java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label54_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:37:58,144 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:37:58,146 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:37:58,166 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:37:58,167 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:37:58,170 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:37:58,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:37:58,176 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:37:58,181 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:37:58,182 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:37:58,186 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:37:58,186 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:37:58,187 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:37:58,191 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:37:58,192 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:37:58,193 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:37:58,194 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:37:58,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:37:58,198 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:37:58,200 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:37:58,201 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:37:58,202 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:37:58,205 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 19:37:58,205 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 19:37:58,205 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 19:37:58,208 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 19:37:58,209 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 19:37:58,209 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 19:37:58,213 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 19:37:58,214 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 19:37:58,215 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 19:37:58,215 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 19:37:58,219 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:37:58,248 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:37:58,248 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:37:58,249 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:37:58,250 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:37:58,251 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:37:58,251 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:37:58,251 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:37:58,251 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:37:58,252 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:37:58,252 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:37:58,252 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:37:58,252 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:37:58,252 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:37:58,252 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:37:58,254 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:37:58,254 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:37:58,254 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:37:58,255 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:37:58,255 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:37:58,255 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:37:58,255 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:37:58,255 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:37:58,256 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:37:58,256 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:37:58,256 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:37:58,256 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:37:58,256 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:37:58,257 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:37:58,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:37:58,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:37:58,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:37:58,319 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:37:58,319 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:37:58,320 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label54_false-unreach-call.c [2018-10-26 19:37:58,384 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4c4e9528a/f4600abb6afc47a184ab5759df3966f5/FLAG8b01ee906 [2018-10-26 19:37:59,115 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:37:59,116 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label54_false-unreach-call.c [2018-10-26 19:37:59,145 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4c4e9528a/f4600abb6afc47a184ab5759df3966f5/FLAG8b01ee906 [2018-10-26 19:37:59,162 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4c4e9528a/f4600abb6afc47a184ab5759df3966f5 [2018-10-26 19:37:59,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:37:59,175 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:37:59,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:37:59,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:37:59,181 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:37:59,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:37:59" (1/1) ... [2018-10-26 19:37:59,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32872df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:37:59, skipping insertion in model container [2018-10-26 19:37:59,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:37:59" (1/1) ... [2018-10-26 19:37:59,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:37:59,301 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:38:00,366 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:38:00,371 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:38:00,762 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:38:00,787 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:38:00,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00 WrapperNode [2018-10-26 19:38:00,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:38:00,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:38:00,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:38:00,790 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:38:00,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... [2018-10-26 19:38:00,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... [2018-10-26 19:38:01,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:38:01,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:38:01,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:38:01,385 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:38:01,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... [2018-10-26 19:38:01,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... [2018-10-26 19:38:01,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... [2018-10-26 19:38:01,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... [2018-10-26 19:38:01,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... [2018-10-26 19:38:01,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... [2018-10-26 19:38:01,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... [2018-10-26 19:38:01,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:38:01,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:38:01,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:38:01,639 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:38:01,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:38:01,710 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:38:01,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:38:01,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:38:10,943 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:38:10,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:38:10 BoogieIcfgContainer [2018-10-26 19:38:10,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:38:10,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:38:10,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:38:10,950 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:38:10,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:37:59" (1/3) ... [2018-10-26 19:38:10,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eda65cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:38:10, skipping insertion in model container [2018-10-26 19:38:10,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:00" (2/3) ... [2018-10-26 19:38:10,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eda65cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:38:10, skipping insertion in model container [2018-10-26 19:38:10,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:38:10" (3/3) ... [2018-10-26 19:38:10,956 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label54_false-unreach-call.c [2018-10-26 19:38:10,966 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:38:10,981 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:38:10,999 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:38:11,052 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:38:11,053 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:38:11,053 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:38:11,053 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:38:11,053 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:38:11,053 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:38:11,053 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:38:11,054 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:38:11,054 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:38:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 19:38:11,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 19:38:11,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:38:11,101 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:38:11,104 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:38:11,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:38:11,111 INFO L82 PathProgramCache]: Analyzing trace with hash 340357962, now seen corresponding path program 1 times [2018-10-26 19:38:11,113 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:38:11,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:38:11,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:11,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:11,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:38:11,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:38:11,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:38:11,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:38:11,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:38:11,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:38:11,518 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 19:38:21,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:38:21,299 INFO L93 Difference]: Finished difference Result 2097 states and 3909 transitions. [2018-10-26 19:38:21,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:38:21,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-26 19:38:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:38:21,339 INFO L225 Difference]: With dead ends: 2097 [2018-10-26 19:38:21,339 INFO L226 Difference]: Without dead ends: 1499 [2018-10-26 19:38:21,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:38:21,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2018-10-26 19:38:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1485. [2018-10-26 19:38:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-26 19:38:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2304 transitions. [2018-10-26 19:38:21,471 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2304 transitions. Word has length 14 [2018-10-26 19:38:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:38:21,471 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2304 transitions. [2018-10-26 19:38:21,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:38:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2304 transitions. [2018-10-26 19:38:21,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-26 19:38:21,475 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:38:21,476 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:38:21,476 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:38:21,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:38:21,477 INFO L82 PathProgramCache]: Analyzing trace with hash -843989150, now seen corresponding path program 1 times [2018-10-26 19:38:21,477 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:38:21,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:38:21,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:21,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:21,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:38:21,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:38:21,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:38:21,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:38:21,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:38:21,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:38:21,790 INFO L87 Difference]: Start difference. First operand 1485 states and 2304 transitions. Second operand 4 states. [2018-10-26 19:38:29,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:38:29,813 INFO L93 Difference]: Finished difference Result 4257 states and 6664 transitions. [2018-10-26 19:38:29,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:38:29,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2018-10-26 19:38:29,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:38:29,829 INFO L225 Difference]: With dead ends: 4257 [2018-10-26 19:38:29,829 INFO L226 Difference]: Without dead ends: 2774 [2018-10-26 19:38:29,832 INFO L605 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 [2018-10-26 19:38:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2018-10-26 19:38:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774. [2018-10-26 19:38:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2018-10-26 19:38:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3714 transitions. [2018-10-26 19:38:29,905 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3714 transitions. Word has length 82 [2018-10-26 19:38:29,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:38:29,907 INFO L481 AbstractCegarLoop]: Abstraction has 2774 states and 3714 transitions. [2018-10-26 19:38:29,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:38:29,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3714 transitions. [2018-10-26 19:38:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-26 19:38:29,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:38:29,911 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:38:29,911 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:38:29,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:38:29,915 INFO L82 PathProgramCache]: Analyzing trace with hash 910712919, now seen corresponding path program 1 times [2018-10-26 19:38:29,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:38:29,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:38:29,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:29,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:29,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:38:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:38:30,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:38:30,172 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:38:30,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:38:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:38:30,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:38:46,880 WARN L179 SmtUtils]: Spent 16.33 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-26 19:38:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:38:47,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:38:47,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:38:47,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:38:47,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:38:47,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:38:47,084 INFO L87 Difference]: Start difference. First operand 2774 states and 3714 transitions. Second operand 7 states. [2018-10-26 19:38:57,683 WARN L179 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-26 19:39:07,151 WARN L179 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-26 19:42:28,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 19:42:28,199 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:42:28,205 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:42:28,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:42:28 BoogieIcfgContainer [2018-10-26 19:42:28,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:42:28,207 INFO L168 Benchmark]: Toolchain (without parser) took 269033.40 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.3 MB). Peak memory consumption was 265.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:42:28,208 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:42:28,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1611.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:42:28,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 596.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -891.7 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-26 19:42:28,211 INFO L168 Benchmark]: Boogie Preprocessor took 253.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:42:28,211 INFO L168 Benchmark]: RCFGBuilder took 9304.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 486.9 MB). Peak memory consumption was 486.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:42:28,212 INFO L168 Benchmark]: TraceAbstraction took 257259.36 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 310.4 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -568.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:42:28,217 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1611.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 596.23 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -891.7 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 253.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9304.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 486.9 MB). Peak memory consumption was 486.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257259.36 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 310.4 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -568.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 47). Cancelled while BasicCegarLoop was constructing difference of abstraction (2774states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (7184 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 257.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 239.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1163 SDtfs, 4664 SDslu, 746 SDs, 0 SdLazy, 7848 SolverSat, 2559 SolverUnsat, 93 SolverUnknown, 0 SolverNotchecked, 219.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2774occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 262 ConstructedInterpolants, 12 QuantifiedInterpolants, 242314 SizeOfPredicates, 1 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 22/33 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown