java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/array_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:38:39,326 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:38:39,329 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:38:39,344 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:38:39,345 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:38:39,346 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:38:39,347 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:38:39,349 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:38:39,350 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:38:39,351 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:38:39,352 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:38:39,352 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:38:39,353 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:38:39,354 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:38:39,355 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:38:39,356 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:38:39,357 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:38:39,359 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:38:39,360 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:38:39,362 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:38:39,363 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:38:39,364 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:38:39,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:38:39,366 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:38:39,367 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:38:39,367 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:38:39,368 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:38:39,369 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:38:39,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:38:39,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:38:39,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:38:39,372 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 22:38:39,374 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:38:39,400 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:38:39,401 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:38:39,402 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:38:39,402 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:38:39,402 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:38:39,404 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:38:39,404 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:38:39,404 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:38:39,404 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:38:39,404 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:38:39,404 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:38:39,405 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:38:39,405 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:38:39,405 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:38:39,405 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:38:39,405 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:38:39,407 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:38:39,407 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:38:39,407 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:38:39,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:38:39,408 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:38:39,408 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:38:39,408 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:38:39,408 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:38:39,408 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:38:39,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:38:39,409 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:38:39,409 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:38:39,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:38:39,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:38:39,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:38:39,483 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:38:39,483 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:38:39,484 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array_true-unreach-call_true-termination.i [2018-11-06 22:38:39,549 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd13df08/e8ef6ee807004e5e90d583109d9ddf18/FLAG83c7166a1 [2018-11-06 22:38:39,973 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:38:39,974 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array_true-unreach-call_true-termination.i [2018-11-06 22:38:39,979 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd13df08/e8ef6ee807004e5e90d583109d9ddf18/FLAG83c7166a1 [2018-11-06 22:38:39,992 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fd13df08/e8ef6ee807004e5e90d583109d9ddf18 [2018-11-06 22:38:40,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:38:40,004 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:38:40,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:38:40,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:38:40,009 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:38:40,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:38:39" (1/1) ... [2018-11-06 22:38:40,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@136eb70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40, skipping insertion in model container [2018-11-06 22:38:40,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:38:39" (1/1) ... [2018-11-06 22:38:40,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:38:40,044 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:38:40,287 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:38:40,292 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:38:40,319 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:38:40,344 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:38:40,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40 WrapperNode [2018-11-06 22:38:40,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:38:40,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:38:40,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:38:40,347 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:38:40,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... [2018-11-06 22:38:40,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... [2018-11-06 22:38:40,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:38:40,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:38:40,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:38:40,386 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:38:40,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... [2018-11-06 22:38:40,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... [2018-11-06 22:38:40,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... [2018-11-06 22:38:40,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... [2018-11-06 22:38:40,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... [2018-11-06 22:38:40,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... [2018-11-06 22:38:40,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... [2018-11-06 22:38:40,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:38:40,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:38:40,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:38:40,410 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:38:40,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 22:38:40,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-06 22:38:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-06 22:38:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:38:40,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:38:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-06 22:38:40,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-06 22:38:40,895 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:38:40,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:40 BoogieIcfgContainer [2018-11-06 22:38:40,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:38:40,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:38:40,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:38:40,900 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:38:40,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:38:39" (1/3) ... [2018-11-06 22:38:40,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c87045b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:40, skipping insertion in model container [2018-11-06 22:38:40,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:38:40" (2/3) ... [2018-11-06 22:38:40,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c87045b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:38:40, skipping insertion in model container [2018-11-06 22:38:40,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:38:40" (3/3) ... [2018-11-06 22:38:40,903 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call_true-termination.i [2018-11-06 22:38:40,911 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:38:40,919 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:38:40,936 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:38:40,967 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:38:40,968 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:38:40,968 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:38:40,968 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:38:40,968 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:38:40,969 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:38:40,969 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:38:40,969 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:38:40,969 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:38:40,983 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-06 22:38:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-06 22:38:40,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:38:40,990 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:38:40,992 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:38:40,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:38:40,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1796996410, now seen corresponding path program 1 times [2018-11-06 22:38:41,000 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:38:41,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:38:41,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:41,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:38:41,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:41,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:38:41,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:38:41,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:38:41,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:38:41,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:38:41,153 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-11-06 22:38:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:38:41,170 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-06 22:38:41,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:38:41,172 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-06 22:38:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:38:41,182 INFO L225 Difference]: With dead ends: 35 [2018-11-06 22:38:41,182 INFO L226 Difference]: Without dead ends: 18 [2018-11-06 22:38:41,186 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:38:41,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-06 22:38:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-06 22:38:41,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-06 22:38:41,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-06 22:38:41,221 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 9 [2018-11-06 22:38:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:38:41,221 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-06 22:38:41,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:38:41,221 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-06 22:38:41,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-06 22:38:41,222 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:38:41,222 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:38:41,223 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:38:41,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:38:41,223 INFO L82 PathProgramCache]: Analyzing trace with hash -688296086, now seen corresponding path program 1 times [2018-11-06 22:38:41,223 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:38:41,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:38:41,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:41,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:38:41,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:41,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:38:41,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 22:38:41,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:38:41,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:38:41,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:38:41,562 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2018-11-06 22:38:41,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:38:41,712 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-11-06 22:38:41,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:38:41,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-06 22:38:41,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:38:41,714 INFO L225 Difference]: With dead ends: 32 [2018-11-06 22:38:41,714 INFO L226 Difference]: Without dead ends: 27 [2018-11-06 22:38:41,715 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:38:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-06 22:38:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2018-11-06 22:38:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-06 22:38:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-06 22:38:41,720 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2018-11-06 22:38:41,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:38:41,721 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-06 22:38:41,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:38:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-06 22:38:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-06 22:38:41,722 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:38:41,722 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:38:41,722 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:38:41,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:38:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1006186702, now seen corresponding path program 1 times [2018-11-06 22:38:41,723 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:38:41,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:38:41,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:41,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:38:41,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:42,409 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 19 [2018-11-06 22:38:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:42,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:38:42,595 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 22:38:42,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:38:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:42,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:38:42,750 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2018-11-06 22:38:42,753 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-11-06 22:38:42,754 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-06 22:38:42,777 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-06 22:38:42,788 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-06 22:38:42,788 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:3 [2018-11-06 22:38:42,829 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-06 22:38:42,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-06 22:38:42,833 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-06 22:38:42,856 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-06 22:38:42,867 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-06 22:38:42,868 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-06 22:38:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:42,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:38:42,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2018-11-06 22:38:42,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 22:38:42,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 22:38:42,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-06 22:38:42,938 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 13 states. [2018-11-06 22:38:43,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:38:43,470 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-11-06 22:38:43,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 22:38:43,471 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2018-11-06 22:38:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:38:43,472 INFO L225 Difference]: With dead ends: 36 [2018-11-06 22:38:43,473 INFO L226 Difference]: Without dead ends: 31 [2018-11-06 22:38:43,474 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-11-06 22:38:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-06 22:38:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-11-06 22:38:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-06 22:38:43,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-06 22:38:43,479 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 17 [2018-11-06 22:38:43,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:38:43,479 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-06 22:38:43,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 22:38:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-06 22:38:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-06 22:38:43,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:38:43,482 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:38:43,482 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:38:43,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:38:43,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1914136305, now seen corresponding path program 1 times [2018-11-06 22:38:43,483 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:38:43,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:38:43,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:43,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:38:43,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:44,317 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2018-11-06 22:38:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:44,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:38:44,388 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:38:44,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:38:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:44,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:38:44,473 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2018-11-06 22:38:44,476 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2018-11-06 22:38:44,477 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-06 22:38:44,485 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-06 22:38:44,491 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-06 22:38:44,492 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:5 [2018-11-06 22:38:44,696 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-06 22:38:44,701 INFO L682 Elim1Store]: detected equality via solver [2018-11-06 22:38:44,702 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-11-06 22:38:44,703 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-06 22:38:44,719 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-06 22:38:44,727 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-06 22:38:44,727 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:26, output treesize:3 [2018-11-06 22:38:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:44,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:38:44,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2018-11-06 22:38:44,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-06 22:38:44,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-06 22:38:44,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-06 22:38:44,781 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 14 states. [2018-11-06 22:38:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:38:45,433 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-11-06 22:38:45,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 22:38:45,433 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2018-11-06 22:38:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:38:45,434 INFO L225 Difference]: With dead ends: 39 [2018-11-06 22:38:45,434 INFO L226 Difference]: Without dead ends: 34 [2018-11-06 22:38:45,435 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2018-11-06 22:38:45,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-06 22:38:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2018-11-06 22:38:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-06 22:38:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-06 22:38:45,440 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2018-11-06 22:38:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:38:45,441 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-06 22:38:45,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-06 22:38:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-06 22:38:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-06 22:38:45,442 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:38:45,442 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:38:45,442 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:38:45,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:38:45,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1625544426, now seen corresponding path program 2 times [2018-11-06 22:38:45,443 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:38:45,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:38:45,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:45,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:38:45,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:38:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:38:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:45,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:38:45,577 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:38:45,588 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:38:45,601 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:38:45,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:38:45,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:38:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:38:45,714 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:38:45,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2018-11-06 22:38:45,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 22:38:45,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 22:38:45,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:38:45,715 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-11-06 22:38:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:38:45,747 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-11-06 22:38:45,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:38:45,749 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-11-06 22:38:45,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:38:45,750 INFO L225 Difference]: With dead ends: 32 [2018-11-06 22:38:45,750 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 22:38:45,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:38:45,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 22:38:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 22:38:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 22:38:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 22:38:45,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-11-06 22:38:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:38:45,752 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 22:38:45,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 22:38:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 22:38:45,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 22:38:45,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 22:38:45,847 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-06 22:38:45,848 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-06 22:38:45,848 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-06 22:38:45,848 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 24) no Hoare annotation was computed. [2018-11-06 22:38:45,848 INFO L425 ceAbstractionStarter]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2018-11-06 22:38:45,848 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-06 22:38:45,849 INFO L421 ceAbstractionStarter]: At program point L19-4(lines 19 24) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~#array~0.offset| 0)) (.cse1 (<= ULTIMATE.start_main_~SIZE~0 1)) (.cse2 (<= 1 ULTIMATE.start_main_~SIZE~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~j~0 0)) (and .cse0 (<= ULTIMATE.start_main_~menor~0 (select (select |#memory_int| |ULTIMATE.start_main_~#array~0.base|) |ULTIMATE.start_main_~#array~0.offset|)) .cse1 (= ULTIMATE.start_main_~j~0 1) .cse2))) [2018-11-06 22:38:45,849 INFO L425 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-11-06 22:38:45,849 INFO L425 ceAbstractionStarter]: For program point L19-5(lines 19 24) no Hoare annotation was computed. [2018-11-06 22:38:45,849 INFO L425 ceAbstractionStarter]: For program point L15-2(line 15) no Hoare annotation was computed. [2018-11-06 22:38:45,850 INFO L425 ceAbstractionStarter]: For program point L15-3(line 15) no Hoare annotation was computed. [2018-11-06 22:38:45,850 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-06 22:38:45,850 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-11-06 22:38:45,850 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-11-06 22:38:45,850 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-06 22:38:45,850 INFO L428 ceAbstractionStarter]: At program point L28(lines 11 29) the Hoare annotation is: true [2018-11-06 22:38:45,850 INFO L425 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-06 22:38:45,851 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-06 22:38:45,851 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 23) no Hoare annotation was computed. [2018-11-06 22:38:45,851 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-06 22:38:45,851 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-06 22:38:45,851 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-06 22:38:45,852 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-06 22:38:45,852 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-11-06 22:38:45,859 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-06 22:38:45,865 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-06 22:38:45,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:38:45 BoogieIcfgContainer [2018-11-06 22:38:45,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:38:45,869 INFO L168 Benchmark]: Toolchain (without parser) took 5865.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -509.4 MB). Peak memory consumption was 237.7 MB. Max. memory is 7.1 GB. [2018-11-06 22:38:45,871 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-06 22:38:45,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-06 22:38:45,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.38 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. [2018-11-06 22:38:45,874 INFO L168 Benchmark]: Boogie Preprocessor took 23.39 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. [2018-11-06 22:38:45,875 INFO L168 Benchmark]: RCFGBuilder took 486.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -783.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2018-11-06 22:38:45,876 INFO L168 Benchmark]: TraceAbstraction took 4971.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 263.6 MB). Peak memory consumption was 263.6 MB. Max. memory is 7.1 GB. [2018-11-06 22:38:45,881 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 340.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.38 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. * Boogie Preprocessor took 23.39 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. * RCFGBuilder took 486.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -783.6 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4971.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 263.6 MB). Peak memory consumption was 263.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2018-11-06 22:38:45,889 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-06 22:38:45,890 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((array == 0 && SIZE <= 1) && 1 <= SIZE) && j == 0) || ((((array == 0 && menor <= unknown-#memory_int-unknown[array][array]) && SIZE <= 1) && j == 1) && 1 <= SIZE) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. SAFE Result, 4.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 138 SDslu, 135 SDs, 0 SdLazy, 256 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 36 HoareAnnotationTreeSize, 3 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 131 ConstructedInterpolants, 5 QuantifiedInterpolants, 16557 SizeOfPredicates, 21 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 18/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...