java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/nested_true-unreach-call1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 15:48:38,909 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 15:48:38,912 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 15:48:38,927 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 15:48:38,927 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 15:48:38,928 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 15:48:38,930 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 15:48:38,932 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 15:48:38,935 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 15:48:38,935 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 15:48:38,937 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 15:48:38,937 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 15:48:38,938 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 15:48:38,939 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 15:48:38,940 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 15:48:38,941 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 15:48:38,941 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 15:48:38,943 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 15:48:38,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 15:48:38,947 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 15:48:38,948 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 15:48:38,949 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 15:48:38,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 15:48:38,959 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 15:48:38,973 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 15:48:38,973 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 15:48:38,974 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 15:48:38,974 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 15:48:38,974 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 15:48:38,975 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 15:48:38,975 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 15:48:38,975 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 15:48:38,975 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 15:48:38,975 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 15:48:38,976 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 15:48:38,976 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 15:48:38,976 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 15:48:38,976 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 15:48:38,976 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 15:48:38,977 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 15:48:38,977 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 15:48:38,977 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 15:48:38,977 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 15:48:38,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 15:48:38,978 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 15:48:38,978 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 15:48:38,978 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 15:48:38,978 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 15:48:38,978 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 15:48:38,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 15:48:38,979 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 15:48:38,979 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 15:48:39,020 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 15:48:39,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 15:48:39,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 15:48:39,038 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 15:48:39,038 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 15:48:39,039 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-acceleration/nested_true-unreach-call1.i [2018-10-23 15:48:39,097 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68e26b297/b5c446d6c52e4f0890f3a87eb3db18ea/FLAG035d86749 [2018-10-23 15:48:39,520 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 15:48:39,521 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/nested_true-unreach-call1.i [2018-10-23 15:48:39,527 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68e26b297/b5c446d6c52e4f0890f3a87eb3db18ea/FLAG035d86749 [2018-10-23 15:48:39,549 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68e26b297/b5c446d6c52e4f0890f3a87eb3db18ea [2018-10-23 15:48:39,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 15:48:39,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 15:48:39,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 15:48:39,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 15:48:39,568 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 15:48:39,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e732098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39, skipping insertion in model container [2018-10-23 15:48:39,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 15:48:39,606 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 15:48:39,775 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:48:39,779 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 15:48:39,796 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:48:39,813 INFO L193 MainTranslator]: Completed translation [2018-10-23 15:48:39,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39 WrapperNode [2018-10-23 15:48:39,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 15:48:39,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 15:48:39,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 15:48:39,815 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 15:48:39,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 15:48:39,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 15:48:39,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 15:48:39,856 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 15:48:39,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... [2018-10-23 15:48:39,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 15:48:39,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 15:48:39,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 15:48:39,878 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 15:48:39,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 15:48:40,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 15:48:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 15:48:40,232 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 15:48:40,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:48:40 BoogieIcfgContainer [2018-10-23 15:48:40,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 15:48:40,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 15:48:40,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 15:48:40,238 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 15:48:40,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 03:48:39" (1/3) ... [2018-10-23 15:48:40,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6facbc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:48:40, skipping insertion in model container [2018-10-23 15:48:40,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:48:39" (2/3) ... [2018-10-23 15:48:40,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6facbc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:48:40, skipping insertion in model container [2018-10-23 15:48:40,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:48:40" (3/3) ... [2018-10-23 15:48:40,241 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call1.i [2018-10-23 15:48:40,251 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 15:48:40,259 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 15:48:40,276 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 15:48:40,308 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 15:48:40,309 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 15:48:40,309 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 15:48:40,309 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 15:48:40,309 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 15:48:40,309 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 15:48:40,310 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 15:48:40,310 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 15:48:40,310 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 15:48:40,325 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-10-23 15:48:40,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-23 15:48:40,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:48:40,333 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-23 15:48:40,335 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:48:40,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:48:40,341 INFO L82 PathProgramCache]: Analyzing trace with hash 890214759, now seen corresponding path program 1 times [2018-10-23 15:48:40,343 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:48:40,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:48:40,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:40,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:48:40,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:48:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:48:40,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:48:40,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 15:48:40,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-23 15:48:40,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-23 15:48:40,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-23 15:48:40,473 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2018-10-23 15:48:40,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:48:40,490 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2018-10-23 15:48:40,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 15:48:40,491 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-10-23 15:48:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:48:40,500 INFO L225 Difference]: With dead ends: 28 [2018-10-23 15:48:40,501 INFO L226 Difference]: Without dead ends: 11 [2018-10-23 15:48:40,504 INFO L605 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 [2018-10-23 15:48:40,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-23 15:48:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-23 15:48:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-23 15:48:40,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-23 15:48:40,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2018-10-23 15:48:40,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:48:40,546 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-23 15:48:40,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-23 15:48:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-23 15:48:40,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-23 15:48:40,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:48:40,548 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:48:40,549 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:48:40,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:48:40,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1805937561, now seen corresponding path program 1 times [2018-10-23 15:48:40,550 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:48:40,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:48:40,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:40,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:48:40,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:48:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:48:40,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:48:40,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 15:48:40,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 15:48:40,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 15:48:40,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 15:48:40,767 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2018-10-23 15:48:40,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:48:40,889 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-10-23 15:48:40,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 15:48:40,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-23 15:48:40,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:48:40,891 INFO L225 Difference]: With dead ends: 20 [2018-10-23 15:48:40,891 INFO L226 Difference]: Without dead ends: 16 [2018-10-23 15:48:40,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 15:48:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-23 15:48:40,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2018-10-23 15:48:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-23 15:48:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-23 15:48:40,899 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2018-10-23 15:48:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:48:40,899 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-23 15:48:40,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 15:48:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-23 15:48:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-23 15:48:40,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:48:40,901 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:48:40,901 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:48:40,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:48:40,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1845410961, now seen corresponding path program 1 times [2018-10-23 15:48:40,902 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:48:40,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:48:40,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:40,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:48:40,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:48:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:48:40,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:48:40,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 15:48:40,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 15:48:40,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 15:48:40,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 15:48:40,968 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2018-10-23 15:48:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:48:40,991 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2018-10-23 15:48:40,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 15:48:40,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-10-23 15:48:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:48:40,993 INFO L225 Difference]: With dead ends: 24 [2018-10-23 15:48:40,993 INFO L226 Difference]: Without dead ends: 15 [2018-10-23 15:48:40,994 INFO L605 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 [2018-10-23 15:48:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-23 15:48:40,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-23 15:48:40,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-23 15:48:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-10-23 15:48:40,999 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2018-10-23 15:48:40,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:48:40,999 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-10-23 15:48:41,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 15:48:41,000 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-10-23 15:48:41,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-23 15:48:41,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:48:41,001 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:48:41,001 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:48:41,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:48:41,002 INFO L82 PathProgramCache]: Analyzing trace with hash 788746549, now seen corresponding path program 1 times [2018-10-23 15:48:41,002 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:48:41,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:48:41,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:41,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:48:41,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:48:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:48:41,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:48:41,126 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:48:41,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:48:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:48:41,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:48:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:48:41,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:48:41,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2018-10-23 15:48:41,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 15:48:41,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 15:48:41,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 15:48:41,296 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 7 states. [2018-10-23 15:48:41,658 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-23 15:48:41,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:48:41,761 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-10-23 15:48:41,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 15:48:41,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-10-23 15:48:41,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:48:41,763 INFO L225 Difference]: With dead ends: 44 [2018-10-23 15:48:41,764 INFO L226 Difference]: Without dead ends: 33 [2018-10-23 15:48:41,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-23 15:48:41,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-23 15:48:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2018-10-23 15:48:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-23 15:48:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-10-23 15:48:41,775 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2018-10-23 15:48:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:48:41,775 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-10-23 15:48:41,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 15:48:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-10-23 15:48:41,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-23 15:48:41,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:48:41,778 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-23 15:48:41,778 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:48:41,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:48:41,779 INFO L82 PathProgramCache]: Analyzing trace with hash -812226087, now seen corresponding path program 2 times [2018-10-23 15:48:41,779 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:48:41,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:48:41,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:41,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:48:41,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:48:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-23 15:48:41,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:48:41,929 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 15:48:41,945 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 15:48:41,966 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 15:48:41,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 15:48:41,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:48:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-23 15:48:42,103 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:48:42,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-23 15:48:42,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 15:48:42,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 15:48:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-23 15:48:42,105 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 8 states. [2018-10-23 15:48:42,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:48:42,825 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2018-10-23 15:48:42,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 15:48:42,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-10-23 15:48:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:48:42,828 INFO L225 Difference]: With dead ends: 66 [2018-10-23 15:48:42,828 INFO L226 Difference]: Without dead ends: 50 [2018-10-23 15:48:42,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-10-23 15:48:42,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-23 15:48:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2018-10-23 15:48:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-23 15:48:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-10-23 15:48:42,839 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 25 [2018-10-23 15:48:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:48:42,839 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-10-23 15:48:42,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 15:48:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-10-23 15:48:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-23 15:48:42,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:48:42,841 INFO L375 BasicCegarLoop]: trace histogram [12, 9, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-23 15:48:42,841 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:48:42,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:48:42,842 INFO L82 PathProgramCache]: Analyzing trace with hash -264218303, now seen corresponding path program 3 times [2018-10-23 15:48:42,842 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:48:42,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:48:42,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:42,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 15:48:42,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:48:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:48:42,975 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-10-23 15:48:42,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:48:42,975 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 15:48:42,986 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-23 15:48:43,011 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-10-23 15:48:43,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 15:48:43,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:48:45,180 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_2 Int)) (let ((.cse0 (mod v_prenex_2 2))) (let ((.cse1 (mod v_prenex_2 4294967296)) (.cse2 (mod (+ .cse0 4294967294) 4294967296))) (and (not (= 0 .cse0)) (< .cse1 0) (< (mod (+ v_prenex_2 4294967295) 4294967296) 268435455) (<= 268435455 .cse1) (= .cse2 (+ c_ULTIMATE.start___VERIFIER_assert_~cond 4294967296)) (< 2147483647 .cse2))))) (exists ((v_prenex_5 Int)) (let ((.cse3 (mod v_prenex_5 2))) (and (<= .cse3 2147483647) (<= 268435455 (mod v_prenex_5 4294967296)) (= 0 .cse3) (= .cse3 c_ULTIMATE.start___VERIFIER_assert_~cond) (< (mod (+ v_prenex_5 4294967295) 4294967296) 268435455)))) (exists ((v_prenex_3 Int)) (let ((.cse5 (mod v_prenex_3 4294967296)) (.cse4 (mod v_prenex_3 2))) (and (= .cse4 (+ c_ULTIMATE.start___VERIFIER_assert_~cond 4294967296)) (<= 0 .cse5) (<= 268435455 .cse5) (< 2147483647 .cse4) (< (mod (+ v_prenex_3 4294967295) 4294967296) 268435455)))) (exists ((v_prenex_1 Int)) (let ((.cse6 (mod v_prenex_1 2))) (and (= 0 .cse6) (<= 268435455 (mod v_prenex_1 4294967296)) (< 2147483647 .cse6) (= .cse6 (+ c_ULTIMATE.start___VERIFIER_assert_~cond 4294967296)) (< (mod (+ v_prenex_1 4294967295) 4294967296) 268435455)))) (exists ((v_prenex_4 Int)) (let ((.cse8 (mod v_prenex_4 4294967296)) (.cse7 (mod v_prenex_4 2))) (and (= .cse7 c_ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 .cse8) (<= 268435455 .cse8) (< (mod (+ v_prenex_4 4294967295) 4294967296) 268435455) (<= .cse7 2147483647)))) (exists ((ULTIMATE.start_main_~x~0 Int)) (let ((.cse10 (mod ULTIMATE.start_main_~x~0 2))) (let ((.cse9 (mod ULTIMATE.start_main_~x~0 4294967296)) (.cse11 (mod (+ .cse10 4294967294) 4294967296))) (and (<= 268435455 .cse9) (< (mod (+ ULTIMATE.start_main_~x~0 4294967295) 4294967296) 268435455) (< .cse9 0) (not (= 0 .cse10)) (= .cse11 c_ULTIMATE.start___VERIFIER_assert_~cond) (<= .cse11 2147483647)))))) is different from true [2018-10-23 15:48:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-23 15:48:47,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 15:48:47,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-23 15:48:47,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 15:48:47,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 15:48:47,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=57, Unknown=1, NotChecked=14, Total=90 [2018-10-23 15:48:47,271 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 10 states. [2018-10-23 15:48:49,696 WARN L832 $PredicateComparison]: unable to prove that (and (<= 268435455 (mod c_ULTIMATE.start_main_~x~0 4294967296)) (or (exists ((v_prenex_2 Int)) (let ((.cse0 (mod v_prenex_2 2))) (let ((.cse1 (mod v_prenex_2 4294967296)) (.cse2 (mod (+ .cse0 4294967294) 4294967296))) (and (not (= 0 .cse0)) (< .cse1 0) (< (mod (+ v_prenex_2 4294967295) 4294967296) 268435455) (<= 268435455 .cse1) (= .cse2 (+ c_ULTIMATE.start___VERIFIER_assert_~cond 4294967296)) (< 2147483647 .cse2))))) (exists ((v_prenex_5 Int)) (let ((.cse3 (mod v_prenex_5 2))) (and (<= .cse3 2147483647) (<= 268435455 (mod v_prenex_5 4294967296)) (= 0 .cse3) (= .cse3 c_ULTIMATE.start___VERIFIER_assert_~cond) (< (mod (+ v_prenex_5 4294967295) 4294967296) 268435455)))) (exists ((v_prenex_3 Int)) (let ((.cse5 (mod v_prenex_3 4294967296)) (.cse4 (mod v_prenex_3 2))) (and (= .cse4 (+ c_ULTIMATE.start___VERIFIER_assert_~cond 4294967296)) (<= 0 .cse5) (<= 268435455 .cse5) (< 2147483647 .cse4) (< (mod (+ v_prenex_3 4294967295) 4294967296) 268435455)))) (exists ((v_prenex_1 Int)) (let ((.cse6 (mod v_prenex_1 2))) (and (= 0 .cse6) (<= 268435455 (mod v_prenex_1 4294967296)) (< 2147483647 .cse6) (= .cse6 (+ c_ULTIMATE.start___VERIFIER_assert_~cond 4294967296)) (< (mod (+ v_prenex_1 4294967295) 4294967296) 268435455)))) (exists ((v_prenex_4 Int)) (let ((.cse8 (mod v_prenex_4 4294967296)) (.cse7 (mod v_prenex_4 2))) (and (= .cse7 c_ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 .cse8) (<= 268435455 .cse8) (< (mod (+ v_prenex_4 4294967295) 4294967296) 268435455) (<= .cse7 2147483647)))) (exists ((ULTIMATE.start_main_~x~0 Int)) (let ((.cse10 (mod ULTIMATE.start_main_~x~0 2))) (let ((.cse9 (mod ULTIMATE.start_main_~x~0 4294967296)) (.cse11 (mod (+ .cse10 4294967294) 4294967296))) (and (<= 268435455 .cse9) (< (mod (+ ULTIMATE.start_main_~x~0 4294967295) 4294967296) 268435455) (< .cse9 0) (not (= 0 .cse10)) (= .cse11 c_ULTIMATE.start___VERIFIER_assert_~cond) (<= .cse11 2147483647)))))) (< (mod (+ c_ULTIMATE.start_main_~x~0 4294967295) 4294967296) 268435455)) is different from false [2018-10-23 15:48:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:48:49,699 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2018-10-23 15:48:49,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 15:48:49,700 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-10-23 15:48:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:48:49,700 INFO L225 Difference]: With dead ends: 74 [2018-10-23 15:48:49,700 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 15:48:49,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=68, Invalid=244, Unknown=2, NotChecked=66, Total=380 [2018-10-23 15:48:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 15:48:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 15:48:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 15:48:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 15:48:49,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-10-23 15:48:49,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:48:49,703 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 15:48:49,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 15:48:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 15:48:49,703 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 15:48:49,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 15:48:49,860 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-23 15:48:49,861 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-10-23 15:48:49,861 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2018-10-23 15:48:49,861 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 17) no Hoare annotation was computed. [2018-10-23 15:48:49,862 INFO L421 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: (or (= ULTIMATE.start_main_~x~0 0) (and (< (mod (+ ULTIMATE.start_main_~x~0 4294967295) 4294967296) 268435455) (< (mod ULTIMATE.start_main_~x~0 4294967296) 268435455))) [2018-10-23 15:48:49,862 INFO L425 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2018-10-23 15:48:49,862 INFO L421 ceAbstractionStarter]: At program point L11-3(lines 11 17) the Hoare annotation is: (or (< (mod (+ ULTIMATE.start_main_~x~0 4294967295) 4294967296) 268435455) (and (<= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~x~0))) [2018-10-23 15:48:49,862 INFO L425 ceAbstractionStarter]: For program point L11-4(lines 11 17) no Hoare annotation was computed. [2018-10-23 15:48:49,862 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-10-23 15:48:49,862 INFO L428 ceAbstractionStarter]: At program point L3-2(lines 2 7) the Hoare annotation is: true [2018-10-23 15:48:49,863 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-23 15:48:49,863 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-23 15:48:49,863 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-23 15:48:49,863 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 19) no Hoare annotation was computed. [2018-10-23 15:48:49,863 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-10-23 15:48:49,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 03:48:49 BoogieIcfgContainer [2018-10-23 15:48:49,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 15:48:49,880 INFO L168 Benchmark]: Toolchain (without parser) took 10318.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -593.8 MB). Peak memory consumption was 146.0 MB. Max. memory is 7.1 GB. [2018-10-23 15:48:49,881 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 15:48:49,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.65 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. [2018-10-23 15:48:49,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 15:48:49,887 INFO L168 Benchmark]: Boogie Preprocessor took 21.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 15:48:49,887 INFO L168 Benchmark]: RCFGBuilder took 355.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-23 15:48:49,888 INFO L168 Benchmark]: TraceAbstraction took 9644.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 185.1 MB). Peak memory consumption was 185.1 MB. Max. memory is 7.1 GB. [2018-10-23 15:48:49,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 250.65 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 41.59 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 21.30 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 355.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9644.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 185.1 MB). Peak memory consumption was 185.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 13]: Loop Invariant Derived loop invariant: x == 0 || ((x + 4294967295) % 4294967296 < 268435455 && x % 4294967296 < 268435455) - InvariantResult [Line: 2]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (x + 4294967295) % 4294967296 < 268435455 || ((x <= 0 && y == 0) && 0 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. SAFE Result, 9.5s OverallTime, 6 OverallIterations, 12 TraceHistogramMax, 3.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 33 SDslu, 190 SDs, 0 SdLazy, 256 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=5, 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, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 23 NumberOfFragments, 36 HoareAnnotationTreeSize, 3 FomulaSimplifications, 427 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 183 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 174 ConstructedInterpolants, 1 QuantifiedInterpolants, 19716 SizeOfPredicates, 6 NumberOfNonLiveVariables, 100 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 329/378 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...