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_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:49:12,325 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:49:12,327 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:49:12,339 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:49:12,340 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:49:12,341 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:49:12,342 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:49:12,344 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:49:12,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:49:12,346 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:49:12,347 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:49:12,347 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:49:12,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:49:12,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:49:12,350 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:49:12,351 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:49:12,352 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:49:12,354 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:49:12,356 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:49:12,358 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:49:12,359 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:49:12,360 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:49:12,362 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:49:12,363 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:49:12,363 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:49:12,364 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:49:12,365 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:49:12,366 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:49:12,366 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:49:12,368 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:49:12,368 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:49:12,369 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:49:12,369 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:49:12,369 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:49:12,372 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:49:12,373 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:49:12,373 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 21:49:12,404 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:49:12,404 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:49:12,405 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:49:12,406 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:49:12,406 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:49:12,407 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:49:12,407 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:49:12,407 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:49:12,407 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:49:12,407 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:49:12,408 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:49:12,408 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:49:12,408 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:49:12,408 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:49:12,408 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:49:12,409 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:49:12,410 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:49:12,410 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:49:12,410 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:49:12,410 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:49:12,411 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:49:12,411 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:49:12,411 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:49:12,411 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:49:12,411 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:49:12,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:49:12,412 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:49:12,412 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:49:12,484 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:49:12,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:49:12,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:49:12,503 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:49:12,503 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:49:12,504 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label12_true-unreach-call.c [2018-10-26 21:49:12,560 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9934e470d/32a6bf9e3fa4443dae15bab5c8af0f02/FLAG4911e17c9 [2018-10-26 21:49:13,261 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:49:13,262 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label12_true-unreach-call.c [2018-10-26 21:49:13,284 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9934e470d/32a6bf9e3fa4443dae15bab5c8af0f02/FLAG4911e17c9 [2018-10-26 21:49:13,300 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9934e470d/32a6bf9e3fa4443dae15bab5c8af0f02 [2018-10-26 21:49:13,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:49:13,314 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:49:13,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:49:13,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:49:13,319 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:49:13,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:49:13" (1/1) ... [2018-10-26 21:49:13,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c60178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:13, skipping insertion in model container [2018-10-26 21:49:13,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:49:13" (1/1) ... [2018-10-26 21:49:13,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:49:13,467 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:49:14,438 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:49:14,442 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:49:14,859 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:49:14,882 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:49:14,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14 WrapperNode [2018-10-26 21:49:14,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:49:14,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:49:14,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:49:14,884 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:49:14,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (1/1) ... [2018-10-26 21:49:14,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (1/1) ... [2018-10-26 21:49:15,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:49:15,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:49:15,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:49:15,395 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:49:15,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (1/1) ... [2018-10-26 21:49:15,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (1/1) ... [2018-10-26 21:49:15,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (1/1) ... [2018-10-26 21:49:15,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (1/1) ... [2018-10-26 21:49:15,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (1/1) ... [2018-10-26 21:49:15,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (1/1) ... [2018-10-26 21:49:15,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (1/1) ... [2018-10-26 21:49:15,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:49:15,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:49:15,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:49:15,687 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:49:15,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (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 21:49:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:49:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:49:15,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:49:27,009 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:49:27,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:49:27 BoogieIcfgContainer [2018-10-26 21:49:27,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:49:27,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:49:27,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:49:27,021 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:49:27,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:49:13" (1/3) ... [2018-10-26 21:49:27,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3550fb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:49:27, skipping insertion in model container [2018-10-26 21:49:27,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:49:14" (2/3) ... [2018-10-26 21:49:27,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3550fb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:49:27, skipping insertion in model container [2018-10-26 21:49:27,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:49:27" (3/3) ... [2018-10-26 21:49:27,027 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label12_true-unreach-call.c [2018-10-26 21:49:27,039 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:49:27,050 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:49:27,066 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:49:27,109 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:49:27,110 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:49:27,110 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:49:27,110 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:49:27,110 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:49:27,110 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:49:27,110 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:49:27,111 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:49:27,111 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:49:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 21:49:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 21:49:27,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:49:27,160 INFO L375 BasicCegarLoop]: trace histogram [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 21:49:27,163 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:49:27,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:49:27,169 INFO L82 PathProgramCache]: Analyzing trace with hash 646480794, now seen corresponding path program 1 times [2018-10-26 21:49:27,171 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:49:27,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:49:27,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:49:27,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:49:27,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:49:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:49:27,586 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 21:49:27,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:49:27,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:49:27,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:49:27,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:49:27,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:49:27,613 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 21:49:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:49:38,300 INFO L93 Difference]: Finished difference Result 2099 states and 3904 transitions. [2018-10-26 21:49:38,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:49:38,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-26 21:49:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:49:38,338 INFO L225 Difference]: With dead ends: 2099 [2018-10-26 21:49:38,338 INFO L226 Difference]: Without dead ends: 1501 [2018-10-26 21:49:38,345 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 21:49:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2018-10-26 21:49:38,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1499. [2018-10-26 21:49:38,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2018-10-26 21:49:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2373 transitions. [2018-10-26 21:49:38,482 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2373 transitions. Word has length 34 [2018-10-26 21:49:38,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:49:38,484 INFO L481 AbstractCegarLoop]: Abstraction has 1499 states and 2373 transitions. [2018-10-26 21:49:38,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:49:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2373 transitions. [2018-10-26 21:49:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-26 21:49:38,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:49:38,492 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:49:38,493 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:49:38,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:49:38,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1952848231, now seen corresponding path program 1 times [2018-10-26 21:49:38,495 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:49:38,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:49:38,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:49:38,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:49:38,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:49:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:49:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:49:38,959 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:49:38,959 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 21:49:38,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:49:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:49:39,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:49:55,671 WARN L179 SmtUtils]: Spent 16.35 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-26 21:49:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:49:56,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:49:56,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 21:49:56,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:49:56,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:49:56,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:49:56,116 INFO L87 Difference]: Start difference. First operand 1499 states and 2373 transitions. Second operand 7 states. [2018-10-26 21:50:05,035 WARN L179 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-26 21:50:29,202 WARN L179 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-26 21:53:44,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 21:53:44,550 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:53:44,556 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:53:44,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:53:44 BoogieIcfgContainer [2018-10-26 21:53:44,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:53:44,558 INFO L168 Benchmark]: Toolchain (without parser) took 271245.55 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -626.9 MB). Peak memory consumption was 519.7 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:44,559 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:53:44,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1568.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:44,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 510.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -922.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:44,562 INFO L168 Benchmark]: Boogie Preprocessor took 291.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:44,563 INFO L168 Benchmark]: RCFGBuilder took 11323.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 491.2 MB). Peak memory consumption was 491.2 MB. Max. memory is 7.1 GB. [2018-10-26 21:53:44,564 INFO L168 Benchmark]: TraceAbstraction took 257545.82 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 347.6 MB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -360.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:53:44,569 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1568.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 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 510.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -922.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 291.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11323.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 491.2 MB). Peak memory consumption was 491.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257545.82 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 347.6 MB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -360.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 107). Cancelled while BasicCegarLoop was constructing difference of abstraction (1499states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (7473 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 257.4s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 239.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 896 SDtfs, 3944 SDslu, 725 SDs, 0 SdLazy, 10153 SolverSat, 1973 SolverUnsat, 91 SolverUnknown, 0 SolverNotchecked, 219.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 33.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1499occurred in iteration=1, 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, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 241 ConstructedInterpolants, 32 QuantifiedInterpolants, 653963 SizeOfPredicates, 1 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 31/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown