder]: Encoded RCFG 61 locations, 358 edges 232.02/218.80 [2019-03-28 12:14:33,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:14:33 BasicIcfg 232.02/218.80 [2019-03-28 12:14:33,474 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- 232.02/218.80 [2019-03-28 12:14:33,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- 232.02/218.80 [2019-03-28 12:14:33,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... 232.02/218.80 [2019-03-28 12:14:33,478 INFO L276 PluginConnector]: TraceAbstraction initialized 232.02/218.80 [2019-03-28 12:14:33,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.03 12:14:32" (1/4) ... 232.02/218.80 [2019-03-28 12:14:33,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bee167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:14:33, skipping insertion in model container 232.02/218.80 [2019-03-28 12:14:33,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:14:32" (2/4) ... 232.02/218.80 [2019-03-28 12:14:33,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bee167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:14:33, skipping insertion in model container 232.02/218.80 [2019-03-28 12:14:33,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:14:33" (3/4) ... 232.02/218.80 [2019-03-28 12:14:33,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bee167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:14:33, skipping insertion in model container 232.02/218.80 [2019-03-28 12:14:33,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:14:33" (4/4) ... 232.02/218.80 [2019-03-28 12:14:33,483 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 232.02/218.80 [2019-03-28 12:14:33,492 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION 232.02/218.80 [2019-03-28 12:14:33,500 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 32 error locations. 232.02/218.80 [2019-03-28 12:14:33,518 INFO L257 AbstractCegarLoop]: Starting to check reachability of 32 error locations. 232.02/218.80 [2019-03-28 12:14:33,547 INFO L133 ementStrategyFactory]: Using default assertion order modulation 232.02/218.80 [2019-03-28 12:14:33,548 INFO L382 AbstractCegarLoop]: Interprodecural is true 232.02/218.80 [2019-03-28 12:14:33,548 INFO L383 AbstractCegarLoop]: Hoare is true 232.02/218.80 [2019-03-28 12:14:33,548 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates 232.02/218.80 [2019-03-28 12:14:33,548 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE 232.02/218.80 [2019-03-28 12:14:33,548 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION 232.02/218.80 [2019-03-28 12:14:33,548 INFO L387 AbstractCegarLoop]: Difference is false 232.02/218.80 [2019-03-28 12:14:33,549 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA 232.02/218.80 [2019-03-28 12:14:33,549 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== 232.02/218.80 [2019-03-28 12:14:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. 232.02/218.80 [2019-03-28 12:14:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 232.02/218.80 [2019-03-28 12:14:33,572 INFO L394 BasicCegarLoop]: Found error trace 232.02/218.80 [2019-03-28 12:14:33,573 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] 232.02/218.80 [2019-03-28 12:14:33,573 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION]=== 232.02/218.80 [2019-03-28 12:14:33,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 232.02/218.80 [2019-03-28 12:14:33,579 INFO L82 PathProgramCache]: Analyzing trace with hash 8276563, now seen corresponding path program 1 times 232.02/218.80 [2019-03-28 12:14:33,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 232.02/218.80 [2019-03-28 12:14:33,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 232.02/218.80 [2019-03-28 12:14:33,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.80 [2019-03-28 12:14:33,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 232.02/218.80 [2019-03-28 12:14:33,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.80 [2019-03-28 12:14:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 232.02/218.80 [2019-03-28 12:14:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 232.02/218.80 [2019-03-28 12:14:33,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 232.02/218.80 [2019-03-28 12:14:33,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 232.02/218.80 [2019-03-28 12:14:33,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 232.02/218.80 [2019-03-28 12:14:33,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 232.02/218.80 [2019-03-28 12:14:33,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 232.02/218.80 [2019-03-28 12:14:33,833 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. 232.02/218.80 [2019-03-28 12:14:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 232.02/218.80 [2019-03-28 12:14:35,568 INFO L93 Difference]: Finished difference Result 61 states and 358 transitions. 232.02/218.80 [2019-03-28 12:14:35,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 232.02/218.80 [2019-03-28 12:14:35,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 232.02/218.80 [2019-03-28 12:14:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 232.02/218.80 [2019-03-28 12:14:35,584 INFO L225 Difference]: With dead ends: 61 232.02/218.80 [2019-03-28 12:14:35,584 INFO L226 Difference]: Without dead ends: 59 232.02/218.80 [2019-03-28 12:14:35,587 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=6 232.02/218.80 [2019-03-28 12:14:35,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. 232.02/218.80 [2019-03-28 12:14:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. 232.02/218.80 [2019-03-28 12:14:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. 232.02/218.80 [2019-03-28 12:14:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 354 transitions. 232.02/218.80 [2019-03-28 12:14:35,638 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 354 transitions. Word has length 4 232.02/218.80 [2019-03-28 12:14:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. 232.02/218.80 [2019-03-28 12:14:35,639 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 354 transitions. 232.02/218.80 [2019-03-28 12:14:35,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 232.02/218.80 [2019-03-28 12:14:35,639 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 354 transitions. 232.02/218.80 [2019-03-28 12:14:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 232.02/218.80 [2019-03-28 12:14:35,640 INFO L394 BasicCegarLoop]: Found error trace 232.02/218.80 [2019-03-28 12:14:35,640 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] 232.02/218.80 [2019-03-28 12:14:35,640 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION]=== 232.02/218.80 [2019-03-28 12:14:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 232.02/218.80 [2019-03-28 12:14:35,641 INFO L82 PathProgramCache]: Analyzing trace with hash 8276565, now seen corresponding path program 1 times 232.02/218.80 [2019-03-28 12:14:35,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 232.02/218.80 [2019-03-28 12:14:35,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 232.02/218.80 [2019-03-28 12:14:35,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.80 [2019-03-28 12:14:35,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 232.02/218.80 [2019-03-28 12:14:35,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.80 [2019-03-28 12:14:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 232.02/218.80 [2019-03-28 12:14:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 232.02/218.80 [2019-03-28 12:14:35,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 232.02/218.80 [2019-03-28 12:14:35,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 232.02/218.80 [2019-03-28 12:14:35,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 232.02/218.80 [2019-03-28 12:14:35,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 232.02/218.80 [2019-03-28 12:14:35,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 232.02/218.80 [2019-03-28 12:14:35,730 INFO L87 Difference]: Start difference. First operand 59 states and 354 transitions. Second operand 3 states. 232.02/218.80 [2019-03-28 12:14:37,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 232.02/218.80 [2019-03-28 12:14:37,321 INFO L93 Difference]: Finished difference Result 116 states and 451 transitions. 232.02/218.80 [2019-03-28 12:14:37,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 232.02/218.80 [2019-03-28 12:14:37,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 232.02/218.80 [2019-03-28 12:14:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 232.02/218.80 [2019-03-28 12:14:37,323 INFO L225 Difference]: With dead ends: 116 232.02/218.80 [2019-03-28 12:14:37,323 INFO L226 Difference]: Without dead ends: 64 232.02/218.80 [2019-03-28 12:14:37,324 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=6 232.02/218.80 [2019-03-28 12:14:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. 232.02/218.80 [2019-03-28 12:14:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. 232.02/218.80 [2019-03-28 12:14:37,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. 232.02/218.80 [2019-03-28 12:14:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 356 transitions. 232.02/218.80 [2019-03-28 12:14:37,336 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 356 transitions. Word has length 4 232.02/218.80 [2019-03-28 12:14:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. 232.02/218.80 [2019-03-28 12:14:37,337 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 356 transitions. 232.02/218.80 [2019-03-28 12:14:37,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 232.02/218.80 [2019-03-28 12:14:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 356 transitions. 232.02/218.80 [2019-03-28 12:14:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 232.02/218.80 [2019-03-28 12:14:37,337 INFO L394 BasicCegarLoop]: Found error trace 232.02/218.80 [2019-03-28 12:14:37,338 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] 232.02/218.80 [2019-03-28 12:14:37,338 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION]=== 232.02/218.80 [2019-03-28 12:14:37,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 232.02/218.80 [2019-03-28 12:14:37,338 INFO L82 PathProgramCache]: Analyzing trace with hash 256562575, now seen corresponding path program 1 times 232.02/218.80 [2019-03-28 12:14:37,338 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 232.02/218.80 [2019-03-28 12:14:37,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 232.02/218.80 [2019-03-28 12:14:37,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.80 [2019-03-28 12:14:37,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 232.02/218.80 [2019-03-28 12:14:37,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.80 [2019-03-28 12:14:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 232.02/218.80 [2019-03-28 12:14:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 232.02/218.80 [2019-03-28 12:14:37,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 232.02/218.80 [2019-03-28 12:14:37,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 232.02/218.80 [2019-03-28 12:14:37,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 232.02/218.80 [2019-03-28 12:14:37,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 232.02/218.80 [2019-03-28 12:14:37,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 232.02/218.80 [2019-03-28 12:14:37,409 INFO L87 Difference]: Start difference. First operand 61 states and 356 transitions. Second operand 3 states. 232.02/218.81 [2019-03-28 12:14:38,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 232.02/218.81 [2019-03-28 12:14:38,939 INFO L93 Difference]: Finished difference Result 64 states and 361 transitions. 232.02/218.81 [2019-03-28 12:14:38,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 232.02/218.81 [2019-03-28 12:14:38,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 232.02/218.81 [2019-03-28 12:14:38,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 232.02/218.81 [2019-03-28 12:14:38,941 INFO L225 Difference]: With dead ends: 64 232.02/218.81 [2019-03-28 12:14:38,941 INFO L226 Difference]: Without dead ends: 63 232.02/218.81 [2019-03-28 12:14:38,942 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=6 232.02/218.81 [2019-03-28 12:14:38,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. 232.02/218.81 [2019-03-28 12:14:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. 232.02/218.81 [2019-03-28 12:14:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. 232.02/218.81 [2019-03-28 12:14:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 359 transitions. 232.02/218.81 [2019-03-28 12:14:38,951 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 359 transitions. Word has length 5 232.02/218.81 [2019-03-28 12:14:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. 232.02/218.81 [2019-03-28 12:14:38,951 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 359 transitions. 232.02/218.81 [2019-03-28 12:14:38,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 232.02/218.81 [2019-03-28 12:14:38,951 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 359 transitions. 232.02/218.81 [2019-03-28 12:14:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 232.02/218.81 [2019-03-28 12:14:38,952 INFO L394 BasicCegarLoop]: Found error trace 232.02/218.81 [2019-03-28 12:14:38,952 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] 232.02/218.81 [2019-03-28 12:14:38,952 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION]=== 232.02/218.81 [2019-03-28 12:14:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 232.02/218.81 [2019-03-28 12:14:38,953 INFO L82 PathProgramCache]: Analyzing trace with hash 256562573, now seen corresponding path program 1 times 232.02/218.81 [2019-03-28 12:14:38,953 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 232.02/218.81 [2019-03-28 12:14:38,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 232.02/218.81 [2019-03-28 12:14:38,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.81 [2019-03-28 12:14:38,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 232.02/218.81 [2019-03-28 12:14:38,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.81 [2019-03-28 12:14:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 232.02/218.81 [2019-03-28 12:14:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 232.02/218.81 [2019-03-28 12:14:39,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 232.02/218.81 [2019-03-28 12:14:39,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 232.02/218.81 [2019-03-28 12:14:39,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 232.02/218.81 [2019-03-28 12:14:39,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 232.02/218.81 [2019-03-28 12:14:39,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 232.02/218.81 [2019-03-28 12:14:39,004 INFO L87 Difference]: Start difference. First operand 62 states and 359 transitions. Second operand 3 states. 232.02/218.81 [2019-03-28 12:14:40,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 232.02/218.81 [2019-03-28 12:14:40,447 INFO L93 Difference]: Finished difference Result 62 states and 359 transitions. 232.02/218.81 [2019-03-28 12:14:40,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 232.02/218.81 [2019-03-28 12:14:40,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 232.02/218.81 [2019-03-28 12:14:40,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 232.02/218.81 [2019-03-28 12:14:40,449 INFO L225 Difference]: With dead ends: 62 232.02/218.81 [2019-03-28 12:14:40,449 INFO L226 Difference]: Without dead ends: 60 232.02/218.81 [2019-03-28 12:14:40,449 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=6 232.02/218.81 [2019-03-28 12:14:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. 232.02/218.81 [2019-03-28 12:14:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. 232.02/218.81 [2019-03-28 12:14:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. 232.02/218.81 [2019-03-28 12:14:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 353 transitions. 232.02/218.81 [2019-03-28 12:14:40,458 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 353 transitions. Word has length 5 232.02/218.81 [2019-03-28 12:14:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. 232.02/218.81 [2019-03-28 12:14:40,459 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 353 transitions. 232.02/218.81 [2019-03-28 12:14:40,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 232.02/218.81 [2019-03-28 12:14:40,459 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 353 transitions. 232.02/218.81 [2019-03-28 12:14:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 232.02/218.81 [2019-03-28 12:14:40,460 INFO L394 BasicCegarLoop]: Found error trace 232.02/218.81 [2019-03-28 12:14:40,460 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] 232.02/218.81 [2019-03-28 12:14:40,460 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr27REQUIRES_VIOLATION, ULTIMATE.startErr26REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr30REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr29REQUIRES_VIOLATION, ULTIMATE.startErr28REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr31REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION]=== 232.02/218.81 [2019-03-28 12:14:40,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 232.02/218.81 [2019-03-28 12:14:40,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1743571211, now seen corresponding path program 1 times 232.02/218.81 [2019-03-28 12:14:40,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 232.02/218.81 [2019-03-28 12:14:40,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 232.02/218.81 [2019-03-28 12:14:40,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.81 [2019-03-28 12:14:40,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 232.02/218.81 [2019-03-28 12:14:40,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 232.02/218.81 [2019-03-28 12:14:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 232.02/218.81 [2019-03-28 12:14:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 232.02/218.81 [2019-03-28 12:14:40,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. 232.02/218.81 [2019-03-28 12:14:40,565 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP 232.02/218.81 No working directory specified, using /export/starexec/sandbox/solver/bin/z3 232.02/218.81 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) 232.02/218.81 Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 232.02/218.81 [2019-03-28 12:14:40,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 232.02/218.81 [2019-03-28 12:14:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 232.02/218.81 [2019-03-28 12:14:40,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core 232.02/218.81 [2019-03-28 12:14:40,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... 232.02/218.81 [2019-03-28 12:14:40,675 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,684 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,686 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,689 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,691 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,693 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,695 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,696 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,700 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,702 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,703 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,705 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,707 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,709 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,711 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,712 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,714 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,716 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,717 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,719 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,721 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,723 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,724 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,726 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,728 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,729 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,731 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,733 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,747 INFO L374 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 232.02/218.81 [2019-03-28 12:14:40,748 INFO L427 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. 232.02/218.81 [2019-03-28 12:14:40,834 INFO L497 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size 232.02/218.81 [2019-03-28 12:14:40,840 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,850 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,851 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,852 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,856 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,857 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,858 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,861 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,883 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,884 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,888 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,889 INFO L189 IndexEqualityManager]: detected not equals via solver 232.02/218.81 [2019-03-28 12:14:40,933 INFO L340 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size 232.02/218.81 [2019-03-28 12:14:40,934 INFO L374 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 107 treesize of output 183 232.02/218.81 [2019-03-28 12:14:40,935 INFO L427 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. 232.02/218.81 [2019-03-28 12:14:41,029 INFO L497 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size 232.02/218.81 [2019-03-28 12:14:41,032 INFO L427 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. 232.02/218.81 [2019-03-28 12:14:41,033 INFO L217 ElimStorePlain]: Needed 3 recursive calls to eliminate 9 variables, input treesize:163, output treesize:141 232.02/218.81 [2019-03-28 12:14:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 232.02/218.81 [2019-03-28 12:14:41,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. 232.02/218.81 [2019-03-28 12:14:41,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 232.02/218.81 [2019-03-28 12:14:41,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states 232.02/218.81 [2019-03-28 12:14:41,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. 232.02/218.81 [2019-03-28 12:14:41,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 232.02/218.81 [2019-03-28 12:14:41,165 INFO L87 Difference]: Start difference. First operand 60 states and 353 transitions. Second operand 6 states. 232.02/218.81 [2019-03-28 12:18:07,020 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000) stderr output: (error "out of memory") 232.02/218.81 232.02/218.81 [2019-03-28 12:18:07,022 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: 232.02/218.81 de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000) Connection to SMT solver broken 232.02/218.81 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:652) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:256) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:271) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:715) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:628) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:472) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) 232.02/218.81 at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) 232.02/218.81 Caused by: java.io.IOException: Stream closed 232.02/218.81 at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) 232.02/218.81 at java.io.OutputStream.write(OutputStream.java:116) 232.02/218.81 at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) 232.02/218.81 at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) 232.02/218.81 at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) 232.02/218.81 at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) 232.02/218.81 at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) 232.02/218.81 at java.io.BufferedWriter.flush(BufferedWriter.java:254) 232.02/218.81 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) 232.02/218.81 ... 28 more 232.02/218.81 [2019-03-28 12:18:07,025 INFO L168 Benchmark]: Toolchain (without parser) took 214831.18 ms. Allocated memory was 649.6 MB in the beginning and 747.6 MB in the end (delta: 98.0 MB). Free memory was 563.8 MB in the beginning and 705.3 MB in the end (delta: -141.5 MB). There was no memory consumed. Max. memory is 50.3 GB. 232.02/218.81 [2019-03-28 12:18:07,026 INFO L168 Benchmark]: CDTParser took 0.17 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. 232.02/218.81 [2019-03-28 12:18:07,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.62 ms. Allocated memory was 649.6 MB in the beginning and 679.0 MB in the end (delta: 29.4 MB). Free memory was 563.8 MB in the beginning and 642.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 50.3 GB. 232.02/218.81 [2019-03-28 12:18:07,027 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.84 ms. Allocated memory is still 679.0 MB. Free memory was 642.6 MB in the beginning and 639.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 50.3 GB. 232.02/218.81 [2019-03-28 12:18:07,028 INFO L168 Benchmark]: Boogie Preprocessor took 42.87 ms. Allocated memory is still 679.0 MB. Free memory was 639.4 MB in the beginning and 637.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. 232.02/218.81 [2019-03-28 12:18:07,028 INFO L168 Benchmark]: RCFGBuilder took 522.53 ms. Allocated memory is still 679.0 MB. Free memory was 637.2 MB in the beginning and 602.0 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 50.3 GB. 232.02/218.81 [2019-03-28 12:18:07,029 INFO L168 Benchmark]: BlockEncodingV2 took 333.76 ms. Allocated memory is still 679.0 MB. Free memory was 602.0 MB in the beginning and 549.2 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 50.3 GB. 232.02/218.81 [2019-03-28 12:18:07,030 INFO L168 Benchmark]: TraceAbstraction took 213549.93 ms. Allocated memory was 679.0 MB in the beginning and 747.6 MB in the end (delta: 68.7 MB). Free memory was 548.1 MB in the beginning and 705.3 MB in the end (delta: -157.2 MB). There was no memory consumed. Max. memory is 50.3 GB. 232.02/218.81 [2019-03-28 12:18:07,033 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### 232.02/218.81 --- Results --- 232.02/218.81 * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: 232.02/218.81 - StatisticsResult: Initial Icfg 232.02/218.81 88 locations, 104 edges 232.02/218.81 - StatisticsResult: Encoded RCFG 232.02/218.81 61 locations, 358 edges 232.02/218.81 * Results from de.uni_freiburg.informatik.ultimate.core: 232.02/218.81 - StatisticsResult: Toolchain Benchmarks 232.02/218.81 Benchmark results are: 232.02/218.81 * CDTParser took 0.17 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. 232.02/218.81 * CACSL2BoogieTranslator took 328.62 ms. Allocated memory was 649.6 MB in the beginning and 679.0 MB in the end (delta: 29.4 MB). Free memory was 563.8 MB in the beginning and 642.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 50.3 GB. 232.02/218.81 * Boogie Procedure Inliner took 48.84 ms. Allocated memory is still 679.0 MB. Free memory was 642.6 MB in the beginning and 639.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 50.3 GB. 232.02/218.81 * Boogie Preprocessor took 42.87 ms. Allocated memory is still 679.0 MB. Free memory was 639.4 MB in the beginning and 637.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. 232.02/218.81 * RCFGBuilder took 522.53 ms. Allocated memory is still 679.0 MB. Free memory was 637.2 MB in the beginning and 602.0 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 50.3 GB. 232.02/218.81 * BlockEncodingV2 took 333.76 ms. Allocated memory is still 679.0 MB. Free memory was 602.0 MB in the beginning and 549.2 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 50.3 GB. 232.02/218.81 * TraceAbstraction took 213549.93 ms. Allocated memory was 679.0 MB in the beginning and 747.6 MB in the end (delta: 68.7 MB). Free memory was 548.1 MB in the beginning and 705.3 MB in the end (delta: -157.2 MB). There was no memory consumed. Max. memory is 50.3 GB. 232.02/218.81 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: 232.02/218.81 - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000) Connection to SMT solver broken 232.02/218.81 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) 232.02/218.81 RESULT: Ultimate could not prove your program: Toolchain returned no result. 232.02/218.81 !SESSION 2019-03-28 12:14:28.960 ----------------------------------------------- 232.02/218.81 eclipse.buildId=unknown 232.02/218.81 java.version=1.8.0_181 232.02/218.81 java.vendor=Oracle Corporation 232.02/218.81 BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US 232.02/218.81 Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c 232.02/218.81 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 232.02/218.81 232.02/218.81 !ENTRY org.eclipse.core.resources 2 10035 2019-03-28 12:18:07.065 232.02/218.81 !MESSAGE The workspace will exit with unsaved changes in this session. 232.02/218.81 Received shutdown request... 232.02/218.81 Ultimate: 232.02/218.81 GTK+ Version Check 232.02/218.81 EOF