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/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:51:49,950 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:51:49,952 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:51:49,964 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:51:49,965 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:51:49,966 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:51:49,967 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:51:49,969 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:51:49,970 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:51:49,971 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:51:49,972 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:51:49,973 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:51:49,974 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:51:49,975 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:51:49,976 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:51:49,980 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:51:49,980 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:51:49,986 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:51:49,988 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:51:49,993 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:51:49,994 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:51:49,995 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:51:49,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:51:50,001 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:51:50,002 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:51:50,002 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:51:50,003 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:51:50,006 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:51:50,007 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:51:50,008 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:51:50,008 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:51:50,009 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 22:51:50,009 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 22:51:50,009 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 22:51:50,012 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 22:51:50,013 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 22:51:50,013 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 22:51:50,039 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:51:50,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:51:50,041 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:51:50,041 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:51:50,042 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:51:50,042 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:51:50,042 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:51:50,042 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:51:50,042 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:51:50,047 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:51:50,048 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:51:50,048 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:51:50,048 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:51:50,048 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:51:50,048 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:51:50,049 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:51:50,049 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:51:50,049 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:51:50,049 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:51:50,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:51:50,051 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:51:50,051 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:51:50,051 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:51:50,052 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:51:50,052 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:51:50,052 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:51:50,052 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:51:50,052 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:51:50,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:51:50,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:51:50,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:51:50,128 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:51:50,128 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:51:50,129 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-11-06 22:51:50,195 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9f36bc6/cb8c6ad8577e46efb004a4a1641d2366/FLAG1112884da [2018-11-06 22:51:50,591 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:51:50,592 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-11-06 22:51:50,600 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9f36bc6/cb8c6ad8577e46efb004a4a1641d2366/FLAG1112884da [2018-11-06 22:51:50,614 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9f36bc6/cb8c6ad8577e46efb004a4a1641d2366 [2018-11-06 22:51:50,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:51:50,624 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:51:50,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:51:50,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:51:50,629 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:51:50,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35712bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50, skipping insertion in model container [2018-11-06 22:51:50,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:51:50,666 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:51:50,876 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:51:50,881 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:51:50,900 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:51:50,918 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:51:50,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50 WrapperNode [2018-11-06 22:51:50,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:51:50,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:51:50,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:51:50,920 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:51:50,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:51:50,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:51:50,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:51:50,958 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:51:50,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (1/1) ... [2018-11-06 22:51:50,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:51:50,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:51:50,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:51:50,980 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:51:50,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (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 22:51:51,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:51:51,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:51:51,264 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:51:51,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:51 BoogieIcfgContainer [2018-11-06 22:51:51,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:51:51,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:51:51,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:51:51,269 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:51:51,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:51:50" (1/3) ... [2018-11-06 22:51:51,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e3b046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:51, skipping insertion in model container [2018-11-06 22:51:51,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:50" (2/3) ... [2018-11-06 22:51:51,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e3b046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:51, skipping insertion in model container [2018-11-06 22:51:51,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:51" (3/3) ... [2018-11-06 22:51:51,273 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_true-unreach-call_true-termination.c.i [2018-11-06 22:51:51,281 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:51:51,288 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:51:51,304 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:51:51,336 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:51:51,337 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:51:51,337 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:51:51,338 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:51:51,338 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:51:51,338 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:51:51,338 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:51:51,338 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:51:51,338 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:51:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-11-06 22:51:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-06 22:51:51,361 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:51,363 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-11-06 22:51:51,366 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:51,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:51,373 INFO L82 PathProgramCache]: Analyzing trace with hash 889783783, now seen corresponding path program 1 times [2018-11-06 22:51:51,375 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:51,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:51,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:51,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:51,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:51,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:51,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:51:51,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:51:51,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:51:51,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:51:51,512 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2018-11-06 22:51:51,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:51,530 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-06 22:51:51,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:51:51,532 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-11-06 22:51:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:51,542 INFO L225 Difference]: With dead ends: 20 [2018-11-06 22:51:51,543 INFO L226 Difference]: Without dead ends: 8 [2018-11-06 22:51:51,546 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 22:51:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-11-06 22:51:51,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-06 22:51:51,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-06 22:51:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-11-06 22:51:51,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-11-06 22:51:51,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:51,579 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-11-06 22:51:51,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:51:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-11-06 22:51:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-06 22:51:51,580 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:51,580 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:51,580 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:51,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:51,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1805923659, now seen corresponding path program 1 times [2018-11-06 22:51:51,581 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:51,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:51,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:51,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:51,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:51,624 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 22:51:51,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:51,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:51:51,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 22:51:51,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 22:51:51,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:51:51,628 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2018-11-06 22:51:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:51,696 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-06 22:51:51,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 22:51:51,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-06 22:51:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:51,697 INFO L225 Difference]: With dead ends: 14 [2018-11-06 22:51:51,697 INFO L226 Difference]: Without dead ends: 10 [2018-11-06 22:51:51,698 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:51:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-11-06 22:51:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-06 22:51:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-06 22:51:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-11-06 22:51:51,702 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-11-06 22:51:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:51,702 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-11-06 22:51:51,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 22:51:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-11-06 22:51:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-06 22:51:51,703 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:51,703 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:51,704 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:51,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:51,704 INFO L82 PathProgramCache]: Analyzing trace with hash 373599493, now seen corresponding path program 1 times [2018-11-06 22:51:51,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:51,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:51,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:51,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:51,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:51,847 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 22:51:51,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:51:51,847 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 22:51:51,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:51,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:51:52,154 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 22:51:52,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:51:52,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-06 22:51:52,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 22:51:52,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 22:51:52,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:51:52,187 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-11-06 22:51:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:52,315 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-06 22:51:52,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:51:52,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-11-06 22:51:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:52,317 INFO L225 Difference]: With dead ends: 16 [2018-11-06 22:51:52,317 INFO L226 Difference]: Without dead ends: 12 [2018-11-06 22:51:52,317 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:51:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-06 22:51:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-06 22:51:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-06 22:51:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-06 22:51:52,323 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-11-06 22:51:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:52,323 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-06 22:51:52,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 22:51:52,324 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-06 22:51:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-06 22:51:52,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:52,325 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:52,325 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:52,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:52,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1700389313, now seen corresponding path program 2 times [2018-11-06 22:51:52,326 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:52,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:52,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:52,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:52,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:52,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:51:52,421 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 22:51:52,433 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:51:52,471 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:51:52,472 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:51:52,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:51:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:52,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:51:52,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-06 22:51:52,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 22:51:52,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 22:51:52,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:51:52,683 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2018-11-06 22:51:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:52,716 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-06 22:51:52,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:51:52,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2018-11-06 22:51:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:52,720 INFO L225 Difference]: With dead ends: 18 [2018-11-06 22:51:52,720 INFO L226 Difference]: Without dead ends: 14 [2018-11-06 22:51:52,720 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:51:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-06 22:51:52,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-06 22:51:52,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-06 22:51:52,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-06 22:51:52,724 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-06 22:51:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:52,724 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-06 22:51:52,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 22:51:52,725 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-06 22:51:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-06 22:51:52,725 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:52,726 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:52,726 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:52,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:52,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1938806535, now seen corresponding path program 3 times [2018-11-06 22:51:52,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:52,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:52,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:52,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:51:52,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:52,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:51:52,990 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 22:51:53,004 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:51:53,017 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-06 22:51:53,018 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:51:53,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:51:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:53,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:51:53,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-06 22:51:53,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 22:51:53,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 22:51:53,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:51:53,142 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 10 states. [2018-11-06 22:51:53,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:53,180 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-06 22:51:53,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:51:53,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-11-06 22:51:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:53,183 INFO L225 Difference]: With dead ends: 20 [2018-11-06 22:51:53,184 INFO L226 Difference]: Without dead ends: 16 [2018-11-06 22:51:53,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:51:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-06 22:51:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-06 22:51:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-06 22:51:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-06 22:51:53,188 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-06 22:51:53,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:53,188 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-06 22:51:53,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 22:51:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-06 22:51:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-06 22:51:53,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:53,190 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:53,190 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:53,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:53,190 INFO L82 PathProgramCache]: Analyzing trace with hash 870477107, now seen corresponding path program 4 times [2018-11-06 22:51:53,190 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:53,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:53,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:53,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:51:53,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:53,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:51:53,450 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:51:53,459 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:51:53,482 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:51:53,482 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:51:53,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:51:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:53,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:51:53,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-06 22:51:53,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 22:51:53,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 22:51:53,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:51:53,571 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2018-11-06 22:51:53,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:53,703 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-06 22:51:53,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 22:51:53,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-06 22:51:53,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:53,705 INFO L225 Difference]: With dead ends: 22 [2018-11-06 22:51:53,705 INFO L226 Difference]: Without dead ends: 18 [2018-11-06 22:51:53,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:51:53,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-06 22:51:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-06 22:51:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-06 22:51:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-06 22:51:53,710 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-06 22:51:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:53,710 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-06 22:51:53,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 22:51:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-06 22:51:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-06 22:51:53,712 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:53,712 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:53,712 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:53,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:53,713 INFO L82 PathProgramCache]: Analyzing trace with hash -942372115, now seen corresponding path program 5 times [2018-11-06 22:51:53,713 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:53,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:53,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:53,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:51:53,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:54,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:54,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-06 22:51:54,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:51:54,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:51:54,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:51:54,109 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2018-11-06 22:51:54,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:54,145 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-06 22:51:54,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:51:54,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-11-06 22:51:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:54,146 INFO L225 Difference]: With dead ends: 18 [2018-11-06 22:51:54,146 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 22:51:54,147 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:51:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 22:51:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 22:51:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 22:51:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 22:51:54,148 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-11-06 22:51:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:54,148 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 22:51:54,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:51:54,149 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 22:51:54,149 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 22:51:54,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 22:51:54,324 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-11-06 22:51:54,328 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-06 22:51:54,329 INFO L428 ceAbstractionStarter]: At program point L19(lines 10 20) the Hoare annotation is: true [2018-11-06 22:51:54,329 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-06 22:51:54,329 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-06 22:51:54,329 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-11-06 22:51:54,329 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-11-06 22:51:54,329 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-06 22:51:54,329 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 17) no Hoare annotation was computed. [2018-11-06 22:51:54,330 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (or (and (< 5 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~j~0 3) ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 6)) (and (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 3)) (<= ULTIMATE.start_main_~i~0 5) (<= 8 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~i~0 1) (<= 10 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 9))) (and (<= 9 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 6)) (<= ULTIMATE.start_main_~i~0 3)) (and (<= 7 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 7))) [2018-11-06 22:51:54,330 INFO L425 ceAbstractionStarter]: For program point L14-4(lines 14 17) no Hoare annotation was computed. [2018-11-06 22:51:54,330 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-06 22:51:54,330 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-11-06 22:51:54,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:51:54 BoogieIcfgContainer [2018-11-06 22:51:54,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:51:54,347 INFO L168 Benchmark]: Toolchain (without parser) took 3723.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -616.2 MB). Peak memory consumption was 131.9 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:54,349 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 22:51:54,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.97 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:54,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.58 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 22:51:54,352 INFO L168 Benchmark]: Boogie Preprocessor took 21.79 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 22:51:54,352 INFO L168 Benchmark]: RCFGBuilder took 285.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -790.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:54,353 INFO L168 Benchmark]: TraceAbstraction took 3080.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 161.2 MB). Peak memory consumption was 161.2 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:54,361 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 293.97 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.58 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 21.79 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 285.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -790.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3080.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 161.2 MB). Peak memory consumption was 161.2 MB. Max. memory is 7.1 GB. * 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: 14]: Loop Invariant Derived loop invariant: (((((5 < j && j + 3 <= i) && j <= 6) || ((j <= i + 3 && i <= 5) && 8 <= j)) || ((i <= 1 && 10 <= j) && j <= i + 9)) || ((9 <= j && j <= i + 6) && i <= 3)) || ((7 <= j && j <= i) && i <= 7) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 1 SDslu, 100 SDs, 0 SdLazy, 101 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=6, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 61 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 5685 SizeOfPredicates, 9 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 30/110 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...