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-new/half_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:00:03,926 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:00:03,931 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:00:03,946 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:00:03,946 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:00:03,947 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:00:03,948 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:00:03,950 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:00:03,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:00:03,952 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:00:03,953 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:00:03,953 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:00:03,954 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:00:03,958 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:00:03,959 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:00:03,959 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:00:03,960 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:00:03,962 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:00:03,964 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:00:03,966 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:00:03,967 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:00:03,968 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:00:03,971 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 12:00:03,979 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 [2018-10-24 12:00:03,994 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:00:03,994 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:00:03,995 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:00:03,995 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 12:00:03,996 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 12:00:03,996 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 12:00:03,996 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 12:00:03,997 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:00:03,997 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:00:03,997 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:00:03,997 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:00:03,997 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:00:03,998 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:00:03,998 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:00:03,998 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:00:03,998 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:00:03,998 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:00:03,999 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:00:03,999 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:00:03,999 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:00:03,999 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:00:03,999 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:00:04,000 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:00:04,000 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 12:00:04,000 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:00:04,000 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:00:04,000 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:00:04,001 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:00:04,054 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:00:04,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:00:04,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:00:04,088 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:00:04,089 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:00:04,090 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/half_true-unreach-call_true-termination.i [2018-10-24 12:00:04,156 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4c217dad4/77a09d9a8254416a85816da7d0102bf7/FLAGa86153691 [2018-10-24 12:00:04,608 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:00:04,608 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half_true-unreach-call_true-termination.i [2018-10-24 12:00:04,615 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4c217dad4/77a09d9a8254416a85816da7d0102bf7/FLAGa86153691 [2018-10-24 12:00:04,633 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4c217dad4/77a09d9a8254416a85816da7d0102bf7 [2018-10-24 12:00:04,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:00:04,644 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:00:04,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:00:04,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:00:04,649 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:00:04,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5009f73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04, skipping insertion in model container [2018-10-24 12:00:04,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:00:04,682 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:00:04,878 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:00:04,882 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:00:04,900 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:00:04,918 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:00:04,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04 WrapperNode [2018-10-24 12:00:04,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:00:04,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:00:04,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:00:04,920 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:00:04,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:00:04,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:00:04,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:00:04,963 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:00:04,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (1/1) ... [2018-10-24 12:00:04,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:00:04,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:00:04,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:00:04,986 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:00:04,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (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 [2018-10-24 12:00:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:00:05,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:00:05,334 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:00:05,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:00:05 BoogieIcfgContainer [2018-10-24 12:00:05,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:00:05,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:00:05,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:00:05,340 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:00:05,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:00:04" (1/3) ... [2018-10-24 12:00:05,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543bbb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:00:05, skipping insertion in model container [2018-10-24 12:00:05,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:00:04" (2/3) ... [2018-10-24 12:00:05,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543bbb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:00:05, skipping insertion in model container [2018-10-24 12:00:05,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:00:05" (3/3) ... [2018-10-24 12:00:05,343 INFO L112 eAbstractionObserver]: Analyzing ICFG half_true-unreach-call_true-termination.i [2018-10-24 12:00:05,354 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:00:05,362 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:00:05,398 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:00:05,443 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 12:00:05,451 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:00:05,451 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:00:05,451 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:00:05,451 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:00:05,452 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:00:05,452 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:00:05,452 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:00:05,452 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:00:05,488 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-10-24 12:00:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-24 12:00:05,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:05,503 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:05,505 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:05,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:05,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1807304968, now seen corresponding path program 1 times [2018-10-24 12:00:05,513 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:05,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:05,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:05,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:05,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:05,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:00:05,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:00:05,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:00:05,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:00:05,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:00:05,639 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2018-10-24 12:00:05,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:05,656 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2018-10-24 12:00:05,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:00:05,658 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2018-10-24 12:00:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:05,669 INFO L225 Difference]: With dead ends: 23 [2018-10-24 12:00:05,669 INFO L226 Difference]: Without dead ends: 11 [2018-10-24 12:00:05,672 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 [2018-10-24 12:00:05,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-24 12:00:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-24 12:00:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-24 12:00:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-24 12:00:05,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2018-10-24 12:00:05,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:05,705 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-24 12:00:05,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:00:05,705 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-24 12:00:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-24 12:00:05,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:05,706 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:05,706 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:05,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:05,707 INFO L82 PathProgramCache]: Analyzing trace with hash 178559670, now seen corresponding path program 1 times [2018-10-24 12:00:05,707 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:05,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:05,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:05,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:05,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:06,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:00:06,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 12:00:06,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 12:00:06,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 12:00:06,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:00:06,147 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-10-24 12:00:06,423 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 12:00:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:06,591 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-10-24 12:00:06,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 12:00:06,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-10-24 12:00:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:06,595 INFO L225 Difference]: With dead ends: 27 [2018-10-24 12:00:06,595 INFO L226 Difference]: Without dead ends: 23 [2018-10-24 12:00:06,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-24 12:00:06,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-24 12:00:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2018-10-24 12:00:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-24 12:00:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-24 12:00:06,602 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2018-10-24 12:00:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:06,602 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-24 12:00:06,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 12:00:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-24 12:00:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 12:00:06,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:06,603 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:06,604 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:06,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:06,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1203127347, now seen corresponding path program 1 times [2018-10-24 12:00:06,604 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:06,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:06,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:06,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:06,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:06,984 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-10-24 12:00:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:06,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:00:06,991 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 [2018-10-24 12:00:07,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:07,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:07,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 12:00:07,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-10-24 12:00:07,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 12:00:07,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 12:00:07,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-24 12:00:07,227 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 11 states. [2018-10-24 12:00:07,618 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-24 12:00:07,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:07,734 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-10-24 12:00:07,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 12:00:07,735 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-10-24 12:00:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:07,736 INFO L225 Difference]: With dead ends: 28 [2018-10-24 12:00:07,736 INFO L226 Difference]: Without dead ends: 20 [2018-10-24 12:00:07,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-10-24 12:00:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-24 12:00:07,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2018-10-24 12:00:07,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-24 12:00:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-10-24 12:00:07,742 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2018-10-24 12:00:07,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:07,742 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-10-24 12:00:07,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 12:00:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-10-24 12:00:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 12:00:07,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:07,743 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:07,743 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:07,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:07,744 INFO L82 PathProgramCache]: Analyzing trace with hash -574981788, now seen corresponding path program 2 times [2018-10-24 12:00:07,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:07,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:07,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:07,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:07,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:07,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:00:07,817 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 [2018-10-24 12:00:07,832 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:00:07,863 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:00:07,863 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:07,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:07,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 12:00:07,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-24 12:00:07,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 12:00:07,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 12:00:07,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 12:00:07,942 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2018-10-24 12:00:07,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:07,999 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-10-24 12:00:07,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 12:00:07,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-24 12:00:08,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:08,000 INFO L225 Difference]: With dead ends: 27 [2018-10-24 12:00:08,000 INFO L226 Difference]: Without dead ends: 19 [2018-10-24 12:00:08,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 12:00:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-24 12:00:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-10-24 12:00:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-24 12:00:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-10-24 12:00:08,006 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2018-10-24 12:00:08,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:08,006 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-10-24 12:00:08,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 12:00:08,007 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-10-24 12:00:08,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 12:00:08,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:08,008 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:08,008 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:08,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:08,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1200025574, now seen corresponding path program 1 times [2018-10-24 12:00:08,009 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:08,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:08,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:08,010 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:08,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:08,292 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:00:08,292 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 [2018-10-24 12:00:08,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:08,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:08,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 12:00:08,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-10-24 12:00:08,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 12:00:08,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 12:00:08,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-10-24 12:00:08,817 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 16 states. [2018-10-24 12:00:09,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:09,280 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-10-24 12:00:09,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 12:00:09,281 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-24 12:00:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:09,283 INFO L225 Difference]: With dead ends: 42 [2018-10-24 12:00:09,283 INFO L226 Difference]: Without dead ends: 30 [2018-10-24 12:00:09,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:00:09,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-24 12:00:09,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-10-24 12:00:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-24 12:00:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-10-24 12:00:09,289 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2018-10-24 12:00:09,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:09,290 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-10-24 12:00:09,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-24 12:00:09,290 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-10-24 12:00:09,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-24 12:00:09,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:09,291 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:09,291 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:09,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1639145836, now seen corresponding path program 2 times [2018-10-24 12:00:09,292 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:09,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:09,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:09,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:00:09,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:09,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:00:09,441 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:00:09,449 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-24 12:00:09,462 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-24 12:00:09,462 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:09,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:09,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 12:00:09,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-24 12:00:09,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 12:00:09,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 