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/Problem18_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:37:04,042 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:37:04,045 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:37:04,061 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:37:04,061 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:37:04,062 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:37:04,063 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:37:04,065 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:37:04,068 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:37:04,069 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:37:04,070 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:37:04,070 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:37:04,071 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:37:04,072 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:37:04,073 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:37:04,074 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:37:04,075 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:37:04,077 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:37:04,079 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:37:04,081 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:37:04,082 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:37:04,084 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:37:04,086 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 18:37:04,095 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:37:04,129 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:37:04,130 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:37:04,131 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:37:04,131 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:37:04,133 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:37:04,133 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:37:04,133 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:37:04,133 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:37:04,134 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:37:04,134 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:37:04,134 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:37:04,134 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:37:04,134 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:37:04,135 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:37:04,136 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:37:04,136 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:37:04,136 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:37:04,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:37:04,136 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:37:04,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:37:04,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:37:04,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:37:04,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:37:04,137 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:37:04,138 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:37:04,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:37:04,139 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:37:04,139 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:37:04,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:37:04,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:37:04,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:37:04,224 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:37:04,225 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:37:04,226 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label52_false-unreach-call.c [2018-10-23 18:37:04,282 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/98ccd0fbc/1b04e27c8b2d4992a277debbbb6d78b8/FLAGa02f08ddc [2018-10-23 18:37:05,066 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:37:05,067 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label52_false-unreach-call.c [2018-10-23 18:37:05,100 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/98ccd0fbc/1b04e27c8b2d4992a277debbbb6d78b8/FLAGa02f08ddc [2018-10-23 18:37:05,119 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/98ccd0fbc/1b04e27c8b2d4992a277debbbb6d78b8 [2018-10-23 18:37:05,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:37:05,134 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:37:05,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:37:05,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:37:05,140 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:37:05,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:37:05" (1/1) ... [2018-10-23 18:37:05,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e468d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:05, skipping insertion in model container [2018-10-23 18:37:05,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:37:05" (1/1) ... [2018-10-23 18:37:05,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:37:05,286 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:37:06,246 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:37:06,251 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:37:06,718 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:37:06,751 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:37:06,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06 WrapperNode [2018-10-23 18:37:06,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:37:06,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:37:06,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:37:06,754 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:37:06,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... [2018-10-23 18:37:06,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... [2018-10-23 18:37:07,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:37:07,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:37:07,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:37:07,291 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:37:07,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... [2018-10-23 18:37:07,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... [2018-10-23 18:37:07,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... [2018-10-23 18:37:07,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... [2018-10-23 18:37:07,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... [2018-10-23 18:37:07,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... [2018-10-23 18:37:07,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... [2018-10-23 18:37:07,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:37:07,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:37:07,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:37:07,597 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:37:07,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:37:07,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:37:07,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:37:07,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:37:14,790 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:37:14,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:37:14 BoogieIcfgContainer [2018-10-23 18:37:14,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:37:14,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:37:14,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:37:14,796 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:37:14,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:37:05" (1/3) ... [2018-10-23 18:37:14,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cab628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:37:14, skipping insertion in model container [2018-10-23 18:37:14,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:37:06" (2/3) ... [2018-10-23 18:37:14,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cab628 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:37:14, skipping insertion in model container [2018-10-23 18:37:14,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:37:14" (3/3) ... [2018-10-23 18:37:14,802 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label52_false-unreach-call.c [2018-10-23 18:37:14,815 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:37:14,832 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:37:14,852 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:37:14,912 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:37:14,913 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:37:14,913 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:37:14,913 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:37:14,913 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:37:14,914 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:37:14,914 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:37:14,914 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:37:14,914 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:37:14,964 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-23 18:37:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-23 18:37:14,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:37:14,976 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:37:14,979 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:37:14,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:37:14,985 INFO L82 PathProgramCache]: Analyzing trace with hash -809652462, now seen corresponding path program 1 times [2018-10-23 18:37:14,987 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:37:14,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:37:15,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:15,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:15,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:15,362 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 18:37:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:37:15,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:37:15,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:37:15,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:37:15,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:37:15,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:37:15,459 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-23 18:37:25,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:37:25,816 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-23 18:37:25,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:37:25,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-10-23 18:37:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:37:25,863 INFO L225 Difference]: With dead ends: 2902 [2018-10-23 18:37:25,864 INFO L226 Difference]: Without dead ends: 2137 [2018-10-23 18:37:25,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:37:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-23 18:37:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-23 18:37:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-23 18:37:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3734 transitions. [2018-10-23 18:37:26,041 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3734 transitions. Word has length 17 [2018-10-23 18:37:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:37:26,042 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3734 transitions. [2018-10-23 18:37:26,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:37:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3734 transitions. [2018-10-23 18:37:26,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 18:37:26,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:37:26,048 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:37:26,049 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:37:26,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:37:26,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1345110262, now seen corresponding path program 1 times [2018-10-23 18:37:26,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:37:26,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:37:26,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:26,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:26,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:37:26,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:37:26,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:37:26,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:37:26,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:37:26,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:37:26,443 INFO L87 Difference]: Start difference. First operand 2137 states and 3734 transitions. Second operand 4 states. [2018-10-23 18:37:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:37:37,184 INFO L93 Difference]: Finished difference Result 8418 states and 14808 transitions. [2018-10-23 18:37:37,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:37:37,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2018-10-23 18:37:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:37:37,218 INFO L225 Difference]: With dead ends: 8418 [2018-10-23 18:37:37,218 INFO L226 Difference]: Without dead ends: 6283 [2018-10-23 18:37:37,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:37:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6283 states. [2018-10-23 18:37:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6283 to 6283. [2018-10-23 18:37:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6283 states. [2018-10-23 18:37:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 9360 transitions. [2018-10-23 18:37:37,359 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 9360 transitions. Word has length 102 [2018-10-23 18:37:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:37:37,361 INFO L481 AbstractCegarLoop]: Abstraction has 6283 states and 9360 transitions. [2018-10-23 18:37:37,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:37:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 9360 transitions. [2018-10-23 18:37:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-23 18:37:37,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:37:37,376 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:37:37,377 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:37:37,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:37:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2002561737, now seen corresponding path program 1 times [2018-10-23 18:37:37,380 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:37:37,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:37:37,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:37,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:37,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:37,755 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-23 18:37:37,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:37:37,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:37:37,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:37:37,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:37:37,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:37:37,757 INFO L87 Difference]: Start difference. First operand 6283 states and 9360 transitions. Second operand 4 states. [2018-10-23 18:37:48,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:37:48,113 INFO L93 Difference]: Finished difference Result 23636 states and 35291 transitions. [2018-10-23 18:37:48,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:37:48,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-10-23 18:37:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:37:48,194 INFO L225 Difference]: With dead ends: 23636 [2018-10-23 18:37:48,194 INFO L226 Difference]: Without dead ends: 17355 [2018-10-23 18:37:48,208 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 [2018-10-23 18:37:48,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17355 states. [2018-10-23 18:37:48,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17355 to 12502. [2018-10-23 18:37:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12502 states. [2018-10-23 18:37:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12502 states to 12502 states and 16539 transitions. [2018-10-23 18:37:48,493 INFO L78 Accepts]: Start accepts. Automaton has 12502 states and 16539 transitions. Word has length 157 [2018-10-23 18:37:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:37:48,494 INFO L481 AbstractCegarLoop]: Abstraction has 12502 states and 16539 transitions. [2018-10-23 18:37:48,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:37:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 12502 states and 16539 transitions. [2018-10-23 18:37:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-23 18:37:48,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:37:48,501 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:37:48,501 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:37:48,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:37:48,502 INFO L82 PathProgramCache]: Analyzing trace with hash 479069292, now seen corresponding path program 1 times [2018-10-23 18:37:48,502 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:37:48,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:37:48,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:48,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:48,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:49,288 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-23 18:37:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-23 18:37:49,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:37:49,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:37:49,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:37:49,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:37:49,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:37:49,499 INFO L87 Difference]: Start difference. First operand 12502 states and 16539 transitions. Second operand 5 states. [2018-10-23 18:37:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:37:58,020 INFO L93 Difference]: Finished difference Result 36058 states and 47103 transitions. [2018-10-23 18:37:58,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:37:58,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-10-23 18:37:58,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:37:58,070 INFO L225 Difference]: With dead ends: 36058 [2018-10-23 18:37:58,071 INFO L226 Difference]: Without dead ends: 23558 [2018-10-23 18:37:58,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:37:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23558 states. [2018-10-23 18:37:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23558 to 20103. [2018-10-23 18:37:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20103 states. [2018-10-23 18:37:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20103 states to 20103 states and 24657 transitions. [2018-10-23 18:37:58,354 INFO L78 Accepts]: Start accepts. Automaton has 20103 states and 24657 transitions. Word has length 227 [2018-10-23 18:37:58,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:37:58,354 INFO L481 AbstractCegarLoop]: Abstraction has 20103 states and 24657 transitions. [2018-10-23 18:37:58,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:37:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand 20103 states and 24657 transitions. [2018-10-23 18:37:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-23 18:37:58,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:37:58,363 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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] [2018-10-23 18:37:58,363 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:37:58,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:37:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash -487714139, now seen corresponding path program 1 times [2018-10-23 18:37:58,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:37:58,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:37:58,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:58,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:58,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:37:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 285 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-23 18:37:59,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:37:59,046 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:37:59,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:37:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:37:59,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:37:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2018-10-23 18:37:59,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:37:59,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:37:59,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:37:59,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:37:59,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:37:59,385 INFO L87 Difference]: Start difference. First operand 20103 states and 24657 transitions. Second operand 6 states. [2018-10-23 18:38:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:38:13,550 INFO L93 Difference]: Finished difference Result 58186 states and 71459 transitions. [2018-10-23 18:38:13,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 18:38:13,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 410 [2018-10-23 18:38:13,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:38:13,625 INFO L225 Difference]: With dead ends: 58186 [2018-10-23 18:38:13,625 INFO L226 Difference]: Without dead ends: 30434 [2018-10-23 18:38:13,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 412 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:38:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30434 states. [2018-10-23 18:38:14,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30434 to 26973. [2018-10-23 18:38:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26973 states. [2018-10-23 18:38:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26973 states to 26973 states and 29360 transitions. [2018-10-23 18:38:14,222 INFO L78 Accepts]: Start accepts. Automaton has 26973 states and 29360 transitions. Word has length 410 [2018-10-23 18:38:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:38:14,223 INFO L481 AbstractCegarLoop]: Abstraction has 26973 states and 29360 transitions. [2018-10-23 18:38:14,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:38:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 26973 states and 29360 transitions. [2018-10-23 18:38:14,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2018-10-23 18:38:14,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:14,259 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:38:14,259 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:14,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:14,260 INFO L82 PathProgramCache]: Analyzing trace with hash 801439540, now seen corresponding path program 1 times [2018-10-23 18:38:14,260 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:14,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:14,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:14,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:14,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:15,458 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 18:38:15,905 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-23 18:38:16,459 WARN L179 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-23 18:38:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 30 proven. 419 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-23 18:38:18,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:38:18,387 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:38:18,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:18,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:38:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2018-10-23 18:38:19,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:38:19,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-23 18:38:19,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 18:38:19,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 18:38:19,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:38:19,088 INFO L87 Difference]: Start difference. First operand 26973 states and 29360 transitions. Second operand 9 states. [2018-10-23 18:38:37,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:38:37,554 INFO L93 Difference]: Finished difference Result 117806 states and 130992 transitions. [2018-10-23 18:38:37,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 18:38:37,555 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 941 [2018-10-23 18:38:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:38:37,709 INFO L225 Difference]: With dead ends: 117806 [2018-10-23 18:38:37,710 INFO L226 Difference]: Without dead ends: 91526 [2018-10-23 18:38:37,755 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 950 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2018-10-23 18:38:37,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91526 states. [2018-10-23 18:38:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91526 to 35265. [2018-10-23 18:38:38,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35265 states. [2018-10-23 18:38:38,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35265 states to 35265 states and 38707 transitions. [2018-10-23 18:38:38,891 INFO L78 Accepts]: Start accepts. Automaton has 35265 states and 38707 transitions. Word has length 941 [2018-10-23 18:38:38,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:38:38,893 INFO L481 AbstractCegarLoop]: Abstraction has 35265 states and 38707 transitions. [2018-10-23 18:38:38,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 18:38:38,893 INFO L276 IsEmpty]: Start isEmpty. Operand 35265 states and 38707 transitions. [2018-10-23 18:38:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1164 [2018-10-23 18:38:38,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:38,957 INFO L375 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:38:38,958 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:38,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:38,958 INFO L82 PathProgramCache]: Analyzing trace with hash -25764603, now seen corresponding path program 1 times [2018-10-23 18:38:38,958 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:38,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:38,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:38,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:38,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 923 proven. 0 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-10-23 18:38:40,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:38:40,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:38:40,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:38:40,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:38:40,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:40,389 INFO L87 Difference]: Start difference. First operand 35265 states and 38707 transitions. Second operand 4 states. [2018-10-23 18:38:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:38:45,829 INFO L93 Difference]: Finished difference Result 97482 states and 108238 transitions. [2018-10-23 18:38:45,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:38:45,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1163 [2018-10-23 18:38:45,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:38:45,905 INFO L225 Difference]: With dead ends: 97482 [2018-10-23 18:38:45,905 INFO L226 Difference]: Without dead ends: 62910 [2018-10-23 18:38:45,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:45,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62910 states. [2018-10-23 18:38:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62910 to 62910. [2018-10-23 18:38:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62910 states. [2018-10-23 18:38:46,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62910 states to 62910 states and 67813 transitions. [2018-10-23 18:38:46,679 INFO L78 Accepts]: Start accepts. Automaton has 62910 states and 67813 transitions. Word has length 1163 [2018-10-23 18:38:46,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:38:46,681 INFO L481 AbstractCegarLoop]: Abstraction has 62910 states and 67813 transitions. [2018-10-23 18:38:46,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:38:46,681 INFO L276 IsEmpty]: Start isEmpty. Operand 62910 states and 67813 transitions. [2018-10-23 18:38:46,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1178 [2018-10-23 18:38:46,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:46,707 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:38:46,707 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:46,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:46,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1119157346, now seen corresponding path program 1 times [2018-10-23 18:38:46,708 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:46,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:46,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:46,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:46,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:47,725 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 18:38:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 949 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2018-10-23 18:38:48,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:38:48,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:38:48,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:38:48,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:38:48,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:48,657 INFO L87 Difference]: Start difference. First operand 62910 states and 67813 transitions. Second operand 4 states. [2018-10-23 18:38:54,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:38:54,046 INFO L93 Difference]: Finished difference Result 160368 states and 173172 transitions. [2018-10-23 18:38:54,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:38:54,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1177 [2018-10-23 18:38:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:38:54,164 INFO L225 Difference]: With dead ends: 160368 [2018-10-23 18:38:54,165 INFO L226 Difference]: Without dead ends: 98151 [2018-10-23 18:38:54,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98151 states. [2018-10-23 18:38:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98151 to 96769. [2018-10-23 18:38:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96769 states. [2018-10-23 18:38:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96769 states to 96769 states and 103125 transitions. [2018-10-23 18:38:55,176 INFO L78 Accepts]: Start accepts. Automaton has 96769 states and 103125 transitions. Word has length 1177 [2018-10-23 18:38:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:38:55,177 INFO L481 AbstractCegarLoop]: Abstraction has 96769 states and 103125 transitions. [2018-10-23 18:38:55,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:38:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 96769 states and 103125 transitions. [2018-10-23 18:38:55,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1214 [2018-10-23 18:38:55,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:38:55,204 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:38:55,204 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:38:55,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:38:55,204 INFO L82 PathProgramCache]: Analyzing trace with hash 941859746, now seen corresponding path program 1 times [2018-10-23 18:38:55,205 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:38:55,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:38:55,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:55,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:38:55,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:38:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:38:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 1020 proven. 0 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2018-10-23 18:38:56,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:38:56,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:38:56,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:38:56,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:38:56,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:38:56,732 INFO L87 Difference]: Start difference. First operand 96769 states and 103125 transitions. Second operand 4 states. [2018-10-23 18:39:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:39:02,020 INFO L93 Difference]: Finished difference Result 196991 states and 209761 transitions. [2018-10-23 18:39:02,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:39:02,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1213 [2018-10-23 18:39:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:39:02,119 INFO L225 Difference]: With dead ends: 196991 [2018-10-23 18:39:02,119 INFO L226 Difference]: Without dead ends: 100915 [2018-10-23 18:39:02,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100915 states. [2018-10-23 18:39:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100915 to 99533. [2018-10-23 18:39:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99533 states. [2018-10-23 18:39:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99533 states to 99533 states and 104529 transitions. [2018-10-23 18:39:03,459 INFO L78 Accepts]: Start accepts. Automaton has 99533 states and 104529 transitions. Word has length 1213 [2018-10-23 18:39:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:39:03,460 INFO L481 AbstractCegarLoop]: Abstraction has 99533 states and 104529 transitions. [2018-10-23 18:39:03,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:39:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 99533 states and 104529 transitions. [2018-10-23 18:39:03,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1355 [2018-10-23 18:39:03,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:03,489 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:39:03,489 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:03,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:03,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1638611681, now seen corresponding path program 1 times [2018-10-23 18:39:03,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:03,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:03,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:03,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:03,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1793 backedges. 781 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2018-10-23 18:39:05,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:39:05,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:39:05,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:39:05,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:39:05,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:05,449 INFO L87 Difference]: Start difference. First operand 99533 states and 104529 transitions. Second operand 4 states. [2018-10-23 18:39:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:39:10,306 INFO L93 Difference]: Finished difference Result 212193 states and 222875 transitions. [2018-10-23 18:39:10,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:39:10,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1354 [2018-10-23 18:39:10,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:39:10,432 INFO L225 Difference]: With dead ends: 212193 [2018-10-23 18:39:10,432 INFO L226 Difference]: Without dead ends: 113353 [2018-10-23 18:39:10,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113353 states. [2018-10-23 18:39:11,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113353 to 111971. [2018-10-23 18:39:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111971 states. [2018-10-23 18:39:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111971 states to 111971 states and 116643 transitions. [2018-10-23 18:39:11,388 INFO L78 Accepts]: Start accepts. Automaton has 111971 states and 116643 transitions. Word has length 1354 [2018-10-23 18:39:11,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:39:11,389 INFO L481 AbstractCegarLoop]: Abstraction has 111971 states and 116643 transitions. [2018-10-23 18:39:11,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:39:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 111971 states and 116643 transitions. [2018-10-23 18:39:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1460 [2018-10-23 18:39:11,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:11,420 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:39:11,420 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:11,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:11,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1015955712, now seen corresponding path program 1 times [2018-10-23 18:39:11,421 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:11,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:11,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:11,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:11,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:13,082 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-23 18:39:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2847 backedges. 1479 proven. 1047 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-23 18:39:16,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:39:16,935 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:39:16,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:17,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:39:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2847 backedges. 1780 proven. 0 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2018-10-23 18:39:18,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:39:18,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-23 18:39:18,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 18:39:18,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 18:39:18,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:39:18,729 INFO L87 Difference]: Start difference. First operand 111971 states and 116643 transitions. Second operand 12 states. [2018-10-23 18:39:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:39:36,227 INFO L93 Difference]: Finished difference Result 260543 states and 271419 transitions. [2018-10-23 18:39:36,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-23 18:39:36,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1459 [2018-10-23 18:39:36,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:39:36,373 INFO L225 Difference]: With dead ends: 260543 [2018-10-23 18:39:36,374 INFO L226 Difference]: Without dead ends: 149265 [2018-10-23 18:39:36,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1502 GetRequests, 1472 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2018-10-23 18:39:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149265 states. [2018-10-23 18:39:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149265 to 105056. [2018-10-23 18:39:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105056 states. [2018-10-23 18:39:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105056 states to 105056 states and 107945 transitions. [2018-10-23 18:39:37,579 INFO L78 Accepts]: Start accepts. Automaton has 105056 states and 107945 transitions. Word has length 1459 [2018-10-23 18:39:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:39:37,580 INFO L481 AbstractCegarLoop]: Abstraction has 105056 states and 107945 transitions. [2018-10-23 18:39:37,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 18:39:37,580 INFO L276 IsEmpty]: Start isEmpty. Operand 105056 states and 107945 transitions. [2018-10-23 18:39:37,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1484 [2018-10-23 18:39:37,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:37,612 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:39:37,612 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:37,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:37,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1795957083, now seen corresponding path program 1 times [2018-10-23 18:39:37,613 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:37,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:37,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:37,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:37,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2018-10-23 18:39:39,905 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:39:39,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:39:39,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:39:39,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:39:39,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:39,907 INFO L87 Difference]: Start difference. First operand 105056 states and 107945 transitions. Second operand 4 states. [2018-10-23 18:39:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:39:44,763 INFO L93 Difference]: Finished difference Result 209419 states and 215196 transitions. [2018-10-23 18:39:44,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:39:44,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1483 [2018-10-23 18:39:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:39:44,842 INFO L225 Difference]: With dead ends: 209419 [2018-10-23 18:39:44,843 INFO L226 Difference]: Without dead ends: 96056 [2018-10-23 18:39:44,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:39:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96056 states. [2018-10-23 18:39:45,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96056 to 95365. [2018-10-23 18:39:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95365 states. [2018-10-23 18:39:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95365 states to 95365 states and 97284 transitions. [2018-10-23 18:39:45,698 INFO L78 Accepts]: Start accepts. Automaton has 95365 states and 97284 transitions. Word has length 1483 [2018-10-23 18:39:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:39:45,699 INFO L481 AbstractCegarLoop]: Abstraction has 95365 states and 97284 transitions. [2018-10-23 18:39:45,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:39:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 95365 states and 97284 transitions. [2018-10-23 18:39:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1547 [2018-10-23 18:39:45,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:39:45,725 INFO L375 BasicCegarLoop]: trace histogram [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, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:39:45,725 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:39:45,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:39:45,726 INFO L82 PathProgramCache]: Analyzing trace with hash 49121253, now seen corresponding path program 1 times [2018-10-23 18:39:45,726 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:39:45,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:39:45,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:45,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:45,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:39:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 1700 proven. 70 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2018-10-23 18:39:47,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:39:47,840 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 [2018-10-23 18:39:47,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:39:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:39:48,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:39:48,548 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 19 [2018-10-23 18:39:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 1877 trivial. 0 not checked. [2018-10-23 18:39:50,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:39:50,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 18:39:50,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:39:50,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:39:50,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:39:50,268 INFO L87 Difference]: Start difference. First operand 95365 states and 97284 transitions. Second operand 5 states. [2018-10-23 18:40:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:20,713 INFO L93 Difference]: Finished difference Result 205929 states and 210139 transitions. [2018-10-23 18:40:20,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:40:20,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1546 [2018-10-23 18:40:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:20,823 INFO L225 Difference]: With dead ends: 205929 [2018-10-23 18:40:20,824 INFO L226 Difference]: Without dead ends: 111257 [2018-10-23 18:40:20,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1554 GetRequests, 1548 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:40:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111257 states. [2018-10-23 18:40:21,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111257 to 105038. [2018-10-23 18:40:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105038 states. [2018-10-23 18:40:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105038 states to 105038 states and 106888 transitions. [2018-10-23 18:40:21,751 INFO L78 Accepts]: Start accepts. Automaton has 105038 states and 106888 transitions. Word has length 1546 [2018-10-23 18:40:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:21,752 INFO L481 AbstractCegarLoop]: Abstraction has 105038 states and 106888 transitions. [2018-10-23 18:40:21,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:40:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand 105038 states and 106888 transitions. [2018-10-23 18:40:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2018-10-23 18:40:21,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:21,799 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 18:40:21,799 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:21,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:21,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1113072581, now seen corresponding path program 1 times [2018-10-23 18:40:21,800 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:21,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:21,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:21,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:21,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3392 backedges. 2161 proven. 0 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2018-10-23 18:40:24,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:24,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:40:24,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:24,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:24,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:24,382 INFO L87 Difference]: Start difference. First operand 105038 states and 106888 transitions. Second operand 4 states. [2018-10-23 18:40:28,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:28,771 INFO L93 Difference]: Finished difference Result 208692 states and 212380 transitions. [2018-10-23 18:40:28,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:40:28,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1688 [2018-10-23 18:40:28,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:28,875 INFO L225 Difference]: With dead ends: 208692 [2018-10-23 18:40:28,875 INFO L226 Difference]: Without dead ends: 104347 [2018-10-23 18:40:28,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104347 states. [2018-10-23 18:40:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104347 to 103656. [2018-10-23 18:40:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103656 states. [2018-10-23 18:40:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103656 states to 103656 states and 105132 transitions. [2018-10-23 18:40:30,344 INFO L78 Accepts]: Start accepts. Automaton has 103656 states and 105132 transitions. Word has length 1688 [2018-10-23 18:40:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:30,345 INFO L481 AbstractCegarLoop]: Abstraction has 103656 states and 105132 transitions. [2018-10-23 18:40:30,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:40:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 103656 states and 105132 transitions. [2018-10-23 18:40:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1707 [2018-10-23 18:40:30,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:30,394 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 18:40:30,395 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:30,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:30,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1345634122, now seen corresponding path program 1 times [2018-10-23 18:40:30,395 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:30,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:30,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:30,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:30,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2801 backedges. 2213 proven. 0 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2018-10-23 18:40:35,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:35,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:40:35,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:35,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:35,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:35,099 INFO L87 Difference]: Start difference. First operand 103656 states and 105132 transitions. Second operand 4 states. [2018-10-23 18:40:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:40,173 INFO L93 Difference]: Finished difference Result 225967 states and 229251 transitions. [2018-10-23 18:40:40,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:40:40,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1706 [2018-10-23 18:40:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:40,298 INFO L225 Difference]: With dead ends: 225967 [2018-10-23 18:40:40,298 INFO L226 Difference]: Without dead ends: 122312 [2018-10-23 18:40:40,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:40,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122312 states. [2018-10-23 18:40:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122312 to 118857. [2018-10-23 18:40:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118857 states. [2018-10-23 18:40:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118857 states to 118857 states and 120394 transitions. [2018-10-23 18:40:41,531 INFO L78 Accepts]: Start accepts. Automaton has 118857 states and 120394 transitions. Word has length 1706 [2018-10-23 18:40:41,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:41,532 INFO L481 AbstractCegarLoop]: Abstraction has 118857 states and 120394 transitions. [2018-10-23 18:40:41,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:40:41,532 INFO L276 IsEmpty]: Start isEmpty. Operand 118857 states and 120394 transitions. [2018-10-23 18:40:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2018-10-23 18:40:41,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:41,569 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:40:41,569 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:41,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:41,569 INFO L82 PathProgramCache]: Analyzing trace with hash 365289868, now seen corresponding path program 1 times [2018-10-23 18:40:41,570 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:41,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:41,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:41,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:41,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 2791 trivial. 0 not checked. [2018-10-23 18:40:43,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:43,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:40:43,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:40:43,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:40:43,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:40:43,692 INFO L87 Difference]: Start difference. First operand 118857 states and 120394 transitions. Second operand 3 states. [2018-10-23 18:40:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:40:47,135 INFO L93 Difference]: Finished difference Result 238403 states and 241493 transitions. [2018-10-23 18:40:47,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:40:47,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1723 [2018-10-23 18:40:47,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:40:47,248 INFO L225 Difference]: With dead ends: 238403 [2018-10-23 18:40:47,248 INFO L226 Difference]: Without dead ends: 119547 [2018-10-23 18:40:47,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:40:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119547 states. [2018-10-23 18:40:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119547 to 106418. [2018-10-23 18:40:48,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106418 states. [2018-10-23 18:40:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106418 states to 106418 states and 107704 transitions. [2018-10-23 18:40:48,536 INFO L78 Accepts]: Start accepts. Automaton has 106418 states and 107704 transitions. Word has length 1723 [2018-10-23 18:40:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:40:48,537 INFO L481 AbstractCegarLoop]: Abstraction has 106418 states and 107704 transitions. [2018-10-23 18:40:48,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:40:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 106418 states and 107704 transitions. [2018-10-23 18:40:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1728 [2018-10-23 18:40:48,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:40:48,567 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:40:48,567 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:40:48,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:40:48,568 INFO L82 PathProgramCache]: Analyzing trace with hash 166708093, now seen corresponding path program 1 times [2018-10-23 18:40:48,568 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:40:48,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:40:48,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:48,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:40:48,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:40:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:40:49,585 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 Received shutdown request... [2018-10-23 18:40:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3615 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 2919 trivial. 0 not checked. [2018-10-23 18:40:50,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:40:50,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:40:50,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:40:50,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:40:50,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:40:50,994 INFO L87 Difference]: Start difference. First operand 106418 states and 107704 transitions. Second operand 4 states. [2018-10-23 18:40:50,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 18:40:50,995 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:40:51,000 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:40:51,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:40:51 BoogieIcfgContainer [2018-10-23 18:40:51,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:40:51,002 INFO L168 Benchmark]: Toolchain (without parser) took 225869.58 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-23 18:40:51,004 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:40:51,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1618.09 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:40:51,005 INFO L168 Benchmark]: Boogie Procedure Inliner took 536.84 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.3 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -897.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:40:51,007 INFO L168 Benchmark]: Boogie Preprocessor took 306.07 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2018-10-23 18:40:51,007 INFO L168 Benchmark]: RCFGBuilder took 7194.34 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 533.2 MB). Peak memory consumption was 533.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:40:51,008 INFO L168 Benchmark]: TraceAbstraction took 216208.70 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 513.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:40:51,014 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1618.09 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 536.84 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 730.3 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -897.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 306.07 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7194.34 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 533.2 MB). Peak memory consumption was 533.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216208.70 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.6 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 513.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 57). Cancelled while BasicCegarLoop was constructing difference of abstraction (106418states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 216.0s OverallTime, 17 OverallIterations, 9 TraceHistogramMax, 161.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7609 SDtfs, 42817 SDslu, 1653 SDs, 0 SdLazy, 89144 SolverSat, 13789 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 128.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4511 GetRequests, 4407 SyntacticMatches, 20 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118857occurred in iteration=15, 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: 13.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 140570 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 22449 NumberOfCodeBlocks, 22449 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 22428 ConstructedInterpolants, 86 QuantifiedInterpolants, 58081955 SizeOfPredicates, 3 NumberOfNonLiveVariables, 5093 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 21 InterpolantComputations, 17 PerfectInterpolantSequences, 32389/33929 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown