java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:17:35,030 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:17:35,032 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:17:35,049 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:17:35,049 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:17:35,051 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:17:35,053 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:17:35,054 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:17:35,056 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:17:35,057 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:17:35,058 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:17:35,058 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:17:35,059 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:17:35,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:17:35,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:17:35,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:17:35,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:17:35,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:17:35,067 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:17:35,068 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:17:35,069 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:17:35,071 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:17:35,073 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:17:35,082 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 14:17:35,097 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:17:35,097 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:17:35,098 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:17:35,098 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:17:35,099 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:17:35,099 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:17:35,099 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:17:35,100 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:17:35,100 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:17:35,100 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:17:35,100 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:17:35,100 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:17:35,101 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:17:35,101 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:17:35,101 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:17:35,101 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:17:35,101 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:17:35,102 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:17:35,102 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:17:35,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:17:35,102 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:17:35,102 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:17:35,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:17:35,103 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:17:35,103 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:17:35,103 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:17:35,103 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:17:35,104 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:17:35,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:17:35,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:17:35,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:17:35,169 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:17:35,170 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:17:35,170 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label14_false-unreach-call.c [2018-10-24 14:17:35,231 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/149dd1d7d/51bdd8f5bc034257931179a9dc45ee14/FLAG16c7db904 [2018-10-24 14:17:36,019 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:17:36,020 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label14_false-unreach-call.c [2018-10-24 14:17:36,043 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/149dd1d7d/51bdd8f5bc034257931179a9dc45ee14/FLAG16c7db904 [2018-10-24 14:17:36,065 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/149dd1d7d/51bdd8f5bc034257931179a9dc45ee14 [2018-10-24 14:17:36,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:17:36,081 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:17:36,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:17:36,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:17:36,089 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:17:36,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:17:36" (1/1) ... [2018-10-24 14:17:36,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b5a5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:36, skipping insertion in model container [2018-10-24 14:17:36,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:17:36" (1/1) ... [2018-10-24 14:17:36,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:17:36,218 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:17:37,021 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:17:37,025 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:17:37,323 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:17:37,346 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:17:37,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37 WrapperNode [2018-10-24 14:17:37,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:17:37,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:17:37,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:17:37,348 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:17:37,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (1/1) ... [2018-10-24 14:17:37,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (1/1) ... [2018-10-24 14:17:37,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:17:37,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:17:37,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:17:37,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:17:37,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (1/1) ... [2018-10-24 14:17:37,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (1/1) ... [2018-10-24 14:17:37,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (1/1) ... [2018-10-24 14:17:37,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (1/1) ... [2018-10-24 14:17:37,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (1/1) ... [2018-10-24 14:17:37,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (1/1) ... [2018-10-24 14:17:37,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (1/1) ... [2018-10-24 14:17:37,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:17:37,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:17:37,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:17:37,971 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:17:37,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (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 14:17:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:17:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:17:38,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:17:48,062 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:17:48,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:17:48 BoogieIcfgContainer [2018-10-24 14:17:48,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:17:48,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:17:48,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:17:48,068 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:17:48,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:17:36" (1/3) ... [2018-10-24 14:17:48,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17895e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:17:48, skipping insertion in model container [2018-10-24 14:17:48,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:37" (2/3) ... [2018-10-24 14:17:48,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17895e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:17:48, skipping insertion in model container [2018-10-24 14:17:48,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:17:48" (3/3) ... [2018-10-24 14:17:48,072 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label14_false-unreach-call.c [2018-10-24 14:17:48,082 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:17:48,092 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:17:48,110 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:17:48,150 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:17:48,150 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:17:48,151 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:17:48,151 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:17:48,151 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:17:48,151 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:17:48,151 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:17:48,152 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:17:48,152 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:17:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-24 14:17:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-24 14:17:48,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:17:48,191 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:17:48,195 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:17:48,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:17:48,202 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-10-24 14:17:48,205 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:17:48,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:17:48,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:48,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:17:48,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:17:48,690 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:17:48,695 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 14:17:48,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:17:48,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:17:48,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:17:48,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:17:48,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:17:48,723 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 5 states. [2018-10-24 14:17:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:17:58,201 INFO L93 Difference]: Finished difference Result 1470 states and 2718 transitions. [2018-10-24 14:17:58,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:17:58,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-10-24 14:17:58,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:17:58,233 INFO L225 Difference]: With dead ends: 1470 [2018-10-24 14:17:58,234 INFO L226 Difference]: Without dead ends: 1038 [2018-10-24 14:17:58,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:17:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-10-24 14:17:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2018-10-24 14:17:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2018-10-24 14:17:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1670 transitions. [2018-10-24 14:17:58,345 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1670 transitions. Word has length 16 [2018-10-24 14:17:58,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:17:58,346 INFO L481 AbstractCegarLoop]: Abstraction has 1036 states and 1670 transitions. [2018-10-24 14:17:58,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:17:58,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1670 transitions. [2018-10-24 14:17:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 14:17:58,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:17:58,353 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:17:58,353 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:17:58,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:17:58,354 INFO L82 PathProgramCache]: Analyzing trace with hash 287976141, now seen corresponding path program 1 times [2018-10-24 14:17:58,354 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:17:58,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:17:58,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:58,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:17:58,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:17:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:17:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:17:58,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:17:58,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:17:58,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:17:58,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:17:58,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:17:58,743 INFO L87 Difference]: Start difference. First operand 1036 states and 1670 transitions. Second operand 4 states. [2018-10-24 14:18:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:18:04,585 INFO L93 Difference]: Finished difference Result 3937 states and 6425 transitions. [2018-10-24 14:18:04,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:18:04,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-24 14:18:04,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:18:04,603 INFO L225 Difference]: With dead ends: 3937 [2018-10-24 14:18:04,603 INFO L226 Difference]: Without dead ends: 2903 [2018-10-24 14:18:04,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:18:04,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2018-10-24 14:18:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1937. [2018-10-24 14:18:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2018-10-24 14:18:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2808 transitions. [2018-10-24 14:18:04,708 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2808 transitions. Word has length 129 [2018-10-24 14:18:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:18:04,709 INFO L481 AbstractCegarLoop]: Abstraction has 1937 states and 2808 transitions. [2018-10-24 14:18:04,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:18:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2808 transitions. [2018-10-24 14:18:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-24 14:18:04,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:18:04,723 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:18:04,726 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:18:04,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:18:04,727 INFO L82 PathProgramCache]: Analyzing trace with hash 610027837, now seen corresponding path program 1 times [2018-10-24 14:18:04,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:18:04,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:18:04,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:04,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:18:04,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:18:05,525 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-24 14:18:05,847 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 14:18:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-24 14:18:06,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:18:06,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:18:06,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:18:06,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:18:06,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:18:06,200 INFO L87 Difference]: Start difference. First operand 1937 states and 2808 transitions. Second operand 5 states. [2018-10-24 14:18:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:18:17,277 INFO L93 Difference]: Finished difference Result 4777 states and 6638 transitions. [2018-10-24 14:18:17,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:18:17,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2018-10-24 14:18:17,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:18:17,294 INFO L225 Difference]: With dead ends: 4777 [2018-10-24 14:18:17,294 INFO L226 Difference]: Without dead ends: 2842 [2018-10-24 14:18:17,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:18:17,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-24 14:18:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2841. [2018-10-24 14:18:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2841 states. [2018-10-24 14:18:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 3775 transitions. [2018-10-24 14:18:17,354 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 3775 transitions. Word has length 290 [2018-10-24 14:18:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:18:17,355 INFO L481 AbstractCegarLoop]: Abstraction has 2841 states and 3775 transitions. [2018-10-24 14:18:17,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:18:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 3775 transitions. [2018-10-24 14:18:17,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-24 14:18:17,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:18:17,361 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:18:17,361 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:18:17,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:18:17,362 INFO L82 PathProgramCache]: Analyzing trace with hash -859833653, now seen corresponding path program 1 times [2018-10-24 14:18:17,362 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:18:17,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:18:17,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:17,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:18:17,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:18:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 31 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:18:18,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:18:18,875 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 14:18:18,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:18:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:18:19,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:18:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:18:19,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:18:19,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2018-10-24 14:18:19,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:18:19,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:18:19,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:18:19,376 INFO L87 Difference]: Start difference. First operand 2841 states and 3775 transitions. Second operand 12 states. [2018-10-24 14:18:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:18:41,348 INFO L93 Difference]: Finished difference Result 9555 states and 12449 transitions. [2018-10-24 14:18:41,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 14:18:41,349 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 364 [2018-10-24 14:18:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:18:41,381 INFO L225 Difference]: With dead ends: 9555 [2018-10-24 14:18:41,382 INFO L226 Difference]: Without dead ends: 6716 [2018-10-24 14:18:41,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 368 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2018-10-24 14:18:41,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2018-10-24 14:18:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 5199. [2018-10-24 14:18:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5199 states. [2018-10-24 14:18:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6574 transitions. [2018-10-24 14:18:41,500 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6574 transitions. Word has length 364 [2018-10-24 14:18:41,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:18:41,501 INFO L481 AbstractCegarLoop]: Abstraction has 5199 states and 6574 transitions. [2018-10-24 14:18:41,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 14:18:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6574 transitions. [2018-10-24 14:18:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-24 14:18:41,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:18:41,510 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:18:41,511 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:18:41,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:18:41,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1888187913, now seen corresponding path program 1 times [2018-10-24 14:18:41,511 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:18:41,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:18:41,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:41,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:18:41,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:18:42,393 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-24 14:18:42,664 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-24 14:18:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 267 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-24 14:18:43,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:18:43,187 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 14:18:43,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:18:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:18:43,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:18:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-24 14:18:43,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:18:43,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 14:18:43,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:18:43,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:18:43,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:18:43,446 INFO L87 Difference]: Start difference. First operand 5199 states and 6574 transitions. Second operand 8 states. [2018-10-24 14:18:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:18:55,819 INFO L93 Difference]: Finished difference Result 14466 states and 17816 transitions. [2018-10-24 14:18:55,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:18:55,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 382 [2018-10-24 14:18:55,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:18:55,844 INFO L225 Difference]: With dead ends: 14466 [2018-10-24 14:18:55,844 INFO L226 Difference]: Without dead ends: 6095 [2018-10-24 14:18:55,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 385 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:18:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6095 states. [2018-10-24 14:18:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6095 to 5755. [2018-10-24 14:18:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5755 states. [2018-10-24 14:18:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 6941 transitions. [2018-10-24 14:18:55,960 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 6941 transitions. Word has length 382 [2018-10-24 14:18:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:18:55,960 INFO L481 AbstractCegarLoop]: Abstraction has 5755 states and 6941 transitions. [2018-10-24 14:18:55,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:18:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 6941 transitions. [2018-10-24 14:18:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-10-24 14:18:55,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:18:55,972 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:18:55,973 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:18:55,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:18:55,973 INFO L82 PathProgramCache]: Analyzing trace with hash 835520680, now seen corresponding path program 1 times [2018-10-24 14:18:55,973 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:18:55,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:18:55,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:55,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:18:55,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:18:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-10-24 14:18:56,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:18:56,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:18:56,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:18:56,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:18:56,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:18:56,489 INFO L87 Difference]: Start difference. First operand 5755 states and 6941 transitions. Second operand 3 states. [2018-10-24 14:18:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:18:59,578 INFO L93 Difference]: Finished difference Result 15580 states and 19013 transitions. [2018-10-24 14:18:59,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:18:59,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 493 [2018-10-24 14:18:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:18:59,628 INFO L225 Difference]: With dead ends: 15580 [2018-10-24 14:18:59,628 INFO L226 Difference]: Without dead ends: 9827 [2018-10-24 14:18:59,636 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 [2018-10-24 14:18:59,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9827 states. [2018-10-24 14:18:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9827 to 9827. [2018-10-24 14:18:59,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9827 states. [2018-10-24 14:18:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9827 states to 9827 states and 11787 transitions. [2018-10-24 14:18:59,836 INFO L78 Accepts]: Start accepts. Automaton has 9827 states and 11787 transitions. Word has length 493 [2018-10-24 14:18:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:18:59,837 INFO L481 AbstractCegarLoop]: Abstraction has 9827 states and 11787 transitions. [2018-10-24 14:18:59,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:18:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 9827 states and 11787 transitions. [2018-10-24 14:18:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-10-24 14:18:59,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:18:59,862 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:18:59,862 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:18:59,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:18:59,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2132258317, now seen corresponding path program 1 times [2018-10-24 14:18:59,865 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:18:59,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:18:59,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:59,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:18:59,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:18:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:19:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-10-24 14:19:00,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:19:00,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:19:00,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:19:00,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:19:00,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:19:00,614 INFO L87 Difference]: Start difference. First operand 9827 states and 11787 transitions. Second operand 4 states. [2018-10-24 14:19:04,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:19:04,896 INFO L93 Difference]: Finished difference Result 19954 states and 23949 transitions. [2018-10-24 14:19:04,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:19:04,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 548 [2018-10-24 14:19:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:19:04,918 INFO L225 Difference]: With dead ends: 19954 [2018-10-24 14:19:04,918 INFO L226 Difference]: Without dead ends: 10129 [2018-10-24 14:19:04,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:19:04,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10129 states. [2018-10-24 14:19:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10129 to 9824. [2018-10-24 14:19:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9824 states. [2018-10-24 14:19:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9824 states to 9824 states and 11317 transitions. [2018-10-24 14:19:05,063 INFO L78 Accepts]: Start accepts. Automaton has 9824 states and 11317 transitions. Word has length 548 [2018-10-24 14:19:05,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:19:05,064 INFO L481 AbstractCegarLoop]: Abstraction has 9824 states and 11317 transitions. [2018-10-24 14:19:05,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:19:05,064 INFO L276 IsEmpty]: Start isEmpty. Operand 9824 states and 11317 transitions. [2018-10-24 14:19:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-10-24 14:19:05,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:19:05,080 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:19:05,080 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:19:05,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:19:05,081 INFO L82 PathProgramCache]: Analyzing trace with hash 753076855, now seen corresponding path program 1 times [2018-10-24 14:19:05,081 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:19:05,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:19:05,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:05,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:19:05,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:19:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-10-24 14:19:06,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:19:06,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:19:06,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:19:06,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:19:06,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:19:06,074 INFO L87 Difference]: Start difference. First operand 9824 states and 11317 transitions. Second operand 5 states. [2018-10-24 14:19:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:19:11,595 INFO L93 Difference]: Finished difference Result 30431 states and 35376 transitions. [2018-10-24 14:19:11,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:19:11,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 554 [2018-10-24 14:19:11,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:19:11,634 INFO L225 Difference]: With dead ends: 30431 [2018-10-24 14:19:11,635 INFO L226 Difference]: Without dead ends: 20609 [2018-10-24 14:19:11,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:19:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20609 states. [2018-10-24 14:19:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20609 to 16947. [2018-10-24 14:19:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16947 states. [2018-10-24 14:19:11,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16947 states to 16947 states and 19062 transitions. [2018-10-24 14:19:11,926 INFO L78 Accepts]: Start accepts. Automaton has 16947 states and 19062 transitions. Word has length 554 [2018-10-24 14:19:11,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:19:11,927 INFO L481 AbstractCegarLoop]: Abstraction has 16947 states and 19062 transitions. [2018-10-24 14:19:11,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:19:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 16947 states and 19062 transitions. [2018-10-24 14:19:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2018-10-24 14:19:11,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:19:11,954 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:19:11,955 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:19:11,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:19:11,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1461292683, now seen corresponding path program 1 times [2018-10-24 14:19:11,955 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:19:11,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:19:11,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:11,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:19:11,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:19:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 369 proven. 105 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-10-24 14:19:12,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:19:12,621 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 14:19:12,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:19:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:19:12,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:19:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 369 proven. 105 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-10-24 14:19:13,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:19:13,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 9 [2018-10-24 14:19:13,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:19:13,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:19:13,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:19:13,769 INFO L87 Difference]: Start difference. First operand 16947 states and 19062 transitions. Second operand 9 states. [2018-10-24 14:19:32,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:19:32,004 INFO L93 Difference]: Finished difference Result 56725 states and 64252 transitions. [2018-10-24 14:19:32,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 14:19:32,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 649 [2018-10-24 14:19:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:19:32,065 INFO L225 Difference]: With dead ends: 56725 [2018-10-24 14:19:32,066 INFO L226 Difference]: Without dead ends: 40080 [2018-10-24 14:19:32,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 655 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-10-24 14:19:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40080 states. [2018-10-24 14:19:32,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40080 to 35340. [2018-10-24 14:19:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35340 states. [2018-10-24 14:19:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35340 states to 35340 states and 38245 transitions. [2018-10-24 14:19:32,571 INFO L78 Accepts]: Start accepts. Automaton has 35340 states and 38245 transitions. Word has length 649 [2018-10-24 14:19:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:19:32,572 INFO L481 AbstractCegarLoop]: Abstraction has 35340 states and 38245 transitions. [2018-10-24 14:19:32,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 14:19:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 35340 states and 38245 transitions. [2018-10-24 14:19:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-10-24 14:19:32,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:19:32,599 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:19:32,599 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:19:32,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:19:32,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1789978358, now seen corresponding path program 1 times [2018-10-24 14:19:32,600 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:19:32,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:19:32,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:32,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:19:32,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:19:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2018-10-24 14:19:33,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:19:33,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:19:33,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:19:33,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:19:33,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:19:33,094 INFO L87 Difference]: Start difference. First operand 35340 states and 38245 transitions. Second operand 3 states. [2018-10-24 14:19:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:19:38,738 INFO L93 Difference]: Finished difference Result 70376 states and 76184 transitions. [2018-10-24 14:19:38,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:19:38,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 712 [2018-10-24 14:19:38,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:19:38,780 INFO L225 Difference]: With dead ends: 70376 [2018-10-24 14:19:38,781 INFO L226 Difference]: Without dead ends: 35338 [2018-10-24 14:19:38,804 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 [2018-10-24 14:19:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35338 states. [2018-10-24 14:19:39,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35338 to 35338. [2018-10-24 14:19:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35338 states. [2018-10-24 14:19:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35338 states to 35338 states and 38241 transitions. [2018-10-24 14:19:39,249 INFO L78 Accepts]: Start accepts. Automaton has 35338 states and 38241 transitions. Word has length 712 [2018-10-24 14:19:39,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:19:39,249 INFO L481 AbstractCegarLoop]: Abstraction has 35338 states and 38241 transitions. [2018-10-24 14:19:39,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:19:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 35338 states and 38241 transitions. [2018-10-24 14:19:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-10-24 14:19:39,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:19:39,286 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:19:39,286 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:19:39,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:19:39,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1654596742, now seen corresponding path program 1 times [2018-10-24 14:19:39,287 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:19:39,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:19:39,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:39,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:19:39,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:19:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-10-24 14:19:40,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:19:40,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 14:19:40,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:19:40,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:19:40,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:19:40,546 INFO L87 Difference]: Start difference. First operand 35338 states and 38241 transitions. Second operand 6 states. [2018-10-24 14:19:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:19:47,896 INFO L93 Difference]: Finished difference Result 79480 states and 85720 transitions. [2018-10-24 14:19:47,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:19:47,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 752 [2018-10-24 14:19:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:19:47,936 INFO L225 Difference]: With dead ends: 79480 [2018-10-24 14:19:47,936 INFO L226 Difference]: Without dead ends: 44444 [2018-10-24 14:19:47,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:19:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44444 states. [2018-10-24 14:19:48,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44444 to 35338. [2018-10-24 14:19:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35338 states. [2018-10-24 14:19:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35338 states to 35338 states and 38223 transitions. [2018-10-24 14:19:48,385 INFO L78 Accepts]: Start accepts. Automaton has 35338 states and 38223 transitions. Word has length 752 [2018-10-24 14:19:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:19:48,386 INFO L481 AbstractCegarLoop]: Abstraction has 35338 states and 38223 transitions. [2018-10-24 14:19:48,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:19:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 35338 states and 38223 transitions. [2018-10-24 14:19:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2018-10-24 14:19:48,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:19:48,409 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:19:48,409 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:19:48,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:19:48,410 INFO L82 PathProgramCache]: Analyzing trace with hash -227398086, now seen corresponding path program 1 times [2018-10-24 14:19:48,410 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:19:48,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:19:48,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:48,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:19:48,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:19:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:19:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 604 proven. 107 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2018-10-24 14:19:50,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:19:50,152 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 14:19:50,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:19:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:19:50,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:19:51,023 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2018-10-24 14:19:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 604 proven. 107 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2018-10-24 14:19:52,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:19:52,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3] total 11 [2018-10-24 14:19:52,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:19:52,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:19:52,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:19:52,207 INFO L87 Difference]: Start difference. First operand 35338 states and 38223 transitions. Second operand 12 states. Received shutdown request... [2018-10-24 14:21:47,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:21:47,452 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:21:47,458 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:21:47,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:21:47 BoogieIcfgContainer [2018-10-24 14:21:47,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:21:47,460 INFO L168 Benchmark]: Toolchain (without parser) took 251380.25 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.0 GB). Peak memory consumption was 560.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:47,461 INFO L168 Benchmark]: CDTParser took 0.24 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 14:21:47,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1265.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:47,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 377.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:47,463 INFO L168 Benchmark]: Boogie Preprocessor took 244.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:47,463 INFO L168 Benchmark]: RCFGBuilder took 10092.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 301.8 MB). Peak memory consumption was 301.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:47,464 INFO L168 Benchmark]: TraceAbstraction took 239394.47 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 226.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:21:47,469 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1265.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 377.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.6 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 244.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10092.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 301.8 MB). Peak memory consumption was 301.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239394.47 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 226.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (35338states) and FLOYD_HOARE automaton (currently 8 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (46895 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 239.3s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 220.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3256 SDtfs, 18240 SDslu, 3275 SDs, 0 SdLazy, 47772 SolverSat, 6578 SolverUnsat, 56 SolverUnknown, 0 SolverNotchecked, 205.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2269 GetRequests, 2181 SyntacticMatches, 15 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35340occurred in iteration=9, 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: 2.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 20639 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 7800 NumberOfCodeBlocks, 7800 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7784 ConstructedInterpolants, 108 QuantifiedInterpolants, 20799373 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2584 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 6487/6987 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown