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/Problem12_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:10:26,066 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:10:26,068 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:10:26,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:10:26,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:10:26,087 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:10:26,089 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:10:26,091 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:10:26,092 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:10:26,093 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:10:26,096 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:10:26,097 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:10:26,098 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:10:26,099 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:10:26,100 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:10:26,103 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:10:26,104 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:10:26,114 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:10:26,118 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:10:26,119 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:10:26,120 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:10:26,121 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:10:26,124 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:10:26,139 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 20:10:26,167 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:10:26,168 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:10:26,169 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:10:26,170 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:10:26,170 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:10:26,171 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:10:26,171 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:10:26,171 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:10:26,171 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:10:26,171 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:10:26,172 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:10:26,173 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:10:26,173 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:10:26,173 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:10:26,173 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:10:26,173 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:10:26,174 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:10:26,175 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:10:26,175 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:10:26,175 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:10:26,175 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:10:26,175 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:10:26,176 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:10:26,176 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:10:26,176 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:10:26,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:10:26,176 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:10:26,176 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:10:26,220 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:10:26,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:10:26,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:10:26,242 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:10:26,243 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:10:26,243 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-10-23 20:10:26,311 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6948f3dcb/8d8c6171ab354bbd9d2ccf4f2cc37f5d/FLAG0abc617a1 [2018-10-23 20:10:27,107 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:10:27,108 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-10-23 20:10:27,140 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6948f3dcb/8d8c6171ab354bbd9d2ccf4f2cc37f5d/FLAG0abc617a1 [2018-10-23 20:10:27,161 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6948f3dcb/8d8c6171ab354bbd9d2ccf4f2cc37f5d [2018-10-23 20:10:27,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:10:27,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:10:27,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:10:27,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:10:27,184 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:10:27,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:10:27" (1/1) ... [2018-10-23 20:10:27,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e1d6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:27, skipping insertion in model container [2018-10-23 20:10:27,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:10:27" (1/1) ... [2018-10-23 20:10:27,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:10:27,374 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:10:28,658 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:10:28,662 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:10:29,324 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:10:29,357 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:10:29,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29 WrapperNode [2018-10-23 20:10:29,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:10:29,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:10:29,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:10:29,360 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:10:29,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... [2018-10-23 20:10:29,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... [2018-10-23 20:10:30,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:10:30,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:10:30,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:10:30,044 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:10:30,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... [2018-10-23 20:10:30,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... [2018-10-23 20:10:30,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... [2018-10-23 20:10:30,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... [2018-10-23 20:10:30,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... [2018-10-23 20:10:30,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... [2018-10-23 20:10:30,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... [2018-10-23 20:10:30,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:10:30,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:10:30,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:10:30,338 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:10:30,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:10:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:10:30,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:10:30,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:10:38,990 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:10:38,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:10:38 BoogieIcfgContainer [2018-10-23 20:10:38,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:10:38,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:10:38,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:10:38,996 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:10:38,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:10:27" (1/3) ... [2018-10-23 20:10:38,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f94fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:10:38, skipping insertion in model container [2018-10-23 20:10:38,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:10:29" (2/3) ... [2018-10-23 20:10:38,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f94fecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:10:38, skipping insertion in model container [2018-10-23 20:10:38,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:10:38" (3/3) ... [2018-10-23 20:10:39,000 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27_true-unreach-call.c [2018-10-23 20:10:39,011 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:10:39,023 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:10:39,041 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:10:39,095 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:10:39,095 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:10:39,096 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:10:39,096 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:10:39,096 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:10:39,096 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:10:39,096 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:10:39,096 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:10:39,096 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:10:39,146 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 20:10:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-23 20:10:39,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:39,155 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:10:39,157 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:39,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:39,164 INFO L82 PathProgramCache]: Analyzing trace with hash 18549650, now seen corresponding path program 1 times [2018-10-23 20:10:39,165 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:39,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:39,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:39,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:39,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:39,624 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 20:10:39,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:39,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:10:39,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:10:39,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:10:39,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:39,653 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 20:10:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:10:53,939 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-10-23 20:10:53,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:10:53,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-10-23 20:10:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:10:53,987 INFO L225 Difference]: With dead ends: 3162 [2018-10-23 20:10:53,987 INFO L226 Difference]: Without dead ends: 2336 [2018-10-23 20:10:53,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:54,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-10-23 20:10:54,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1568. [2018-10-23 20:10:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2018-10-23 20:10:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2556 transitions. [2018-10-23 20:10:54,176 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2556 transitions. Word has length 32 [2018-10-23 20:10:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:10:54,177 INFO L481 AbstractCegarLoop]: Abstraction has 1568 states and 2556 transitions. [2018-10-23 20:10:54,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:10:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2556 transitions. [2018-10-23 20:10:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 20:10:54,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:10:54,183 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:54,185 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:10:54,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:10:54,186 INFO L82 PathProgramCache]: Analyzing trace with hash 347203639, now seen corresponding path program 1 times [2018-10-23 20:10:54,186 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:10:54,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:10:54,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:54,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:10:54,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:10:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:10:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:10:54,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:10:54,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:10:54,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:10:54,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:10:54,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:10:54,586 INFO L87 Difference]: Start difference. First operand 1568 states and 2556 transitions. Second operand 4 states. [2018-10-23 20:11:05,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:11:05,361 INFO L93 Difference]: Finished difference Result 6142 states and 10096 transitions. [2018-10-23 20:11:05,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:11:05,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-10-23 20:11:05,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:11:05,385 INFO L225 Difference]: With dead ends: 6142 [2018-10-23 20:11:05,385 INFO L226 Difference]: Without dead ends: 4576 [2018-10-23 20:11:05,389 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 20:11:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2018-10-23 20:11:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4576. [2018-10-23 20:11:05,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-10-23 20:11:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6531 transitions. [2018-10-23 20:11:05,478 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6531 transitions. Word has length 108 [2018-10-23 20:11:05,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:11:05,479 INFO L481 AbstractCegarLoop]: Abstraction has 4576 states and 6531 transitions. [2018-10-23 20:11:05,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:11:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6531 transitions. [2018-10-23 20:11:05,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-23 20:11:05,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:11:05,484 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:05,484 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:11:05,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:11:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash 633186002, now seen corresponding path program 1 times [2018-10-23 20:11:05,485 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:11:05,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:11:05,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:05,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:05,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:11:06,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:11:06,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:11:06,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:11:06,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:11:06,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:11:06,051 INFO L87 Difference]: Start difference. First operand 4576 states and 6531 transitions. Second operand 6 states. [2018-10-23 20:11:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:11:17,943 INFO L93 Difference]: Finished difference Result 15166 states and 21142 transitions. [2018-10-23 20:11:17,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:11:17,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-23 20:11:17,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:11:17,997 INFO L225 Difference]: With dead ends: 15166 [2018-10-23 20:11:17,998 INFO L226 Difference]: Without dead ends: 10592 [2018-10-23 20:11:18,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:11:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2018-10-23 20:11:18,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10592. [2018-10-23 20:11:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10592 states. [2018-10-23 20:11:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 14292 transitions. [2018-10-23 20:11:18,215 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 14292 transitions. Word has length 110 [2018-10-23 20:11:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:11:18,215 INFO L481 AbstractCegarLoop]: Abstraction has 10592 states and 14292 transitions. [2018-10-23 20:11:18,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:11:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 14292 transitions. [2018-10-23 20:11:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-23 20:11:18,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:11:18,227 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:11:18,232 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:11:18,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:11:18,232 INFO L82 PathProgramCache]: Analyzing trace with hash 443921409, now seen corresponding path program 1 times [2018-10-23 20:11:18,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:11:18,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:11:18,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:18,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:18,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:18,718 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-23 20:11:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 125 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:11:18,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:11:18,844 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 20:11:18,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:18,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:11:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:11:19,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:11:19,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:11:19,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:11:19,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:11:19,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:11:19,042 INFO L87 Difference]: Start difference. First operand 10592 states and 14292 transitions. Second operand 7 states. [2018-10-23 20:11:20,172 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-23 20:11:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:11:41,006 INFO L93 Difference]: Finished difference Result 41518 states and 54744 transitions. [2018-10-23 20:11:41,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 20:11:41,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2018-10-23 20:11:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:11:41,093 INFO L225 Difference]: With dead ends: 41518 [2018-10-23 20:11:41,093 INFO L226 Difference]: Without dead ends: 29421 [2018-10-23 20:11:41,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:11:41,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29421 states. [2018-10-23 20:11:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29421 to 20367. [2018-10-23 20:11:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20367 states. [2018-10-23 20:11:41,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20367 states to 20367 states and 25010 transitions. [2018-10-23 20:11:41,564 INFO L78 Accepts]: Start accepts. Automaton has 20367 states and 25010 transitions. Word has length 182 [2018-10-23 20:11:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:11:41,565 INFO L481 AbstractCegarLoop]: Abstraction has 20367 states and 25010 transitions. [2018-10-23 20:11:41,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:11:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 20367 states and 25010 transitions. [2018-10-23 20:11:41,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-23 20:11:41,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:11:41,569 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:11:41,570 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:11:41,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:11:41,570 INFO L82 PathProgramCache]: Analyzing trace with hash -454335340, now seen corresponding path program 1 times [2018-10-23 20:11:41,570 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:11:41,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:11:41,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:41,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:41,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-23 20:11:41,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:11:41,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:11:41,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:11:41,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:11:41,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:11:41,931 INFO L87 Difference]: Start difference. First operand 20367 states and 25010 transitions. Second operand 3 states. [2018-10-23 20:11:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:11:47,536 INFO L93 Difference]: Finished difference Result 46748 states and 57858 transitions. [2018-10-23 20:11:47,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:11:47,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2018-10-23 20:11:47,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:11:47,587 INFO L225 Difference]: With dead ends: 46748 [2018-10-23 20:11:47,588 INFO L226 Difference]: Without dead ends: 27135 [2018-10-23 20:11:47,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:11:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27135 states. [2018-10-23 20:11:47,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27135 to 27135. [2018-10-23 20:11:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27135 states. [2018-10-23 20:11:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27135 states to 27135 states and 32871 transitions. [2018-10-23 20:11:47,968 INFO L78 Accepts]: Start accepts. Automaton has 27135 states and 32871 transitions. Word has length 264 [2018-10-23 20:11:47,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:11:47,969 INFO L481 AbstractCegarLoop]: Abstraction has 27135 states and 32871 transitions. [2018-10-23 20:11:47,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:11:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 27135 states and 32871 transitions. [2018-10-23 20:11:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-23 20:11:47,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:11:47,976 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:47,977 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:11:47,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:11:47,977 INFO L82 PathProgramCache]: Analyzing trace with hash -410168344, now seen corresponding path program 1 times [2018-10-23 20:11:47,977 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:11:47,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:11:47,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:47,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:47,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-23 20:11:48,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:11:48,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:11:48,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:11:48,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:11:48,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:11:48,285 INFO L87 Difference]: Start difference. First operand 27135 states and 32871 transitions. Second operand 3 states. [2018-10-23 20:11:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:11:56,449 INFO L93 Difference]: Finished difference Result 53516 states and 64983 transitions. [2018-10-23 20:11:56,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:11:56,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2018-10-23 20:11:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:11:56,482 INFO L225 Difference]: With dead ends: 53516 [2018-10-23 20:11:56,483 INFO L226 Difference]: Without dead ends: 27135 [2018-10-23 20:11:56,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 20:11:56,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27135 states. [2018-10-23 20:11:56,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27135 to 25631. [2018-10-23 20:11:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25631 states. [2018-10-23 20:11:56,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25631 states to 25631 states and 29966 transitions. [2018-10-23 20:11:56,823 INFO L78 Accepts]: Start accepts. Automaton has 25631 states and 29966 transitions. Word has length 334 [2018-10-23 20:11:56,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:11:56,824 INFO L481 AbstractCegarLoop]: Abstraction has 25631 states and 29966 transitions. [2018-10-23 20:11:56,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:11:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand 25631 states and 29966 transitions. [2018-10-23 20:11:56,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-23 20:11:56,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:11:56,834 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 20:11:56,834 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:11:56,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:11:56,835 INFO L82 PathProgramCache]: Analyzing trace with hash -262376094, now seen corresponding path program 1 times [2018-10-23 20:11:56,835 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:11:56,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:11:56,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:56,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:11:56,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:11:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:11:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-23 20:11:57,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:11:57,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:11:57,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:11:57,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:11:57,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:11:57,694 INFO L87 Difference]: Start difference. First operand 25631 states and 29966 transitions. Second operand 4 states. [2018-10-23 20:12:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:12:05,075 INFO L93 Difference]: Finished difference Result 87356 states and 102501 transitions. [2018-10-23 20:12:05,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:12:05,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2018-10-23 20:12:05,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:12:05,166 INFO L225 Difference]: With dead ends: 87356 [2018-10-23 20:12:05,166 INFO L226 Difference]: Without dead ends: 59459 [2018-10-23 20:12:05,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:12:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59459 states. [2018-10-23 20:12:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59459 to 54947. [2018-10-23 20:12:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54947 states. [2018-10-23 20:12:05,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54947 states to 54947 states and 61557 transitions. [2018-10-23 20:12:05,854 INFO L78 Accepts]: Start accepts. Automaton has 54947 states and 61557 transitions. Word has length 362 [2018-10-23 20:12:05,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:12:05,855 INFO L481 AbstractCegarLoop]: Abstraction has 54947 states and 61557 transitions. [2018-10-23 20:12:05,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:12:05,855 INFO L276 IsEmpty]: Start isEmpty. Operand 54947 states and 61557 transitions. [2018-10-23 20:12:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-10-23 20:12:05,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:12:05,877 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:05,877 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:12:05,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:12:05,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1894606626, now seen corresponding path program 1 times [2018-10-23 20:12:05,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:12:05,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:12:05,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:05,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:12:05,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:12:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-23 20:12:06,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:12:06,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:12:06,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:12:06,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:12:06,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:12:06,655 INFO L87 Difference]: Start difference. First operand 54947 states and 61557 transitions. Second operand 4 states. [2018-10-23 20:12:12,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:12:12,977 INFO L93 Difference]: Finished difference Result 134708 states and 150803 transitions. [2018-10-23 20:12:12,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:12:12,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2018-10-23 20:12:12,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:12:13,097 INFO L225 Difference]: With dead ends: 134708 [2018-10-23 20:12:13,097 INFO L226 Difference]: Without dead ends: 80515 [2018-10-23 20:12:13,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:12:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80515 states. [2018-10-23 20:12:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80515 to 79011. [2018-10-23 20:12:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79011 states. [2018-10-23 20:12:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79011 states to 79011 states and 87860 transitions. [2018-10-23 20:12:14,019 INFO L78 Accepts]: Start accepts. Automaton has 79011 states and 87860 transitions. Word has length 466 [2018-10-23 20:12:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:12:14,020 INFO L481 AbstractCegarLoop]: Abstraction has 79011 states and 87860 transitions. [2018-10-23 20:12:14,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:12:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 79011 states and 87860 transitions. [2018-10-23 20:12:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-23 20:12:14,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:12:14,047 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:12:14,047 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:12:14,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:12:14,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1065961236, now seen corresponding path program 1 times [2018-10-23 20:12:14,048 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:12:14,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:12:14,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:14,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:12:14,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:12:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-23 20:12:14,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:12:14,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:12:14,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:12:14,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:12:14,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:12:14,900 INFO L87 Difference]: Start difference. First operand 79011 states and 87860 transitions. Second operand 5 states. [2018-10-23 20:12:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:12:27,431 INFO L93 Difference]: Finished difference Result 231000 states and 256955 transitions. [2018-10-23 20:12:27,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:12:27,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2018-10-23 20:12:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:12:27,597 INFO L225 Difference]: With dead ends: 231000 [2018-10-23 20:12:27,597 INFO L226 Difference]: Without dead ends: 152743 [2018-10-23 20:12:27,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:12:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152743 states. [2018-10-23 20:12:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152743 to 114391. [2018-10-23 20:12:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114391 states. [2018-10-23 20:12:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114391 states to 114391 states and 123457 transitions. [2018-10-23 20:12:29,408 INFO L78 Accepts]: Start accepts. Automaton has 114391 states and 123457 transitions. Word has length 470 [2018-10-23 20:12:29,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:12:29,409 INFO L481 AbstractCegarLoop]: Abstraction has 114391 states and 123457 transitions. [2018-10-23 20:12:29,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:12:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 114391 states and 123457 transitions. [2018-10-23 20:12:29,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2018-10-23 20:12:29,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:12:29,496 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:29,496 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:12:29,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:12:29,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1428436794, now seen corresponding path program 1 times [2018-10-23 20:12:29,497 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:12:29,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:12:29,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:29,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:12:29,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:12:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-23 20:12:30,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:12:30,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:12:30,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:12:30,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:12:30,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:12:30,943 INFO L87 Difference]: Start difference. First operand 114391 states and 123457 transitions. Second operand 4 states. [2018-10-23 20:12:39,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:12:39,236 INFO L93 Difference]: Finished difference Result 227276 states and 245332 transitions. [2018-10-23 20:12:39,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:12:39,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 990 [2018-10-23 20:12:39,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:12:39,347 INFO L225 Difference]: With dead ends: 227276 [2018-10-23 20:12:39,347 INFO L226 Difference]: Without dead ends: 92528 [2018-10-23 20:12:39,417 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 20:12:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92528 states. [2018-10-23 20:12:40,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92528 to 89520. [2018-10-23 20:12:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89520 states. [2018-10-23 20:12:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89520 states to 89520 states and 94426 transitions. [2018-10-23 20:12:40,236 INFO L78 Accepts]: Start accepts. Automaton has 89520 states and 94426 transitions. Word has length 990 [2018-10-23 20:12:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:12:40,238 INFO L481 AbstractCegarLoop]: Abstraction has 89520 states and 94426 transitions. [2018-10-23 20:12:40,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:12:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 89520 states and 94426 transitions. [2018-10-23 20:12:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2018-10-23 20:12:40,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:12:40,306 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:12:40,306 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:12:40,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:12:40,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1686038366, now seen corresponding path program 1 times [2018-10-23 20:12:40,307 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:12:40,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:12:40,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:40,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:12:40,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:12:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 656 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-23 20:12:41,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:12:41,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:12:41,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:12:41,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:12:41,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:12:41,502 INFO L87 Difference]: Start difference. First operand 89520 states and 94426 transitions. Second operand 3 states. [2018-10-23 20:12:48,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:12:48,958 INFO L93 Difference]: Finished difference Result 221902 states and 234786 transitions. [2018-10-23 20:12:48,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:12:48,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1019 [2018-10-23 20:12:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:12:49,109 INFO L225 Difference]: With dead ends: 221902 [2018-10-23 20:12:49,110 INFO L226 Difference]: Without dead ends: 132383 [2018-10-23 20:12:49,176 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 20:12:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132383 states. [2018-10-23 20:12:50,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132383 to 120351. [2018-10-23 20:12:50,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120351 states. [2018-10-23 20:12:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120351 states to 120351 states and 126128 transitions. [2018-10-23 20:12:50,728 INFO L78 Accepts]: Start accepts. Automaton has 120351 states and 126128 transitions. Word has length 1019 [2018-10-23 20:12:50,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:12:50,729 INFO L481 AbstractCegarLoop]: Abstraction has 120351 states and 126128 transitions. [2018-10-23 20:12:50,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:12:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 120351 states and 126128 transitions. [2018-10-23 20:12:50,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2018-10-23 20:12:50,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:12:50,810 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:12:50,810 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:12:50,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:12:50,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1518124272, now seen corresponding path program 1 times [2018-10-23 20:12:50,811 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:12:50,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:12:50,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:50,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:12:50,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:12:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:12:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-23 20:12:51,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:12:51,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:12:51,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:12:51,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:12:51,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:12:51,723 INFO L87 Difference]: Start difference. First operand 120351 states and 126128 transitions. Second operand 4 states. [2018-10-23 20:13:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:13:03,415 INFO L93 Difference]: Finished difference Result 269276 states and 281716 transitions. [2018-10-23 20:13:03,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:13:03,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1027 [2018-10-23 20:13:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:13:03,603 INFO L225 Difference]: With dead ends: 269276 [2018-10-23 20:13:03,603 INFO L226 Difference]: Without dead ends: 149679 [2018-10-23 20:13:03,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 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 20:13:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149679 states. [2018-10-23 20:13:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149679 to 138399. [2018-10-23 20:13:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138399 states. [2018-10-23 20:13:05,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138399 states to 138399 states and 144135 transitions. [2018-10-23 20:13:05,049 INFO L78 Accepts]: Start accepts. Automaton has 138399 states and 144135 transitions. Word has length 1027 [2018-10-23 20:13:05,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:13:05,050 INFO L481 AbstractCegarLoop]: Abstraction has 138399 states and 144135 transitions. [2018-10-23 20:13:05,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:13:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 138399 states and 144135 transitions. [2018-10-23 20:13:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2018-10-23 20:13:05,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:13:05,893 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:13:05,893 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:13:05,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:13:05,894 INFO L82 PathProgramCache]: Analyzing trace with hash 503842909, now seen corresponding path program 1 times [2018-10-23 20:13:05,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:13:05,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:13:05,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:13:05,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:13:05,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:13:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:13:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-23 20:13:08,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:13:08,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:13:08,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:13:08,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:13:08,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:13:08,111 INFO L87 Difference]: Start difference. First operand 138399 states and 144135 transitions. Second operand 4 states. [2018-10-23 20:13:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:13:15,416 INFO L93 Difference]: Finished difference Result 277548 states and 289023 transitions. [2018-10-23 20:13:15,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:13:15,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1073 [2018-10-23 20:13:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:13:15,573 INFO L225 Difference]: With dead ends: 277548 [2018-10-23 20:13:15,573 INFO L226 Difference]: Without dead ends: 139903 [2018-10-23 20:13:15,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:13:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139903 states. [2018-10-23 20:13:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139903 to 136143. [2018-10-23 20:13:17,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136143 states. [2018-10-23 20:13:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136143 states to 136143 states and 140405 transitions. [2018-10-23 20:13:17,575 INFO L78 Accepts]: Start accepts. Automaton has 136143 states and 140405 transitions. Word has length 1073 [2018-10-23 20:13:17,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:13:17,576 INFO L481 AbstractCegarLoop]: Abstraction has 136143 states and 140405 transitions. [2018-10-23 20:13:17,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:13:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 136143 states and 140405 transitions. [2018-10-23 20:13:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2018-10-23 20:13:17,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:13:17,648 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:17,648 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:13:17,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:13:17,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1300886854, now seen corresponding path program 1 times [2018-10-23 20:13:17,649 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:13:17,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:13:17,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:13:17,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:13:17,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:13:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:13:18,617 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-23 20:13:19,004 WARN L179 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2018-10-23 20:13:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 619 proven. 30 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-10-23 20:13:23,364 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:13:23,364 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 20:13:23,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:13:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:13:23,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:13:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 619 proven. 30 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2018-10-23 20:13:24,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:13:24,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4] total 13 [2018-10-23 20:13:24,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 20:13:24,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 20:13:24,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-10-23 20:13:24,864 INFO L87 Difference]: Start difference. First operand 136143 states and 140405 transitions. Second operand 13 states. [2018-10-23 20:14:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:14:17,327 INFO L93 Difference]: Finished difference Result 359071 states and 371181 transitions. [2018-10-23 20:14:17,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-23 20:14:17,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1157 [2018-10-23 20:14:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:14:17,329 INFO L225 Difference]: With dead ends: 359071 [2018-10-23 20:14:17,329 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 20:14:17,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1167 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=390, Invalid=942, Unknown=0, NotChecked=0, Total=1332 [2018-10-23 20:14:17,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 20:14:17,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 20:14:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 20:14:17,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 20:14:17,418 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1157 [2018-10-23 20:14:17,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:14:17,418 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 20:14:17,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 20:14:17,419 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 20:14:17,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 20:14:17,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 20:14:17,537 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:17,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:17,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:17,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:17,736 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,043 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,074 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,075 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,137 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,280 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,362 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,496 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,607 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,657 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,757 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:18,856 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:19,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:19,902 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,035 WARN L179 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 708 DAG size of output: 444 [2018-10-23 20:14:20,090 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,265 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,496 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,515 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,516 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,517 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,561 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,612 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,660 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,836 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:20,949 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:21,030 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:21,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:21,059 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:21,125 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:21,703 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:21,733 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:21,847 WARN L179 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 706 DAG size of output: 443 [2018-10-23 20:14:21,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:21,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:21,943 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,074 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,322 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,324 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,325 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,327 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,400 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,445 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,468 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-23 20:14:22,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-10-23 20:14:22,563 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-23 20:14:22,565 INFO L168 Benchmark]: Toolchain (without parser) took 235389.20 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-23 20:14:22,566 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:14:22,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2180.08 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:14:22,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 683.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -984.6 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:14:22,570 INFO L168 Benchmark]: Boogie Preprocessor took 293.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:14:22,571 INFO L168 Benchmark]: RCFGBuilder took 8653.32 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 233.3 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -187.2 MB). Peak memory consumption was 652.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:14:22,573 INFO L168 Benchmark]: TraceAbstraction took 223572.02 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 889.7 MB). Free memory was 2.3 GB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-23 20:14:22,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2180.08 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 683.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -984.6 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 293.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8653.32 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 233.3 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -187.2 MB). Peak memory consumption was 652.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223572.02 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 889.7 MB). Free memory was 2.3 GB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 676. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown