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/Problem13_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:25:26,180 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:25:26,182 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:25:26,200 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:25:26,201 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:25:26,202 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:25:26,203 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:25:26,205 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:25:26,207 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:25:26,211 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:25:26,212 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:25:26,213 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:25:26,214 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:25:26,215 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:25:26,216 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:25:26,217 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:25:26,217 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:25:26,219 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:25:26,221 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:25:26,223 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:25:26,227 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:25:26,228 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:25:26,232 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:25:26,232 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:25:26,232 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:25:26,235 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:25:26,238 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:25:26,240 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:25:26,240 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:25:26,241 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:25:26,242 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:25:26,244 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 21:25:26,249 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 [2018-10-26 21:25:26,276 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:25:26,276 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:25:26,277 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:25:26,277 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:25:26,278 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:25:26,278 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:25:26,279 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:25:26,279 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:25:26,279 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:25:26,279 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:25:26,279 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:25:26,280 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:25:26,280 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:25:26,280 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:25:26,280 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:25:26,281 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:25:26,281 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:25:26,281 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:25:26,281 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:25:26,281 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:25:26,282 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:25:26,282 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:25:26,282 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:25:26,282 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:25:26,283 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:25:26,283 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:25:26,283 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:25:26,283 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:25:26,335 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:25:26,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:25:26,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:25:26,355 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:25:26,356 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:25:26,356 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-10-26 21:25:26,420 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c6cb8ebb6/8fb112aabfc14198a24b3d8bf14a3c2e/FLAG65e593953 [2018-10-26 21:25:27,250 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:25:27,251 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label17_true-unreach-call.c [2018-10-26 21:25:27,284 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c6cb8ebb6/8fb112aabfc14198a24b3d8bf14a3c2e/FLAG65e593953 [2018-10-26 21:25:27,300 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c6cb8ebb6/8fb112aabfc14198a24b3d8bf14a3c2e [2018-10-26 21:25:27,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:25:27,314 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:25:27,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:25:27,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:25:27,320 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:25:27,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:25:27" (1/1) ... [2018-10-26 21:25:27,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:27, skipping insertion in model container [2018-10-26 21:25:27,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:25:27" (1/1) ... [2018-10-26 21:25:27,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:25:27,507 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:25:29,036 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:25:29,042 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:25:29,808 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:25:29,850 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:25:29,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29 WrapperNode [2018-10-26 21:25:29,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:25:29,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:25:29,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:25:29,852 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:25:29,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (1/1) ... [2018-10-26 21:25:29,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (1/1) ... [2018-10-26 21:25:30,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:25:30,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:25:30,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:25:30,763 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:25:30,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (1/1) ... [2018-10-26 21:25:30,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (1/1) ... [2018-10-26 21:25:30,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (1/1) ... [2018-10-26 21:25:30,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (1/1) ... [2018-10-26 21:25:31,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (1/1) ... [2018-10-26 21:25:31,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (1/1) ... [2018-10-26 21:25:31,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (1/1) ... [2018-10-26 21:25:31,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:25:31,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:25:31,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:25:31,232 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:25:31,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (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 [2018-10-26 21:25:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:25:31,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:25:31,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:25:44,808 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:25:44,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:25:44 BoogieIcfgContainer [2018-10-26 21:25:44,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:25:44,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:25:44,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:25:44,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:25:44,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:25:27" (1/3) ... [2018-10-26 21:25:44,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370b9554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:25:44, skipping insertion in model container [2018-10-26 21:25:44,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:25:29" (2/3) ... [2018-10-26 21:25:44,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370b9554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:25:44, skipping insertion in model container [2018-10-26 21:25:44,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:25:44" (3/3) ... [2018-10-26 21:25:44,817 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label17_true-unreach-call.c [2018-10-26 21:25:44,827 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:25:44,836 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:25:44,854 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:25:44,908 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:25:44,909 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:25:44,909 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:25:44,909 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:25:44,909 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:25:44,909 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:25:44,909 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:25:44,910 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:25:44,910 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:25:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 21:25:44,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 21:25:44,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:25:44,976 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:25:44,979 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:25:44,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:25:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash 646480794, now seen corresponding path program 1 times [2018-10-26 21:25:44,987 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:25:44,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:25:45,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:45,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:25:45,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:25:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:25:45,437 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-26 21:25:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:25:45,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:25:45,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:25:45,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:25:45,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:25:45,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:25:45,473 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 21:26:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:02,772 INFO L93 Difference]: Finished difference Result 3991 states and 7504 transitions. [2018-10-26 21:26:02,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:26:02,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-26 21:26:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:02,825 INFO L225 Difference]: With dead ends: 3991 [2018-10-26 21:26:02,826 INFO L226 Difference]: Without dead ends: 2885 [2018-10-26 21:26:02,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:02,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2018-10-26 21:26:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1946. [2018-10-26 21:26:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1946 states. [2018-10-26 21:26:03,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 3412 transitions. [2018-10-26 21:26:03,019 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 3412 transitions. Word has length 34 [2018-10-26 21:26:03,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:03,021 INFO L481 AbstractCegarLoop]: Abstraction has 1946 states and 3412 transitions. [2018-10-26 21:26:03,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:26:03,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 3412 transitions. [2018-10-26 21:26:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-26 21:26:03,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:03,026 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:26:03,027 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:03,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:03,027 INFO L82 PathProgramCache]: Analyzing trace with hash 322636028, now seen corresponding path program 1 times [2018-10-26 21:26:03,027 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:03,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:03,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:03,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:03,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:26:03,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:03,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:26:03,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:26:03,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:26:03,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:03,352 INFO L87 Difference]: Start difference. First operand 1946 states and 3412 transitions. Second operand 4 states. [2018-10-26 21:26:19,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:19,744 INFO L93 Difference]: Finished difference Result 7107 states and 12745 transitions. [2018-10-26 21:26:19,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:26:19,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-26 21:26:19,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:19,777 INFO L225 Difference]: With dead ends: 7107 [2018-10-26 21:26:19,777 INFO L226 Difference]: Without dead ends: 5163 [2018-10-26 21:26:19,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:26:19,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5163 states. [2018-10-26 21:26:19,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5163 to 5141. [2018-10-26 21:26:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5141 states. [2018-10-26 21:26:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 8063 transitions. [2018-10-26 21:26:19,898 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 8063 transitions. Word has length 101 [2018-10-26 21:26:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:19,898 INFO L481 AbstractCegarLoop]: Abstraction has 5141 states and 8063 transitions. [2018-10-26 21:26:19,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:26:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 8063 transitions. [2018-10-26 21:26:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-26 21:26:19,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:19,909 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:26:19,910 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:19,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2124125896, now seen corresponding path program 1 times [2018-10-26 21:26:19,910 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:19,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:19,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:19,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:19,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:20,721 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2018-10-26 21:26:21,072 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:26:21,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:26:21,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 21:26:21,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:26:21,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:26:21,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:26:21,074 INFO L87 Difference]: Start difference. First operand 5141 states and 8063 transitions. Second operand 8 states. [2018-10-26 21:26:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:26:37,282 INFO L93 Difference]: Finished difference Result 12647 states and 18962 transitions. [2018-10-26 21:26:37,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:26:37,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2018-10-26 21:26:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:26:37,321 INFO L225 Difference]: With dead ends: 12647 [2018-10-26 21:26:37,321 INFO L226 Difference]: Without dead ends: 7508 [2018-10-26 21:26:37,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-10-26 21:26:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7508 states. [2018-10-26 21:26:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7508 to 6717. [2018-10-26 21:26:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6717 states. [2018-10-26 21:26:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6717 states to 6717 states and 9650 transitions. [2018-10-26 21:26:37,461 INFO L78 Accepts]: Start accepts. Automaton has 6717 states and 9650 transitions. Word has length 189 [2018-10-26 21:26:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:26:37,462 INFO L481 AbstractCegarLoop]: Abstraction has 6717 states and 9650 transitions. [2018-10-26 21:26:37,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:26:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6717 states and 9650 transitions. [2018-10-26 21:26:37,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-26 21:26:37,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:26:37,468 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:26:37,473 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:26:37,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:26:37,474 INFO L82 PathProgramCache]: Analyzing trace with hash -750866619, now seen corresponding path program 1 times [2018-10-26 21:26:37,474 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:26:37,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:26:37,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:37,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:37,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:26:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 67 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:26:37,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:26:37,954 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 [2018-10-26 21:26:37,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:26:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:26:38,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:26:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:26:38,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:26:38,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 21:26:38,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:26:38,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:26:38,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:26:38,334 INFO L87 Difference]: Start difference. First operand 6717 states and 9650 transitions. Second operand 6 states. [2018-10-26 21:27:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:10,126 INFO L93 Difference]: Finished difference Result 31065 states and 47529 transitions. [2018-10-26 21:27:10,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 21:27:10,129 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 235 [2018-10-26 21:27:10,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:10,216 INFO L225 Difference]: With dead ends: 31065 [2018-10-26 21:27:10,216 INFO L226 Difference]: Without dead ends: 24350 [2018-10-26 21:27:10,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:27:10,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24350 states. [2018-10-26 21:27:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24350 to 24167. [2018-10-26 21:27:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24167 states. [2018-10-26 21:27:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24167 states to 24167 states and 34044 transitions. [2018-10-26 21:27:10,694 INFO L78 Accepts]: Start accepts. Automaton has 24167 states and 34044 transitions. Word has length 235 [2018-10-26 21:27:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:10,695 INFO L481 AbstractCegarLoop]: Abstraction has 24167 states and 34044 transitions. [2018-10-26 21:27:10,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:27:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 24167 states and 34044 transitions. [2018-10-26 21:27:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-26 21:27:10,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:10,704 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:27:10,705 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:10,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:10,705 INFO L82 PathProgramCache]: Analyzing trace with hash 410032636, now seen corresponding path program 1 times [2018-10-26 21:27:10,705 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:10,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:10,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:10,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:10,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:11,139 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 21:27:11,406 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 21:27:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 247 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-26 21:27:11,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:27:11,742 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 [2018-10-26 21:27:11,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:11,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:27:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-26 21:27:11,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:27:11,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-26 21:27:12,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:27:12,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:27:12,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:27:12,002 INFO L87 Difference]: Start difference. First operand 24167 states and 34044 transitions. Second operand 6 states. [2018-10-26 21:27:28,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:28,003 INFO L93 Difference]: Finished difference Result 105057 states and 150578 transitions. [2018-10-26 21:27:28,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:27:28,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 304 [2018-10-26 21:27:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:28,139 INFO L225 Difference]: With dead ends: 105057 [2018-10-26 21:27:28,140 INFO L226 Difference]: Without dead ends: 80892 [2018-10-26 21:27:28,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 304 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:27:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80892 states. [2018-10-26 21:27:29,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80892 to 80099. [2018-10-26 21:27:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80099 states. [2018-10-26 21:27:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80099 states to 80099 states and 99565 transitions. [2018-10-26 21:27:29,357 INFO L78 Accepts]: Start accepts. Automaton has 80099 states and 99565 transitions. Word has length 304 [2018-10-26 21:27:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:29,358 INFO L481 AbstractCegarLoop]: Abstraction has 80099 states and 99565 transitions. [2018-10-26 21:27:29,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:27:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 80099 states and 99565 transitions. [2018-10-26 21:27:29,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-26 21:27:29,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:29,397 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:27:29,397 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:29,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:29,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1649858408, now seen corresponding path program 1 times [2018-10-26 21:27:29,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:29,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:29,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:29,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:29,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-26 21:27:30,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:27:30,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:27:30,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:27:30,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:27:30,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:30,565 INFO L87 Difference]: Start difference. First operand 80099 states and 99565 transitions. Second operand 4 states. [2018-10-26 21:27:42,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:42,124 INFO L93 Difference]: Finished difference Result 179135 states and 224319 transitions. [2018-10-26 21:27:42,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:27:42,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2018-10-26 21:27:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:42,256 INFO L225 Difference]: With dead ends: 179135 [2018-10-26 21:27:42,257 INFO L226 Difference]: Without dead ends: 99038 [2018-10-26 21:27:42,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:27:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99038 states. [2018-10-26 21:27:44,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99038 to 99009. [2018-10-26 21:27:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99009 states. [2018-10-26 21:27:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99009 states to 99009 states and 117868 transitions. [2018-10-26 21:27:44,200 INFO L78 Accepts]: Start accepts. Automaton has 99009 states and 117868 transitions. Word has length 413 [2018-10-26 21:27:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:44,201 INFO L481 AbstractCegarLoop]: Abstraction has 99009 states and 117868 transitions. [2018-10-26 21:27:44,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:27:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 99009 states and 117868 transitions. [2018-10-26 21:27:44,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-10-26 21:27:44,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:44,245 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 2, 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] [2018-10-26 21:27:44,245 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:44,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:44,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1668630669, now seen corresponding path program 1 times [2018-10-26 21:27:44,245 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:44,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:44,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:44,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:44,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-26 21:27:44,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:27:44,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:27:44,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:27:44,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:27:44,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:27:44,670 INFO L87 Difference]: Start difference. First operand 99009 states and 117868 transitions. Second operand 3 states. [2018-10-26 21:27:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:27:52,099 INFO L93 Difference]: Finished difference Result 197997 states and 235375 transitions. [2018-10-26 21:27:52,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:27:52,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 422 [2018-10-26 21:27:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:27:52,206 INFO L225 Difference]: With dead ends: 197997 [2018-10-26 21:27:52,206 INFO L226 Difference]: Without dead ends: 95836 [2018-10-26 21:27:52,265 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 [2018-10-26 21:27:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95836 states. [2018-10-26 21:27:52,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95836 to 90305. [2018-10-26 21:27:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90305 states. [2018-10-26 21:27:53,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90305 states to 90305 states and 102459 transitions. [2018-10-26 21:27:53,043 INFO L78 Accepts]: Start accepts. Automaton has 90305 states and 102459 transitions. Word has length 422 [2018-10-26 21:27:53,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:27:53,044 INFO L481 AbstractCegarLoop]: Abstraction has 90305 states and 102459 transitions. [2018-10-26 21:27:53,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:27:53,044 INFO L276 IsEmpty]: Start isEmpty. Operand 90305 states and 102459 transitions. [2018-10-26 21:27:53,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-10-26 21:27:53,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:27:53,076 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:27:53,076 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:27:53,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:27:53,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1432005481, now seen corresponding path program 1 times [2018-10-26 21:27:53,077 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:27:53,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:27:53,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:53,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:53,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:27:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 349 proven. 132 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-10-26 21:27:54,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:27:54,465 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 [2018-10-26 21:27:54,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:27:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:27:54,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:27:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-26 21:27:54,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:27:54,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 21:27:54,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:27:54,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:27:54,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:27:54,909 INFO L87 Difference]: Start difference. First operand 90305 states and 102459 transitions. Second operand 5 states. [2018-10-26 21:28:09,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:28:09,658 INFO L93 Difference]: Finished difference Result 341389 states and 386834 transitions. [2018-10-26 21:28:09,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:28:09,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 450 [2018-10-26 21:28:09,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:28:09,918 INFO L225 Difference]: With dead ends: 341389 [2018-10-26 21:28:09,918 INFO L226 Difference]: Without dead ends: 243172 [2018-10-26 21:28:09,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:28:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243172 states. [2018-10-26 21:28:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243172 to 175348. [2018-10-26 21:28:11,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175348 states. [2018-10-26 21:28:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175348 states to 175348 states and 191284 transitions. [2018-10-26 21:28:11,746 INFO L78 Accepts]: Start accepts. Automaton has 175348 states and 191284 transitions. Word has length 450 [2018-10-26 21:28:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:28:11,747 INFO L481 AbstractCegarLoop]: Abstraction has 175348 states and 191284 transitions. [2018-10-26 21:28:11,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:28:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 175348 states and 191284 transitions. [2018-10-26 21:28:11,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-10-26 21:28:11,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:28:11,766 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-26 21:28:11,766 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:28:11,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:28:11,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1727726908, now seen corresponding path program 1 times [2018-10-26 21:28:11,767 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:28:11,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:28:11,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:11,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:28:11,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:28:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 460 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-10-26 21:28:13,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:28:13,260 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 [2018-10-26 21:28:13,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:28:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:28:13,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:28:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 460 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-10-26 21:28:13,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:28:13,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 21:28:13,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:28:13,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:28:13,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:28:13,809 INFO L87 Difference]: Start difference. First operand 175348 states and 191284 transitions. Second operand 5 states. [2018-10-26 21:28:32,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:28:32,890 INFO L93 Difference]: Finished difference Result 349941 states and 381832 transitions. [2018-10-26 21:28:32,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:28:32,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 532 [2018-10-26 21:28:32,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:28:33,086 INFO L225 Difference]: With dead ends: 349941 [2018-10-26 21:28:33,086 INFO L226 Difference]: Without dead ends: 171423 [2018-10-26 21:28:33,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:28:33,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171423 states. [2018-10-26 21:28:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171423 to 166649. [2018-10-26 21:28:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166649 states. [2018-10-26 21:28:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166649 states to 166649 states and 176491 transitions. [2018-10-26 21:28:36,071 INFO L78 Accepts]: Start accepts. Automaton has 166649 states and 176491 transitions. Word has length 532 [2018-10-26 21:28:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:28:36,072 INFO L481 AbstractCegarLoop]: Abstraction has 166649 states and 176491 transitions. [2018-10-26 21:28:36,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:28:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 166649 states and 176491 transitions. [2018-10-26 21:28:36,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-10-26 21:28:36,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:28:36,089 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 21:28:36,089 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:28:36,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:28:36,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2101680439, now seen corresponding path program 1 times [2018-10-26 21:28:36,090 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:28:36,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:28:36,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:36,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:28:36,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:28:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-26 21:28:36,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:28:36,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:28:36,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:28:36,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:28:36,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:28:36,759 INFO L87 Difference]: Start difference. First operand 166649 states and 176491 transitions. Second operand 4 states. [2018-10-26 21:28:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:28:46,579 INFO L93 Difference]: Finished difference Result 341178 states and 361050 transitions. [2018-10-26 21:28:46,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:28:46,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 553 [2018-10-26 21:28:46,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:28:46,799 INFO L225 Difference]: With dead ends: 341178 [2018-10-26 21:28:46,799 INFO L226 Difference]: Without dead ends: 168201 [2018-10-26 21:28:46,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:28:47,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168201 states. [2018-10-26 21:28:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168201 to 164259. [2018-10-26 21:28:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164259 states. [2018-10-26 21:28:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164259 states to 164259 states and 172773 transitions. [2018-10-26 21:28:49,957 INFO L78 Accepts]: Start accepts. Automaton has 164259 states and 172773 transitions. Word has length 553 [2018-10-26 21:28:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:28:49,958 INFO L481 AbstractCegarLoop]: Abstraction has 164259 states and 172773 transitions. [2018-10-26 21:28:49,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:28:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 164259 states and 172773 transitions. [2018-10-26 21:28:49,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-10-26 21:28:49,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:28:49,983 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-26 21:28:49,984 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:28:49,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:28:49,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1391345164, now seen corresponding path program 1 times [2018-10-26 21:28:49,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:28:49,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:28:49,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:49,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:28:49,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:28:50,855 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-26 21:28:51,100 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-26 21:28:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 905 proven. 189 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2018-10-26 21:28:55,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:28:55,558 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 [2018-10-26 21:28:55,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:28:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:28:55,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:28:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 905 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-10-26 21:28:56,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:28:56,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-10-26 21:28:56,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:28:56,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:28:56,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:28:56,197 INFO L87 Difference]: Start difference. First operand 164259 states and 172773 transitions. Second operand 8 states. [2018-10-26 21:29:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:29:08,389 INFO L93 Difference]: Finished difference Result 331781 states and 349175 transitions. [2018-10-26 21:29:08,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 21:29:08,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 712 [2018-10-26 21:29:08,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:29:08,602 INFO L225 Difference]: With dead ends: 331781 [2018-10-26 21:29:08,602 INFO L226 Difference]: Without dead ends: 168312 [2018-10-26 21:29:08,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 715 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:29:08,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168312 states. [2018-10-26 21:29:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168312 to 164223. [2018-10-26 21:29:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164223 states. [2018-10-26 21:29:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164223 states to 164223 states and 170275 transitions. [2018-10-26 21:29:10,846 INFO L78 Accepts]: Start accepts. Automaton has 164223 states and 170275 transitions. Word has length 712 [2018-10-26 21:29:10,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:29:10,846 INFO L481 AbstractCegarLoop]: Abstraction has 164223 states and 170275 transitions. [2018-10-26 21:29:10,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:29:10,846 INFO L276 IsEmpty]: Start isEmpty. Operand 164223 states and 170275 transitions. [2018-10-26 21:29:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2018-10-26 21:29:10,864 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:29:10,865 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:29:10,865 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:29:10,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:29:10,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1796462339, now seen corresponding path program 1 times [2018-10-26 21:29:10,866 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:29:10,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:29:10,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:10,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:29:10,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-26 21:29:11,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 620 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2018-10-26 21:29:11,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:29:11,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:29:11,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:29:11,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:29:11,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:29:11,477 INFO L87 Difference]: Start difference. First operand 164223 states and 170275 transitions. Second operand 3 states. [2018-10-26 21:29:11,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:29:11,479 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:29:11,484 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:29:11,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:29:11 BoogieIcfgContainer [2018-10-26 21:29:11,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:29:11,485 INFO L168 Benchmark]: Toolchain (without parser) took 224172.49 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -568.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-26 21:29:11,486 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-10-26 21:29:11,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2536.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:29:11,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 910.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -961.6 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-26 21:29:11,489 INFO L168 Benchmark]: Boogie Preprocessor took 467.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 74.8 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. [2018-10-26 21:29:11,489 INFO L168 Benchmark]: RCFGBuilder took 13577.67 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 291.5 MB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -88.2 MB). Peak memory consumption was 637.0 MB. Max. memory is 7.1 GB. [2018-10-26 21:29:11,490 INFO L168 Benchmark]: TraceAbstraction took 206674.43 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 163.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-26 21:29:11,496 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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. * CACSL2BoogieTranslator took 2536.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 910.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -961.6 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 467.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 74.8 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13577.67 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 291.5 MB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -88.2 MB). Peak memory consumption was 637.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206674.43 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 163.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 111). Cancelled while BasicCegarLoop was constructing difference of abstraction (164223states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 206.5s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 174.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9558 SDtfs, 40364 SDslu, 3852 SDs, 0 SdLazy, 68077 SolverSat, 20783 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 143.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2302 GetRequests, 2247 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175348occurred in iteration=8, 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: 14.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 88917 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 6921 NumberOfCodeBlocks, 6921 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6904 ConstructedInterpolants, 0 QuantifiedInterpolants, 8961744 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2969 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 9046/9469 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown