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_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:23:08,862 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:23:08,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:23:08,880 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:23:08,880 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:23:08,881 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:23:08,883 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:23:08,885 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:23:08,886 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:23:08,887 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:23:08,889 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:23:08,889 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:23:08,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:23:08,892 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:23:08,896 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:23:08,897 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:23:08,900 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:23:08,902 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:23:08,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:23:08,916 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:23:08,920 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:23:08,922 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:23:08,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:23:08,949 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 16:23:08,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:23:08,977 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:23:08,978 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:23:08,978 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:23:08,979 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:23:08,979 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:23:08,979 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:23:08,979 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:23:08,980 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:23:08,980 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:23:08,980 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:23:08,980 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:23:08,981 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:23:08,981 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:23:08,981 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:23:08,981 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:23:08,981 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:23:08,982 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:23:08,982 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:23:08,982 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:23:08,982 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:23:08,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:23:08,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:23:08,983 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:23:08,983 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:23:08,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:23:08,984 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:23:08,984 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:23:09,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:23:09,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:23:09,060 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:23:09,062 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:23:09,062 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:23:09,063 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-10-24 16:23:09,137 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/370fb6b85/b5d48b5c700b4ba7a06548414137c7bd/FLAGc5e8ee6fa [2018-10-24 16:23:10,015 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:23:10,016 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label31_true-unreach-call.c [2018-10-24 16:23:10,052 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/370fb6b85/b5d48b5c700b4ba7a06548414137c7bd/FLAGc5e8ee6fa [2018-10-24 16:23:10,070 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/370fb6b85/b5d48b5c700b4ba7a06548414137c7bd [2018-10-24 16:23:10,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:23:10,086 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:23:10,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:23:10,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:23:10,092 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:23:10,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:23:10" (1/1) ... [2018-10-24 16:23:10,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb433d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:10, skipping insertion in model container [2018-10-24 16:23:10,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:23:10" (1/1) ... [2018-10-24 16:23:10,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:23:10,359 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:23:12,061 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:23:12,071 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:23:12,751 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:23:12,795 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:23:12,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12 WrapperNode [2018-10-24 16:23:12,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:23:12,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:23:12,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:23:12,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:23:12,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (1/1) ... [2018-10-24 16:23:12,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (1/1) ... [2018-10-24 16:23:13,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:23:13,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:23:13,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:23:13,699 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:23:13,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (1/1) ... [2018-10-24 16:23:13,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (1/1) ... [2018-10-24 16:23:13,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (1/1) ... [2018-10-24 16:23:13,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (1/1) ... [2018-10-24 16:23:13,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (1/1) ... [2018-10-24 16:23:13,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (1/1) ... [2018-10-24 16:23:14,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (1/1) ... [2018-10-24 16:23:14,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:23:14,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:23:14,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:23:14,169 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:23:14,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (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 16:23:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:23:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:23:14,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:23:28,330 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:23:28,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:23:28 BoogieIcfgContainer [2018-10-24 16:23:28,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:23:28,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:23:28,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:23:28,336 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:23:28,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:23:10" (1/3) ... [2018-10-24 16:23:28,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c8acb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:23:28, skipping insertion in model container [2018-10-24 16:23:28,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:12" (2/3) ... [2018-10-24 16:23:28,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c8acb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:23:28, skipping insertion in model container [2018-10-24 16:23:28,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:23:28" (3/3) ... [2018-10-24 16:23:28,342 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label31_true-unreach-call.c [2018-10-24 16:23:28,352 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:23:28,362 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:23:28,380 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:23:28,424 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:23:28,425 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:23:28,425 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:23:28,425 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:23:28,425 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:23:28,425 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:23:28,425 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:23:28,426 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:23:28,426 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:23:28,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:23:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 16:23:28,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:28,486 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:28,488 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:28,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:28,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1074275470, now seen corresponding path program 1 times [2018-10-24 16:23:28,497 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:28,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:28,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:28,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:28,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:28,958 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:23:28,975 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 16:23:28,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:28,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:23:28,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:29,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:29,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:29,006 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 16:23:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:23:44,889 INFO L93 Difference]: Finished difference Result 3993 states and 7498 transitions. [2018-10-24 16:23:44,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:23:44,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-10-24 16:23:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:23:44,937 INFO L225 Difference]: With dead ends: 3993 [2018-10-24 16:23:44,937 INFO L226 Difference]: Without dead ends: 2887 [2018-10-24 16:23:44,949 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 [2018-10-24 16:23:44,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2018-10-24 16:23:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1936. [2018-10-24 16:23:45,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1936 states. [2018-10-24 16:23:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 3550 transitions. [2018-10-24 16:23:45,121 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 3550 transitions. Word has length 41 [2018-10-24 16:23:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:45,121 INFO L481 AbstractCegarLoop]: Abstraction has 1936 states and 3550 transitions. [2018-10-24 16:23:45,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:23:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 3550 transitions. [2018-10-24 16:23:45,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 16:23:45,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:45,127 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, 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] [2018-10-24 16:23:45,128 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:45,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:45,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1737438858, now seen corresponding path program 1 times [2018-10-24 16:23:45,128 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:45,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:45,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:45,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:45,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:23:45,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:45,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:23:45,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:23:45,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:23:45,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:23:45,398 INFO L87 Difference]: Start difference. First operand 1936 states and 3550 transitions. Second operand 4 states. [2018-10-24 16:24:03,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:03,091 INFO L93 Difference]: Finished difference Result 7120 states and 13344 transitions. [2018-10-24 16:24:03,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:03,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-24 16:24:03,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:03,121 INFO L225 Difference]: With dead ends: 7120 [2018-10-24 16:24:03,121 INFO L226 Difference]: Without dead ends: 5186 [2018-10-24 16:24:03,126 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 16:24:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2018-10-24 16:24:03,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 3554. [2018-10-24 16:24:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2018-10-24 16:24:03,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 6248 transitions. [2018-10-24 16:24:03,211 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 6248 transitions. Word has length 110 [2018-10-24 16:24:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:03,211 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 6248 transitions. [2018-10-24 16:24:03,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 6248 transitions. [2018-10-24 16:24:03,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 16:24:03,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:03,215 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, 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] [2018-10-24 16:24:03,216 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:03,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:03,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2072624303, now seen corresponding path program 1 times [2018-10-24 16:24:03,216 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:03,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:03,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:03,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:03,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:03,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:03,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:24:03,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:03,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:03,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:03,529 INFO L87 Difference]: Start difference. First operand 3554 states and 6248 transitions. Second operand 4 states. [2018-10-24 16:24:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:15,727 INFO L93 Difference]: Finished difference Result 12674 states and 22438 transitions. [2018-10-24 16:24:15,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:15,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2018-10-24 16:24:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:15,779 INFO L225 Difference]: With dead ends: 12674 [2018-10-24 16:24:15,779 INFO L226 Difference]: Without dead ends: 9122 [2018-10-24 16:24:15,786 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 [2018-10-24 16:24:15,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9122 states. [2018-10-24 16:24:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9122 to 9115. [2018-10-24 16:24:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9115 states. [2018-10-24 16:24:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9115 states to 9115 states and 14199 transitions. [2018-10-24 16:24:15,957 INFO L78 Accepts]: Start accepts. Automaton has 9115 states and 14199 transitions. Word has length 123 [2018-10-24 16:24:15,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:15,958 INFO L481 AbstractCegarLoop]: Abstraction has 9115 states and 14199 transitions. [2018-10-24 16:24:15,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 9115 states and 14199 transitions. [2018-10-24 16:24:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 16:24:15,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:15,962 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, 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] [2018-10-24 16:24:15,962 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:15,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:15,963 INFO L82 PathProgramCache]: Analyzing trace with hash 301261888, now seen corresponding path program 1 times [2018-10-24 16:24:15,963 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:15,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:15,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:15,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:15,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:16,451 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:24:16,640 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:24:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:16,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:16,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:16,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:16,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:16,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:16,771 INFO L87 Difference]: Start difference. First operand 9115 states and 14199 transitions. Second operand 5 states. [2018-10-24 16:24:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:29,399 INFO L93 Difference]: Finished difference Result 29264 states and 45079 transitions. [2018-10-24 16:24:29,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:24:29,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-10-24 16:24:29,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:29,462 INFO L225 Difference]: With dead ends: 29264 [2018-10-24 16:24:29,463 INFO L226 Difference]: Without dead ends: 20151 [2018-10-24 16:24:29,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:24:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2018-10-24 16:24:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 20149. [2018-10-24 16:24:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20149 states. [2018-10-24 16:24:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20149 states to 20149 states and 28284 transitions. [2018-10-24 16:24:29,792 INFO L78 Accepts]: Start accepts. Automaton has 20149 states and 28284 transitions. Word has length 144 [2018-10-24 16:24:29,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:29,792 INFO L481 AbstractCegarLoop]: Abstraction has 20149 states and 28284 transitions. [2018-10-24 16:24:29,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:24:29,793 INFO L276 IsEmpty]: Start isEmpty. Operand 20149 states and 28284 transitions. [2018-10-24 16:24:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-24 16:24:29,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:29,797 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, 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] [2018-10-24 16:24:29,797 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:29,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:29,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1666609818, now seen corresponding path program 1 times [2018-10-24 16:24:29,799 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:29,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:29,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:29,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:29,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-24 16:24:30,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:24:30,217 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 16:24:30,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:30,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:24:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:30,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:24:30,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 16:24:30,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:30,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:30,402 INFO L87 Difference]: Start difference. First operand 20149 states and 28284 transitions. Second operand 5 states. [2018-10-24 16:24:47,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:47,981 INFO L93 Difference]: Finished difference Result 71841 states and 101590 transitions. [2018-10-24 16:24:47,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:24:47,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2018-10-24 16:24:47,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:48,100 INFO L225 Difference]: With dead ends: 71841 [2018-10-24 16:24:48,101 INFO L226 Difference]: Without dead ends: 52482 [2018-10-24 16:24:48,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:24:48,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52482 states. [2018-10-24 16:24:48,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52482 to 52448. [2018-10-24 16:24:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52448 states. [2018-10-24 16:24:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52448 states to 52448 states and 62491 transitions. [2018-10-24 16:24:48,783 INFO L78 Accepts]: Start accepts. Automaton has 52448 states and 62491 transitions. Word has length 167 [2018-10-24 16:24:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:48,783 INFO L481 AbstractCegarLoop]: Abstraction has 52448 states and 62491 transitions. [2018-10-24 16:24:48,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:24:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 52448 states and 62491 transitions. [2018-10-24 16:24:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-24 16:24:48,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:48,793 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, 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, 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] [2018-10-24 16:24:48,794 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:48,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:48,794 INFO L82 PathProgramCache]: Analyzing trace with hash -802390206, now seen corresponding path program 1 times [2018-10-24 16:24:48,794 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:48,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:48,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:48,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:48,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-24 16:24:49,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:49,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:49,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:49,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:49,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:49,093 INFO L87 Difference]: Start difference. First operand 52448 states and 62491 transitions. Second operand 5 states. [2018-10-24 16:25:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:07,560 INFO L93 Difference]: Finished difference Result 165087 states and 196876 transitions. [2018-10-24 16:25:07,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:25:07,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2018-10-24 16:25:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:07,772 INFO L225 Difference]: With dead ends: 165087 [2018-10-24 16:25:07,772 INFO L226 Difference]: Without dead ends: 113429 [2018-10-24 16:25:07,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:25:07,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113429 states. [2018-10-24 16:25:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113429 to 113259. [2018-10-24 16:25:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113259 states. [2018-10-24 16:25:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113259 states to 113259 states and 132702 transitions. [2018-10-24 16:25:09,426 INFO L78 Accepts]: Start accepts. Automaton has 113259 states and 132702 transitions. Word has length 307 [2018-10-24 16:25:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:09,426 INFO L481 AbstractCegarLoop]: Abstraction has 113259 states and 132702 transitions. [2018-10-24 16:25:09,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:25:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 113259 states and 132702 transitions. [2018-10-24 16:25:09,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-24 16:25:09,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:09,448 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, 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, 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] [2018-10-24 16:25:09,448 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:09,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:09,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1669246596, now seen corresponding path program 1 times [2018-10-24 16:25:09,449 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:09,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:09,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:09,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:09,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 362 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-10-24 16:25:09,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:09,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:09,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:09,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:09,791 INFO L87 Difference]: Start difference. First operand 113259 states and 132702 transitions. Second operand 4 states. [2018-10-24 16:25:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:20,909 INFO L93 Difference]: Finished difference Result 289604 states and 341524 transitions. [2018-10-24 16:25:20,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:20,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2018-10-24 16:25:20,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:21,137 INFO L225 Difference]: With dead ends: 289604 [2018-10-24 16:25:21,137 INFO L226 Difference]: Without dead ends: 177135 [2018-10-24 16:25:21,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 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 16:25:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177135 states. [2018-10-24 16:25:22,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177135 to 175509. [2018-10-24 16:25:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175509 states. [2018-10-24 16:25:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175509 states to 175509 states and 200034 transitions. [2018-10-24 16:25:22,637 INFO L78 Accepts]: Start accepts. Automaton has 175509 states and 200034 transitions. Word has length 365 [2018-10-24 16:25:22,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:22,637 INFO L481 AbstractCegarLoop]: Abstraction has 175509 states and 200034 transitions. [2018-10-24 16:25:22,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 175509 states and 200034 transitions. [2018-10-24 16:25:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-10-24 16:25:22,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:22,665 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:25:22,665 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:22,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:22,666 INFO L82 PathProgramCache]: Analyzing trace with hash 158609359, now seen corresponding path program 1 times [2018-10-24 16:25:22,666 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:22,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:22,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:22,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:22,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-10-24 16:25:23,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:23,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:25:23,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:25:23,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:25:23,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:25:23,024 INFO L87 Difference]: Start difference. First operand 175509 states and 200034 transitions. Second operand 3 states. [2018-10-24 16:25:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:31,796 INFO L93 Difference]: Finished difference Result 444781 states and 506737 transitions. [2018-10-24 16:25:31,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:25:31,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 397 [2018-10-24 16:25:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:32,211 INFO L225 Difference]: With dead ends: 444781 [2018-10-24 16:25:32,212 INFO L226 Difference]: Without dead ends: 270062 [2018-10-24 16:25:32,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 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 16:25:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270062 states. [2018-10-24 16:25:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270062 to 269272. [2018-10-24 16:25:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269272 states. [2018-10-24 16:25:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269272 states to 269272 states and 300224 transitions. [2018-10-24 16:25:35,956 INFO L78 Accepts]: Start accepts. Automaton has 269272 states and 300224 transitions. Word has length 397 [2018-10-24 16:25:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:35,957 INFO L481 AbstractCegarLoop]: Abstraction has 269272 states and 300224 transitions. [2018-10-24 16:25:35,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:25:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 269272 states and 300224 transitions. [2018-10-24 16:25:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2018-10-24 16:25:36,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:36,162 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:25:36,163 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:36,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:36,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1788133953, now seen corresponding path program 1 times [2018-10-24 16:25:36,163 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:36,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:36,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:36,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:36,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1662 backedges. 929 proven. 0 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2018-10-24 16:25:38,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:38,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:25:38,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:38,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:38,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:38,664 INFO L87 Difference]: Start difference. First operand 269272 states and 300224 transitions. Second operand 4 states. [2018-10-24 16:25:50,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:50,829 INFO L93 Difference]: Finished difference Result 540885 states and 603248 transitions. [2018-10-24 16:25:50,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:50,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1270 [2018-10-24 16:25:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:51,200 INFO L225 Difference]: With dead ends: 540885 [2018-10-24 16:25:51,200 INFO L226 Difference]: Without dead ends: 264505 [2018-10-24 16:25:51,326 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 [2018-10-24 16:25:51,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264505 states. [2018-10-24 16:26:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264505 to 257405. [2018-10-24 16:26:00,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257405 states. [2018-10-24 16:26:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257405 states to 257405 states and 275736 transitions. [2018-10-24 16:26:00,615 INFO L78 Accepts]: Start accepts. Automaton has 257405 states and 275736 transitions. Word has length 1270 [2018-10-24 16:26:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:00,616 INFO L481 AbstractCegarLoop]: Abstraction has 257405 states and 275736 transitions. [2018-10-24 16:26:00,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 257405 states and 275736 transitions. [2018-10-24 16:26:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1324 [2018-10-24 16:26:01,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:01,517 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:01,518 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:01,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:01,518 INFO L82 PathProgramCache]: Analyzing trace with hash 912402643, now seen corresponding path program 1 times [2018-10-24 16:26:01,518 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:01,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:01,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:01,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:01,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 1028 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2018-10-24 16:26:03,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:03,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:26:03,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:03,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:03,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:03,696 INFO L87 Difference]: Start difference. First operand 257405 states and 275736 transitions. Second operand 4 states. [2018-10-24 16:26:14,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:14,039 INFO L93 Difference]: Finished difference Result 505363 states and 541424 transitions. [2018-10-24 16:26:14,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:14,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1323 [2018-10-24 16:26:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:14,314 INFO L225 Difference]: With dead ends: 505363 [2018-10-24 16:26:14,315 INFO L226 Difference]: Without dead ends: 244007 [2018-10-24 16:26:14,411 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 [2018-10-24 16:26:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244007 states. [2018-10-24 16:26:16,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244007 to 240035. [2018-10-24 16:26:16,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240035 states. [2018-10-24 16:26:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240035 states to 240035 states and 253148 transitions. [2018-10-24 16:26:17,066 INFO L78 Accepts]: Start accepts. Automaton has 240035 states and 253148 transitions. Word has length 1323 [2018-10-24 16:26:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:17,067 INFO L481 AbstractCegarLoop]: Abstraction has 240035 states and 253148 transitions. [2018-10-24 16:26:17,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 240035 states and 253148 transitions. [2018-10-24 16:26:18,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1430 [2018-10-24 16:26:18,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:18,057 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:18,058 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:18,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:18,058 INFO L82 PathProgramCache]: Analyzing trace with hash 438575802, now seen corresponding path program 1 times [2018-10-24 16:26:18,059 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:18,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:18,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:18,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:18,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:18,844 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 16:26:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1787 backedges. 1078 proven. 0 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2018-10-24 16:26:20,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:20,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:26:20,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:20,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:20,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:20,195 INFO L87 Difference]: Start difference. First operand 240035 states and 253148 transitions. Second operand 4 states. [2018-10-24 16:26:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:28,351 INFO L93 Difference]: Finished difference Result 490314 states and 516901 transitions. [2018-10-24 16:26:28,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:28,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1429 [2018-10-24 16:26:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:28,617 INFO L225 Difference]: With dead ends: 490314 [2018-10-24 16:26:28,617 INFO L226 Difference]: Without dead ends: 226604 [2018-10-24 16:26:28,713 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 [2018-10-24 16:26:28,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226604 states. [2018-10-24 16:26:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226604 to 216357. [2018-10-24 16:26:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216357 states. [2018-10-24 16:26:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216357 states to 216357 states and 227562 transitions. [2018-10-24 16:26:31,360 INFO L78 Accepts]: Start accepts. Automaton has 216357 states and 227562 transitions. Word has length 1429 [2018-10-24 16:26:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:31,361 INFO L481 AbstractCegarLoop]: Abstraction has 216357 states and 227562 transitions. [2018-10-24 16:26:31,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:31,362 INFO L276 IsEmpty]: Start isEmpty. Operand 216357 states and 227562 transitions. [2018-10-24 16:26:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1609 [2018-10-24 16:26:31,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:31,546 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:26:31,547 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:31,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:31,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2113052933, now seen corresponding path program 1 times [2018-10-24 16:26:31,548 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:31,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:31,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:31,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:31,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:32,407 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 16:26:33,292 WARN L179 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:26:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2733 backedges. 1664 proven. 12 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2018-10-24 16:26:35,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:26:35,466 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 16:26:35,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:35,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:26:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2733 backedges. 2055 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2018-10-24 16:26:37,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:26:37,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 16:26:37,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:26:37,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:26:37,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:26:37,136 INFO L87 Difference]: Start difference. First operand 216357 states and 227562 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 16:26:53,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:26:53,239 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:26:53,244 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:26:53,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:26:53 BoogieIcfgContainer [2018-10-24 16:26:53,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:26:53,245 INFO L168 Benchmark]: Toolchain (without parser) took 223160.31 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:26:53,246 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:26:53,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2709.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:26:53,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 901.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -993.5 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:26:53,248 INFO L168 Benchmark]: Boogie Preprocessor took 469.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:26:53,249 INFO L168 Benchmark]: RCFGBuilder took 14162.06 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 259.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -6.0 MB). Peak memory consumption was 615.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:26:53,250 INFO L168 Benchmark]: TraceAbstraction took 204912.26 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -121.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 16:26:53,256 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2709.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 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 901.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -993.5 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 469.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14162.06 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 259.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -6.0 MB). Peak memory consumption was 615.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204912.26 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -121.2 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (216357states) and FLOYD_HOARE automaton (currently 9 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (276420 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 204.8s OverallTime, 12 OverallIterations, 8 TraceHistogramMax, 163.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8738 SDtfs, 39057 SDslu, 2968 SDs, 0 SdLazy, 61625 SolverSat, 19093 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 130.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1844 GetRequests, 1795 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=269272occurred 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: 22.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 26531 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 9059 NumberOfCodeBlocks, 9059 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 9045 ConstructedInterpolants, 0 QuantifiedInterpolants, 19720740 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2098 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 11927/11945 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown