MAYBE Ultimate: Cannot open display: This is Ultimate 0.1.24-8dc7c08-m [2020-06-22 08:16:10,214 INFO L170 SettingsManager]: Resetting all preferences to default values... [2020-06-22 08:16:10,216 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2020-06-22 08:16:10,228 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-06-22 08:16:10,228 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-06-22 08:16:10,229 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-06-22 08:16:10,230 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-06-22 08:16:10,232 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2020-06-22 08:16:10,233 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-06-22 08:16:10,234 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-06-22 08:16:10,235 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-06-22 08:16:10,235 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-06-22 08:16:10,236 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-06-22 08:16:10,237 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-06-22 08:16:10,238 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-06-22 08:16:10,239 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-06-22 08:16:10,239 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-06-22 08:16:10,241 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-06-22 08:16:10,243 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2020-06-22 08:16:10,244 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-06-22 08:16:10,245 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-06-22 08:16:10,246 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-06-22 08:16:10,249 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-06-22 08:16:10,249 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-06-22 08:16:10,249 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-06-22 08:16:10,250 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-06-22 08:16:10,250 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-06-22 08:16:10,251 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-06-22 08:16:10,251 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-06-22 08:16:10,252 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-06-22 08:16:10,252 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-06-22 08:16:10,253 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2020-06-22 08:16:10,254 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-06-22 08:16:10,254 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2020-06-22 08:16:10,255 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-06-22 08:16:10,255 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-06-22 08:16:10,255 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2020-06-22 08:16:10,256 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2020-06-22 08:16:10,257 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2020-06-22 08:16:10,257 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf [2020-06-22 08:16:10,272 INFO L110 SettingsManager]: Loading preferences was successful [2020-06-22 08:16:10,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2020-06-22 08:16:10,273 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-06-22 08:16:10,273 INFO L133 SettingsManager]: * Rewrite not-equals=true [2020-06-22 08:16:10,273 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2020-06-22 08:16:10,274 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:16:10,274 INFO L133 SettingsManager]: * Use SBE=true [2020-06-22 08:16:10,274 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-06-22 08:16:10,274 INFO L133 SettingsManager]: * Use old map elimination=false [2020-06-22 08:16:10,274 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2020-06-22 08:16:10,274 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2020-06-22 08:16:10,275 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2020-06-22 08:16:10,275 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-06-22 08:16:10,275 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true [2020-06-22 08:16:10,275 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2020-06-22 08:16:10,275 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-06-22 08:16:10,275 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-06-22 08:16:10,276 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2020-06-22 08:16:10,276 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2020-06-22 08:16:10,276 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-06-22 08:16:10,276 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2020-06-22 08:16:10,276 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-06-22 08:16:10,276 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-06-22 08:16:10,277 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-06-22 08:16:10,277 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 08:16:10,277 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-06-22 08:16:10,277 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-06-22 08:16:10,277 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2020-06-22 08:16:10,277 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-06-22 08:16:10,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-06-22 08:16:10,316 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-06-22 08:16:10,319 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-06-22 08:16:10,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-06-22 08:16:10,321 INFO L276 PluginConnector]: CDTParser initialized [2020-06-22 08:16:10,322 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 08:16:10,381 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/d42a1613efdf48dab7de5141a3be5815/FLAGfc9225d2e [2020-06-22 08:16:10,733 INFO L307 CDTParser]: Found 1 translation units. [2020-06-22 08:16:10,734 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2020-06-22 08:16:10,734 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2020-06-22 08:16:10,741 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/d42a1613efdf48dab7de5141a3be5815/FLAGfc9225d2e [2020-06-22 08:16:11,141 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/d42a1613efdf48dab7de5141a3be5815 [2020-06-22 08:16:11,152 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-06-22 08:16:11,154 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2020-06-22 08:16:11,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-06-22 08:16:11,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-06-22 08:16:11,159 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2020-06-22 08:16:11,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa5ed91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11, skipping insertion in model container [2020-06-22 08:16:11,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-06-22 08:16:11,188 INFO L176 MainTranslator]: Built tables and reachable declarations [2020-06-22 08:16:11,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:16:11,420 INFO L191 MainTranslator]: Completed pre-run [2020-06-22 08:16:11,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-06-22 08:16:11,456 INFO L195 MainTranslator]: Completed translation [2020-06-22 08:16:11,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11 WrapperNode [2020-06-22 08:16:11,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-06-22 08:16:11,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-06-22 08:16:11,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-06-22 08:16:11,458 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2020-06-22 08:16:11,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-06-22 08:16:11,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-06-22 08:16:11,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-06-22 08:16:11,502 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2020-06-22 08:16:11,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-06-22 08:16:11,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-06-22 08:16:11,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-06-22 08:16:11,529 INFO L276 PluginConnector]: RCFGBuilder initialized [2020-06-22 08:16:11,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (1/1) ... No working directory specified, using /export/starexec/sandbox/solver/bin/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2020-06-22 08:16:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-06-22 08:16:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-06-22 08:16:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-06-22 08:16:11,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-06-22 08:16:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-06-22 08:16:11,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-06-22 08:16:11,880 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-06-22 08:16:11,881 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2020-06-22 08:16:11,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:16:11 BoogieIcfgContainer [2020-06-22 08:16:11,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-06-22 08:16:11,883 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2020-06-22 08:16:11,883 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2020-06-22 08:16:11,885 INFO L276 PluginConnector]: BlockEncodingV2 initialized [2020-06-22 08:16:11,886 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:16:11" (1/1) ... [2020-06-22 08:16:11,905 INFO L313 BlockEncoder]: Initial Icfg 52 locations, 59 edges [2020-06-22 08:16:11,906 INFO L258 BlockEncoder]: Using Remove infeasible edges [2020-06-22 08:16:11,907 INFO L263 BlockEncoder]: Using Maximize final states [2020-06-22 08:16:11,908 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2020-06-22 08:16:11,908 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2020-06-22 08:16:11,910 INFO L296 BlockEncoder]: Using Remove sink states [2020-06-22 08:16:11,911 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2020-06-22 08:16:11,911 INFO L179 BlockEncoder]: Using Rewrite not-equals [2020-06-22 08:16:11,948 INFO L185 BlockEncoder]: Using Use SBE [2020-06-22 08:16:12,008 INFO L200 BlockEncoder]: SBE split 27 edges [2020-06-22 08:16:12,014 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2020-06-22 08:16:12,016 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:16:12,056 INFO L100 BaseMinimizeStates]: Removed 18 edges and 9 locations by large block encoding [2020-06-22 08:16:12,058 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2020-06-22 08:16:12,060 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2020-06-22 08:16:12,060 INFO L71 MaximizeFinalStates]: 0 new accepting states [2020-06-22 08:16:12,061 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2020-06-22 08:16:12,061 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2020-06-22 08:16:12,062 INFO L313 BlockEncoder]: Encoded RCFG 42 locations, 145 edges [2020-06-22 08:16:12,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:16:12 BasicIcfg [2020-06-22 08:16:12,062 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2020-06-22 08:16:12,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-06-22 08:16:12,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-06-22 08:16:12,067 INFO L276 PluginConnector]: TraceAbstraction initialized [2020-06-22 08:16:12,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.06 08:16:11" (1/4) ... [2020-06-22 08:16:12,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6b8c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:16:12, skipping insertion in model container [2020-06-22 08:16:12,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.06 08:16:11" (2/4) ... [2020-06-22 08:16:12,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6b8c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:16:12, skipping insertion in model container [2020-06-22 08:16:12,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:16:11" (3/4) ... [2020-06-22 08:16:12,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6b8c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:16:12, skipping insertion in model container [2020-06-22 08:16:12,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 22.06 08:16:12" (4/4) ... [2020-06-22 08:16:12,071 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2020-06-22 08:16:12,082 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2020-06-22 08:16:12,091 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 20 error locations. [2020-06-22 08:16:12,107 INFO L257 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2020-06-22 08:16:12,136 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2020-06-22 08:16:12,136 INFO L382 AbstractCegarLoop]: Interprodecural is true [2020-06-22 08:16:12,137 INFO L383 AbstractCegarLoop]: Hoare is true [2020-06-22 08:16:12,137 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2020-06-22 08:16:12,137 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-06-22 08:16:12,137 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-06-22 08:16:12,137 INFO L387 AbstractCegarLoop]: Difference is false [2020-06-22 08:16:12,137 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-06-22 08:16:12,137 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-06-22 08:16:12,153 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-06-22 08:16:12,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:16:12,159 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:16:12,160 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:16:12,160 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2020-06-22 08:16:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:16:12,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1183140613, now seen corresponding path program 1 times [2020-06-22 08:16:12,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:16:12,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:16:12,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:12,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:16:12,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:16:12,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:16:12,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:16:12,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 08:16:12,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 08:16:12,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 08:16:12,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:16:12,335 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 3 states. [2020-06-22 08:16:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:16:12,614 INFO L93 Difference]: Finished difference Result 81 states and 268 transitions. [2020-06-22 08:16:12,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 08:16:12,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-06-22 08:16:12,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:16:12,630 INFO L225 Difference]: With dead ends: 81 [2020-06-22 08:16:12,630 INFO L226 Difference]: Without dead ends: 42 [2020-06-22 08:16:12,634 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:16:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-06-22 08:16:12,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-06-22 08:16:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-06-22 08:16:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 80 transitions. [2020-06-22 08:16:12,673 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 80 transitions. Word has length 6 [2020-06-22 08:16:12,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:16:12,674 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 80 transitions. [2020-06-22 08:16:12,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 08:16:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 80 transitions. [2020-06-22 08:16:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:16:12,675 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:16:12,675 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:16:12,675 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2020-06-22 08:16:12,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:16:12,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1182872494, now seen corresponding path program 1 times [2020-06-22 08:16:12,676 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:16:12,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:16:12,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:12,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:16:12,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:16:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:16:12,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:16:12,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 08:16:12,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 08:16:12,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 08:16:12,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:16:12,716 INFO L87 Difference]: Start difference. First operand 42 states and 80 transitions. Second operand 3 states. [2020-06-22 08:16:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:16:12,832 INFO L93 Difference]: Finished difference Result 42 states and 80 transitions. [2020-06-22 08:16:12,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 08:16:12,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-06-22 08:16:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:16:12,834 INFO L225 Difference]: With dead ends: 42 [2020-06-22 08:16:12,834 INFO L226 Difference]: Without dead ends: 38 [2020-06-22 08:16:12,835 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 [2020-06-22 08:16:12,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-06-22 08:16:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-06-22 08:16:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-06-22 08:16:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 72 transitions. [2020-06-22 08:16:12,840 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 72 transitions. Word has length 6 [2020-06-22 08:16:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:16:12,841 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 72 transitions. [2020-06-22 08:16:12,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 08:16:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 72 transitions. [2020-06-22 08:16:12,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:16:12,841 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:16:12,842 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:16:12,842 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2020-06-22 08:16:12,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:16:12,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1182872496, now seen corresponding path program 1 times [2020-06-22 08:16:12,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:16:12,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:16:12,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:12,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:16:12,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:16:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:16:12,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:16:12,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 08:16:12,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 08:16:12,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 08:16:12,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:16:12,892 INFO L87 Difference]: Start difference. First operand 38 states and 72 transitions. Second operand 3 states. [2020-06-22 08:16:13,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:16:13,094 INFO L93 Difference]: Finished difference Result 109 states and 207 transitions. [2020-06-22 08:16:13,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 08:16:13,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-06-22 08:16:13,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:16:13,097 INFO L225 Difference]: With dead ends: 109 [2020-06-22 08:16:13,097 INFO L226 Difference]: Without dead ends: 74 [2020-06-22 08:16:13,098 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:16:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-06-22 08:16:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 47. [2020-06-22 08:16:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-06-22 08:16:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 96 transitions. [2020-06-22 08:16:13,106 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 96 transitions. Word has length 6 [2020-06-22 08:16:13,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:16:13,107 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 96 transitions. [2020-06-22 08:16:13,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 08:16:13,107 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 96 transitions. [2020-06-22 08:16:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:16:13,108 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:16:13,108 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:16:13,108 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2020-06-22 08:16:13,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:16:13,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1182932078, now seen corresponding path program 1 times [2020-06-22 08:16:13,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:16:13,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:16:13,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:16:13,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:16:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:16:13,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:16:13,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 08:16:13,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 08:16:13,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 08:16:13,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-06-22 08:16:13,157 INFO L87 Difference]: Start difference. First operand 47 states and 96 transitions. Second operand 4 states. [2020-06-22 08:16:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:16:13,326 INFO L93 Difference]: Finished difference Result 51 states and 96 transitions. [2020-06-22 08:16:13,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 08:16:13,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-06-22 08:16:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:16:13,327 INFO L225 Difference]: With dead ends: 51 [2020-06-22 08:16:13,327 INFO L226 Difference]: Without dead ends: 47 [2020-06-22 08:16:13,328 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 [2020-06-22 08:16:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-06-22 08:16:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-06-22 08:16:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-06-22 08:16:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 88 transitions. [2020-06-22 08:16:13,334 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 88 transitions. Word has length 6 [2020-06-22 08:16:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:16:13,335 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 88 transitions. [2020-06-22 08:16:13,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 08:16:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 88 transitions. [2020-06-22 08:16:13,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:16:13,336 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:16:13,336 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:16:13,336 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2020-06-22 08:16:13,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:16:13,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1182932079, now seen corresponding path program 1 times [2020-06-22 08:16:13,337 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:16:13,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:16:13,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:16:13,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:16:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:16:13,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:16:13,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-06-22 08:16:13,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-06-22 08:16:13,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-06-22 08:16:13,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-06-22 08:16:13,363 INFO L87 Difference]: Start difference. First operand 47 states and 88 transitions. Second operand 3 states. [2020-06-22 08:16:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:16:13,498 INFO L93 Difference]: Finished difference Result 88 states and 164 transitions. [2020-06-22 08:16:13,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-06-22 08:16:13,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-06-22 08:16:13,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:16:13,501 INFO L225 Difference]: With dead ends: 88 [2020-06-22 08:16:13,501 INFO L226 Difference]: Without dead ends: 85 [2020-06-22 08:16:13,501 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 [2020-06-22 08:16:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-06-22 08:16:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 57. [2020-06-22 08:16:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-06-22 08:16:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 104 transitions. [2020-06-22 08:16:13,509 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 104 transitions. Word has length 6 [2020-06-22 08:16:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:16:13,509 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 104 transitions. [2020-06-22 08:16:13,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-06-22 08:16:13,509 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 104 transitions. [2020-06-22 08:16:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-06-22 08:16:13,510 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:16:13,510 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-06-22 08:16:13,511 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2020-06-22 08:16:13,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:16:13,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1182933126, now seen corresponding path program 1 times [2020-06-22 08:16:13,511 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:16:13,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:16:13,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:16:13,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:16:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:16:13,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:16:13,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-06-22 08:16:13,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 08:16:13,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 08:16:13,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 08:16:13,543 INFO L87 Difference]: Start difference. First operand 57 states and 104 transitions. Second operand 4 states. [2020-06-22 08:16:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:16:13,658 INFO L93 Difference]: Finished difference Result 85 states and 158 transitions. [2020-06-22 08:16:13,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 08:16:13,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-06-22 08:16:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:16:13,660 INFO L225 Difference]: With dead ends: 85 [2020-06-22 08:16:13,660 INFO L226 Difference]: Without dead ends: 59 [2020-06-22 08:16:13,660 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 [2020-06-22 08:16:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-06-22 08:16:13,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2020-06-22 08:16:13,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-06-22 08:16:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 102 transitions. [2020-06-22 08:16:13,667 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 102 transitions. Word has length 6 [2020-06-22 08:16:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:16:13,667 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 102 transitions. [2020-06-22 08:16:13,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 08:16:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 102 transitions. [2020-06-22 08:16:13,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-06-22 08:16:13,668 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:16:13,668 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 08:16:13,669 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2020-06-22 08:16:13,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:16:13,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1071726976, now seen corresponding path program 1 times [2020-06-22 08:16:13,669 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:16:13,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:16:13,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:16:13,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-06-22 08:16:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-06-22 08:16:13,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-06-22 08:16:13,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-06-22 08:16:13,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-06-22 08:16:13,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-06-22 08:16:13,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 08:16:13,700 INFO L87 Difference]: Start difference. First operand 57 states and 102 transitions. Second operand 4 states. [2020-06-22 08:16:13,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-06-22 08:16:13,782 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2020-06-22 08:16:13,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-06-22 08:16:13,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-06-22 08:16:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-06-22 08:16:13,784 INFO L225 Difference]: With dead ends: 59 [2020-06-22 08:16:13,784 INFO L226 Difference]: Without dead ends: 56 [2020-06-22 08:16:13,784 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-06-22 08:16:13,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-06-22 08:16:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2020-06-22 08:16:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-06-22 08:16:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 84 transitions. [2020-06-22 08:16:13,790 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 84 transitions. Word has length 10 [2020-06-22 08:16:13,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-06-22 08:16:13,790 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 84 transitions. [2020-06-22 08:16:13,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-06-22 08:16:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 84 transitions. [2020-06-22 08:16:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-06-22 08:16:13,791 INFO L394 BasicCegarLoop]: Found error trace [2020-06-22 08:16:13,791 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-06-22 08:16:13,791 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2020-06-22 08:16:13,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-06-22 08:16:13,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1071725929, now seen corresponding path program 1 times [2020-06-22 08:16:13,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2020-06-22 08:16:13,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2020-06-22 08:16:13,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-06-22 08:16:13,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2020-06-22 08:16:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:16:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-06-22 08:16:13,849 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2020-06-22 08:16:13,870 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2020-06-22 08:16:13,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:16:13 BasicIcfg [2020-06-22 08:16:13,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-06-22 08:16:13,874 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-06-22 08:16:13,874 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-06-22 08:16:13,877 INFO L276 PluginConnector]: BuchiAutomizer initialized [2020-06-22 08:16:13,877 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:16:13,877 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:16:13,877 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:16:13,877 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:16:13,877 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination [2020-06-22 08:16:13,878 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-06-22 08:16:13,878 INFO L168 Benchmark]: Toolchain (without parser) took 2725.08 ms. Allocated memory was 649.6 MB in the beginning and 746.6 MB in the end (delta: 97.0 MB). Free memory was 564.2 MB in the beginning and 699.7 MB in the end (delta: -135.5 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:16:13,880 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:16:13,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.17 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 564.2 MB in the beginning and 643.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 50.3 GB. [2020-06-22 08:16:13,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.87 ms. Allocated memory is still 681.1 MB. Free memory was 643.7 MB in the beginning and 641.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. [2020-06-22 08:16:13,882 INFO L168 Benchmark]: Boogie Preprocessor took 26.91 ms. Allocated memory is still 681.1 MB. Free memory was 641.5 MB in the beginning and 640.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. [2020-06-22 08:16:13,882 INFO L168 Benchmark]: RCFGBuilder took 353.54 ms. Allocated memory is still 681.1 MB. Free memory was 640.4 MB in the beginning and 615.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 50.3 GB. [2020-06-22 08:16:13,883 INFO L168 Benchmark]: BlockEncodingV2 took 179.76 ms. Allocated memory is still 681.1 MB. Free memory was 615.0 MB in the beginning and 599.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 50.3 GB. [2020-06-22 08:16:13,883 INFO L168 Benchmark]: TraceAbstraction took 1809.52 ms. Allocated memory was 681.1 MB in the beginning and 746.6 MB in the end (delta: 65.5 MB). Free memory was 598.8 MB in the beginning and 699.7 MB in the end (delta: -101.0 MB). There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:16:13,884 INFO L168 Benchmark]: BuchiAutomizer took 4.14 ms. Allocated memory is still 746.6 MB. Free memory is still 699.7 MB. There was no memory consumed. Max. memory is 50.3 GB. [2020-06-22 08:16:13,888 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 52 locations, 59 edges - StatisticsResult: Encoded RCFG 42 locations, 145 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 649.6 MB. Free memory is still 585.8 MB. There was no memory consumed. Max. memory is 50.3 GB. * CACSL2BoogieTranslator took 302.17 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 564.2 MB in the beginning and 643.7 MB in the end (delta: -79.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 50.3 GB. * Boogie Procedure Inliner took 43.87 ms. Allocated memory is still 681.1 MB. Free memory was 643.7 MB in the beginning and 641.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 50.3 GB. * Boogie Preprocessor took 26.91 ms. Allocated memory is still 681.1 MB. Free memory was 641.5 MB in the beginning and 640.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 50.3 GB. * RCFGBuilder took 353.54 ms. Allocated memory is still 681.1 MB. Free memory was 640.4 MB in the beginning and 615.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 50.3 GB. * BlockEncodingV2 took 179.76 ms. Allocated memory is still 681.1 MB. Free memory was 615.0 MB in the beginning and 599.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 50.3 GB. * TraceAbstraction took 1809.52 ms. Allocated memory was 681.1 MB in the beginning and 746.6 MB in the end (delta: 65.5 MB). Free memory was 598.8 MB in the beginning and 699.7 MB in the end (delta: -101.0 MB). There was no memory consumed. Max. memory is 50.3 GB. * BuchiAutomizer took 4.14 ms. Allocated memory is still 746.6 MB. Free memory is still 699.7 MB. There was no memory consumed. Max. memory is 50.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int i, j, tmp; [L6] int length = __VERIFIER_nondet_int(); [L7] COND TRUE length < 1 [L7] length = 1 [L9] COND FALSE !(length % 2 == 0) [L10] int *arr = alloca(length*sizeof(int)); [L12] i=0 [L12] COND TRUE i