12:00:09,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:00:09,501 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2018-10-24 12:00:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:09,665 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-10-24 12:00:09,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 12:00:09,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-10-24 12:00:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:09,673 INFO L225 Difference]: With dead ends: 39 [2018-10-24 12:00:09,673 INFO L226 Difference]: Without dead ends: 31 [2018-10-24 12:00:09,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-24 12:00:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-24 12:00:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2018-10-24 12:00:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-24 12:00:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-10-24 12:00:09,680 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 24 [2018-10-24 12:00:09,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:09,680 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-10-24 12:00:09,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 12:00:09,680 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-10-24 12:00:09,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-24 12:00:09,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:09,681 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:09,682 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:09,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:09,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1741027795, now seen corresponding path program 3 times [2018-10-24 12:00:09,682 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:09,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:09,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:09,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:09,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-24 12:00:09,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:00:09,918 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:00:09,928 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:00:09,937 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-10-24 12:00:09,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:09,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-24 12:00:10,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 12:00:10,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-10-24 12:00:10,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 12:00:10,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 12:00:10,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-24 12:00:10,175 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2018-10-24 12:00:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:10,662 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-10-24 12:00:10,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 12:00:10,662 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-10-24 12:00:10,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:10,664 INFO L225 Difference]: With dead ends: 46 [2018-10-24 12:00:10,664 INFO L226 Difference]: Without dead ends: 34 [2018-10-24 12:00:10,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-10-24 12:00:10,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-24 12:00:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2018-10-24 12:00:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-24 12:00:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-24 12:00:10,671 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 28 [2018-10-24 12:00:10,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:10,671 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-24 12:00:10,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 12:00:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-24 12:00:10,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 12:00:10,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:00:10,672 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:00:10,673 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:00:10,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:00:10,673 INFO L82 PathProgramCache]: Analyzing trace with hash -947189178, now seen corresponding path program 4 times [2018-10-24 12:00:10,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 12:00:10,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 12:00:10,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:10,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:00:10,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:00:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:00:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-24 12:00:11,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:00:11,003 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:00:11,014 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:00:11,040 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:00:11,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:00:11,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:00:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:00:11,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 12:00:11,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 24 [2018-10-24 12:00:11,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 12:00:11,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 12:00:11,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2018-10-24 12:00:11,667 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 24 states. [2018-10-24 12:00:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:00:12,955 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2018-10-24 12:00:12,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-24 12:00:12,956 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 32 [2018-10-24 12:00:12,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:00:12,956 INFO L225 Difference]: With dead ends: 44 [2018-10-24 12:00:12,957 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 12:00:12,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=232, Invalid=1660, Unknown=0, NotChecked=0, Total=1892 [2018-10-24 12:00:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 12:00:12,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 12:00:12,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 12:00:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 12:00:12,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-10-24 12:00:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:00:12,959 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 12:00:12,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-24 12:00:12,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 12:00:12,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 12:00:12,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 12:00:13,072 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:00:13,072 INFO L428 ceAbstractionStarter]: At program point L21(lines 10 22) the Hoare annotation is: true [2018-10-24 12:00:13,072 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-10-24 12:00:13,073 INFO L425 ceAbstractionStarter]: For program point L15-3(lines 15 19) no Hoare annotation was computed. [2018-10-24 12:00:13,073 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 19) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and (<= .cse0 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 .cse0) .cse1) (let ((.cse2 (+ ULTIMATE.start_main_~i~0 1))) (and (<= .cse0 .cse2) (<= .cse2 .cse0) .cse1)) (and (<= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~i~0 0)))) [2018-10-24 12:00:13,073 INFO L425 ceAbstractionStarter]: For program point L15-5(lines 15 19) no Hoare annotation was computed. [2018-10-24 12:00:13,073 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-24 12:00:13,073 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-24 12:00:13,073 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-24 12:00:13,073 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:00:13,073 INFO L425 ceAbstractionStarter]: For program point L16(lines 16 18) no Hoare annotation was computed. [2018-10-24 12:00:13,073 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-24 12:00:13,074 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-24 12:00:13,074 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-24 12:00:13,074 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-10-24 12:00:13,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:00:13 BoogieIcfgContainer [2018-10-24 12:00:13,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:00:13,088 INFO L168 Benchmark]: Toolchain (without parser) took 8444.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -268.1 MB). Peak memory consumption was 481.6 MB. Max. memory is 7.1 GB. [2018-10-24 12:00:13,089 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-24 12:00:13,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.50 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. [2018-10-24 12:00:13,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.72 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. [2018-10-24 12:00:13,091 INFO L168 Benchmark]: Boogie Preprocessor took 23.36 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. [2018-10-24 12:00:13,091 INFO L168 Benchmark]: RCFGBuilder took 349.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -810.9 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-24 12:00:13,093 INFO L168 Benchmark]: TraceAbstraction took 7750.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 532.2 MB). Peak memory consumption was 532.2 MB. Max. memory is 7.1 GB. [2018-10-24 12:00:13,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.50 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 41.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.36 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 349.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -810.9 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7750.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 532.2 MB). Peak memory consumption was 532.2 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((2 * n <= i && i <= 2 * n) && n <= k) || ((2 * n <= i + 1 && i + 1 <= 2 * n) && n <= k)) || ((n <= 0 && 0 <= n) && i == 0) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. SAFE Result, 7.6s OverallTime, 8 OverallIterations, 7 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 79 SDtfs, 90 SDslu, 314 SDs, 0 SdLazy, 775 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 112 SyntacticMatches, 14 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=7, 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, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 248 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 271 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 43887 SizeOfPredicates, 15 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 106/344 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...