java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:43:28,906 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:43:28,908 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:43:28,923 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:43:28,923 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:43:28,924 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:43:28,925 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:43:28,927 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:43:28,929 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:43:28,930 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:43:28,931 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:43:28,931 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:43:28,932 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:43:28,933 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:43:28,934 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:43:28,935 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:43:28,936 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:43:28,937 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:43:28,939 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:43:28,941 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:43:28,942 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:43:28,943 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:43:28,946 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 19:43:28,954 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:43:28,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:43:28,983 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:43:28,984 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:43:28,984 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:43:28,985 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:43:28,985 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:43:28,985 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:43:28,985 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:43:28,986 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:43:28,986 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:43:28,986 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:43:28,986 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:43:28,986 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:43:28,987 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:43:28,987 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:43:28,987 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:43:28,987 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:43:28,987 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:43:28,988 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:43:28,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:43:28,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:43:28,988 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:43:28,988 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:43:28,989 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:43:28,989 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:43:28,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:43:28,989 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:43:28,989 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:43:29,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:43:29,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:43:29,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:43:29,054 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:43:29,055 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:43:29,055 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35_false-unreach-call.c [2018-10-26 19:43:29,118 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2d5928b4/58896b763a334b7eaf920815728f4035/FLAGc5bafe8ec [2018-10-26 19:43:29,840 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:43:29,841 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label35_false-unreach-call.c [2018-10-26 19:43:29,870 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2d5928b4/58896b763a334b7eaf920815728f4035/FLAGc5bafe8ec [2018-10-26 19:43:29,893 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2d5928b4/58896b763a334b7eaf920815728f4035 [2018-10-26 19:43:29,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:43:29,907 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:43:29,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:43:29,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:43:29,913 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:43:29,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:43:29" (1/1) ... [2018-10-26 19:43:29,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6490d244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:29, skipping insertion in model container [2018-10-26 19:43:29,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:43:29" (1/1) ... [2018-10-26 19:43:29,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:43:30,064 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:43:31,082 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:43:31,087 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:43:31,512 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:43:31,544 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:43:31,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31 WrapperNode [2018-10-26 19:43:31,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:43:31,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:43:31,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:43:31,547 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:43:31,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... [2018-10-26 19:43:31,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... [2018-10-26 19:43:32,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:43:32,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:43:32,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:43:32,037 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:43:32,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... [2018-10-26 19:43:32,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... [2018-10-26 19:43:32,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... [2018-10-26 19:43:32,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... [2018-10-26 19:43:32,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... [2018-10-26 19:43:32,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... [2018-10-26 19:43:32,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... [2018-10-26 19:43:32,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:43:32,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:43:32,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:43:32,238 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:43:32,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:43:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:43:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:43:32,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:43:39,966 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:43:39,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:43:39 BoogieIcfgContainer [2018-10-26 19:43:39,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:43:39,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:43:39,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:43:39,972 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:43:39,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:43:29" (1/3) ... [2018-10-26 19:43:39,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e99a9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:43:39, skipping insertion in model container [2018-10-26 19:43:39,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:43:31" (2/3) ... [2018-10-26 19:43:39,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e99a9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:43:39, skipping insertion in model container [2018-10-26 19:43:39,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:43:39" (3/3) ... [2018-10-26 19:43:39,976 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label35_false-unreach-call.c [2018-10-26 19:43:39,986 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:43:39,996 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:43:40,014 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:43:40,059 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:43:40,060 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:43:40,060 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:43:40,060 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:43:40,061 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:43:40,061 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:43:40,061 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:43:40,061 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:43:40,061 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:43:40,095 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-26 19:43:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 19:43:40,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:40,113 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:43:40,116 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:40,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:40,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1961166346, now seen corresponding path program 1 times [2018-10-26 19:43:40,125 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:40,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:40,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:40,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:40,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:43:40,432 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:43:40,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:43:40,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:43:40,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:43:40,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:40,451 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-26 19:43:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:43:53,214 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-10-26 19:43:53,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:43:53,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-26 19:43:53,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:43:53,260 INFO L225 Difference]: With dead ends: 2918 [2018-10-26 19:43:53,261 INFO L226 Difference]: Without dead ends: 2153 [2018-10-26 19:43:53,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-10-26 19:43:53,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-10-26 19:43:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-10-26 19:43:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3619 transitions. [2018-10-26 19:43:53,434 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3619 transitions. Word has length 15 [2018-10-26 19:43:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:43:53,435 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 3619 transitions. [2018-10-26 19:43:53,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:43:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3619 transitions. [2018-10-26 19:43:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-26 19:43:53,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:43:53,442 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:43:53,442 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:43:53,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:43:53,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1821587577, now seen corresponding path program 1 times [2018-10-26 19:43:53,443 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:43:53,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:43:53,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:53,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:43:53,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:43:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:43:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:43:53,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:43:53,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:43:53,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:43:53,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:43:53,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:43:53,789 INFO L87 Difference]: Start difference. First operand 2153 states and 3619 transitions. Second operand 4 states. [2018-10-26 19:44:01,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:01,553 INFO L93 Difference]: Finished difference Result 6377 states and 10776 transitions. [2018-10-26 19:44:01,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:44:01,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2018-10-26 19:44:01,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:01,577 INFO L225 Difference]: With dead ends: 6377 [2018-10-26 19:44:01,578 INFO L226 Difference]: Without dead ends: 4226 [2018-10-26 19:44:01,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:44:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-10-26 19:44:01,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-10-26 19:44:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-10-26 19:44:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 6043 transitions. [2018-10-26 19:44:01,665 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 6043 transitions. Word has length 81 [2018-10-26 19:44:01,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:44:01,666 INFO L481 AbstractCegarLoop]: Abstraction has 4226 states and 6043 transitions. [2018-10-26 19:44:01,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:44:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 6043 transitions. [2018-10-26 19:44:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-26 19:44:01,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:01,674 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:44:01,674 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:01,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash 60232242, now seen corresponding path program 1 times [2018-10-26 19:44:01,675 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:01,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:01,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:01,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:01,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-26 19:44:02,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:44:02,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:44:02,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:44:02,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:44:02,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:44:02,485 INFO L87 Difference]: Start difference. First operand 4226 states and 6043 transitions. Second operand 5 states. [2018-10-26 19:44:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:10,818 INFO L93 Difference]: Finished difference Result 13287 states and 18113 transitions. [2018-10-26 19:44:10,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:44:10,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2018-10-26 19:44:10,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:10,862 INFO L225 Difference]: With dead ends: 13287 [2018-10-26 19:44:10,863 INFO L226 Difference]: Without dead ends: 9063 [2018-10-26 19:44:10,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:44:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9063 states. [2018-10-26 19:44:11,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9063 to 8372. [2018-10-26 19:44:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8372 states. [2018-10-26 19:44:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 10467 transitions. [2018-10-26 19:44:11,031 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 10467 transitions. Word has length 200 [2018-10-26 19:44:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:44:11,032 INFO L481 AbstractCegarLoop]: Abstraction has 8372 states and 10467 transitions. [2018-10-26 19:44:11,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:44:11,146 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 10467 transitions. [2018-10-26 19:44:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2018-10-26 19:44:11,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:11,162 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:44:11,162 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:11,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:11,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1590270905, now seen corresponding path program 1 times [2018-10-26 19:44:11,166 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:11,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:11,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:11,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:11,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 256 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-26 19:44:11,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:44:11,783 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:44:11,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:11,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:44:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-26 19:44:12,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:44:12,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:44:12,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:44:12,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:44:12,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:44:12,138 INFO L87 Difference]: Start difference. First operand 8372 states and 10467 transitions. Second operand 6 states. [2018-10-26 19:44:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:23,168 INFO L93 Difference]: Finished difference Result 26432 states and 32780 transitions. [2018-10-26 19:44:23,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:44:23,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 383 [2018-10-26 19:44:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:23,238 INFO L225 Difference]: With dead ends: 26432 [2018-10-26 19:44:23,238 INFO L226 Difference]: Without dead ends: 15986 [2018-10-26 19:44:23,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 383 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:44:23,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15986 states. [2018-10-26 19:44:23,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15986 to 11810. [2018-10-26 19:44:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11810 states. [2018-10-26 19:44:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 13599 transitions. [2018-10-26 19:44:23,480 INFO L78 Accepts]: Start accepts. Automaton has 11810 states and 13599 transitions. Word has length 383 [2018-10-26 19:44:23,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:44:23,481 INFO L481 AbstractCegarLoop]: Abstraction has 11810 states and 13599 transitions. [2018-10-26 19:44:23,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:44:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 11810 states and 13599 transitions. [2018-10-26 19:44:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-10-26 19:44:23,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:23,491 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:44:23,491 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:23,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:23,491 INFO L82 PathProgramCache]: Analyzing trace with hash -363516937, now seen corresponding path program 1 times [2018-10-26 19:44:23,492 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:23,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:23,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:23,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:23,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-26 19:44:24,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:44:24,597 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:44:24,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:24,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:44:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-26 19:44:24,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:44:24,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 19:44:24,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:44:24,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:44:24,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:44:24,962 INFO L87 Difference]: Start difference. First operand 11810 states and 13599 transitions. Second operand 5 states. [2018-10-26 19:44:36,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:36,902 INFO L93 Difference]: Finished difference Result 47806 states and 56547 transitions. [2018-10-26 19:44:36,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 19:44:36,904 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 388 [2018-10-26 19:44:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:36,963 INFO L225 Difference]: With dead ends: 47806 [2018-10-26 19:44:36,963 INFO L226 Difference]: Without dead ends: 35998 [2018-10-26 19:44:36,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:44:37,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35998 states. [2018-10-26 19:44:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35998 to 35998. [2018-10-26 19:44:37,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35998 states. [2018-10-26 19:44:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35998 states to 35998 states and 41551 transitions. [2018-10-26 19:44:37,507 INFO L78 Accepts]: Start accepts. Automaton has 35998 states and 41551 transitions. Word has length 388 [2018-10-26 19:44:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:44:37,507 INFO L481 AbstractCegarLoop]: Abstraction has 35998 states and 41551 transitions. [2018-10-26 19:44:37,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:44:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 35998 states and 41551 transitions. [2018-10-26 19:44:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2018-10-26 19:44:37,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:37,545 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:44:37,545 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:37,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:37,546 INFO L82 PathProgramCache]: Analyzing trace with hash 141044868, now seen corresponding path program 1 times [2018-10-26 19:44:37,546 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:37,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:37,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:37,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:37,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-10-26 19:44:39,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:44:39,443 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:44:39,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:39,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:44:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2018-10-26 19:44:40,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:44:40,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 19:44:40,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:44:40,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:44:40,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:44:40,593 INFO L87 Difference]: Start difference. First operand 35998 states and 41551 transitions. Second operand 5 states. [2018-10-26 19:44:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:46,078 INFO L93 Difference]: Finished difference Result 85123 states and 98829 transitions. [2018-10-26 19:44:46,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:44:46,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1009 [2018-10-26 19:44:46,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:46,164 INFO L225 Difference]: With dead ends: 85123 [2018-10-26 19:44:46,164 INFO L226 Difference]: Without dead ends: 49818 [2018-10-26 19:44:46,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1011 GetRequests, 1008 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:44:46,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49818 states. [2018-10-26 19:44:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49818 to 49818. [2018-10-26 19:44:46,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49818 states. [2018-10-26 19:44:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49818 states to 49818 states and 55582 transitions. [2018-10-26 19:44:46,798 INFO L78 Accepts]: Start accepts. Automaton has 49818 states and 55582 transitions. Word has length 1009 [2018-10-26 19:44:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:44:46,800 INFO L481 AbstractCegarLoop]: Abstraction has 49818 states and 55582 transitions. [2018-10-26 19:44:46,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:44:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 49818 states and 55582 transitions. [2018-10-26 19:44:46,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2018-10-26 19:44:46,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:46,849 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:44:46,849 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:46,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:46,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1721176543, now seen corresponding path program 1 times [2018-10-26 19:44:46,850 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:46,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:46,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:46,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:46,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-10-26 19:44:48,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:44:48,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:44:48,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:44:48,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:44:48,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:44:48,287 INFO L87 Difference]: Start difference. First operand 49818 states and 55582 transitions. Second operand 3 states. [2018-10-26 19:44:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:44:51,868 INFO L93 Difference]: Finished difference Result 98943 states and 110470 transitions. [2018-10-26 19:44:51,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:44:51,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1023 [2018-10-26 19:44:51,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:44:51,932 INFO L225 Difference]: With dead ends: 98943 [2018-10-26 19:44:51,932 INFO L226 Difference]: Without dead ends: 49818 [2018-10-26 19:44:51,963 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 [2018-10-26 19:44:51,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49818 states. [2018-10-26 19:44:52,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49818 to 49818. [2018-10-26 19:44:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49818 states. [2018-10-26 19:44:52,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49818 states to 49818 states and 54152 transitions. [2018-10-26 19:44:52,445 INFO L78 Accepts]: Start accepts. Automaton has 49818 states and 54152 transitions. Word has length 1023 [2018-10-26 19:44:52,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:44:52,446 INFO L481 AbstractCegarLoop]: Abstraction has 49818 states and 54152 transitions. [2018-10-26 19:44:52,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:44:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 49818 states and 54152 transitions. [2018-10-26 19:44:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1196 [2018-10-26 19:44:52,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:44:52,475 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:44:52,475 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:44:52,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:44:52,476 INFO L82 PathProgramCache]: Analyzing trace with hash 2056092631, now seen corresponding path program 1 times [2018-10-26 19:44:52,476 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:44:52,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:44:52,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:52,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:44:52,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:44:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:44:53,213 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-26 19:44:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 862 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2018-10-26 19:44:54,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:44:54,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:44:54,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:44:54,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:44:54,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:44:54,035 INFO L87 Difference]: Start difference. First operand 49818 states and 54152 transitions. Second operand 4 states. [2018-10-26 19:45:00,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:00,976 INFO L93 Difference]: Finished difference Result 130729 states and 142007 transitions. [2018-10-26 19:45:00,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:45:00,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1195 [2018-10-26 19:45:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:01,057 INFO L225 Difference]: With dead ends: 130729 [2018-10-26 19:45:01,057 INFO L226 Difference]: Without dead ends: 81604 [2018-10-26 19:45:01,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:01,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81604 states. [2018-10-26 19:45:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81604 to 78840. [2018-10-26 19:45:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78840 states. [2018-10-26 19:45:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78840 states to 78840 states and 84682 transitions. [2018-10-26 19:45:02,114 INFO L78 Accepts]: Start accepts. Automaton has 78840 states and 84682 transitions. Word has length 1195 [2018-10-26 19:45:02,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:02,116 INFO L481 AbstractCegarLoop]: Abstraction has 78840 states and 84682 transitions. [2018-10-26 19:45:02,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:02,116 INFO L276 IsEmpty]: Start isEmpty. Operand 78840 states and 84682 transitions. [2018-10-26 19:45:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2018-10-26 19:45:02,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:02,154 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:02,154 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:02,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:02,155 INFO L82 PathProgramCache]: Analyzing trace with hash 560112346, now seen corresponding path program 1 times [2018-10-26 19:45:02,155 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:02,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:02,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:02,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:02,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:02,929 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-26 19:45:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 948 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2018-10-26 19:45:03,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:03,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:45:03,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:45:03,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:45:03,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:03,370 INFO L87 Difference]: Start difference. First operand 78840 states and 84682 transitions. Second operand 4 states. [2018-10-26 19:45:08,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:08,766 INFO L93 Difference]: Finished difference Result 158368 states and 170085 transitions. [2018-10-26 19:45:08,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:45:08,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1214 [2018-10-26 19:45:08,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:08,854 INFO L225 Difference]: With dead ends: 158368 [2018-10-26 19:45:08,854 INFO L226 Difference]: Without dead ends: 80221 [2018-10-26 19:45:08,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80221 states. [2018-10-26 19:45:09,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80221 to 79530. [2018-10-26 19:45:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79530 states. [2018-10-26 19:45:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79530 states to 79530 states and 84109 transitions. [2018-10-26 19:45:09,522 INFO L78 Accepts]: Start accepts. Automaton has 79530 states and 84109 transitions. Word has length 1214 [2018-10-26 19:45:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:09,523 INFO L481 AbstractCegarLoop]: Abstraction has 79530 states and 84109 transitions. [2018-10-26 19:45:09,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:09,523 INFO L276 IsEmpty]: Start isEmpty. Operand 79530 states and 84109 transitions. [2018-10-26 19:45:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2018-10-26 19:45:09,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:09,550 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:09,550 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:09,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:09,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2133527744, now seen corresponding path program 1 times [2018-10-26 19:45:09,551 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:09,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:09,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:09,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:09,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:10,416 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 19:45:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 447 proven. 678 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-10-26 19:45:12,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:45:12,872 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:45:12,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:13,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:45:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2018-10-26 19:45:13,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:45:13,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-26 19:45:13,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 19:45:13,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 19:45:13,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-26 19:45:13,943 INFO L87 Difference]: Start difference. First operand 79530 states and 84109 transitions. Second operand 10 states. [2018-10-26 19:45:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:38,073 INFO L93 Difference]: Finished difference Result 309776 states and 329297 transitions. [2018-10-26 19:45:38,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-26 19:45:38,074 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1214 [2018-10-26 19:45:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:38,274 INFO L225 Difference]: With dead ends: 309776 [2018-10-26 19:45:38,275 INFO L226 Difference]: Without dead ends: 187935 [2018-10-26 19:45:38,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1226 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-10-26 19:45:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187935 states. [2018-10-26 19:45:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187935 to 78109. [2018-10-26 19:45:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78109 states. [2018-10-26 19:45:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78109 states to 78109 states and 80857 transitions. [2018-10-26 19:45:39,600 INFO L78 Accepts]: Start accepts. Automaton has 78109 states and 80857 transitions. Word has length 1214 [2018-10-26 19:45:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:39,601 INFO L481 AbstractCegarLoop]: Abstraction has 78109 states and 80857 transitions. [2018-10-26 19:45:39,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 19:45:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 78109 states and 80857 transitions. [2018-10-26 19:45:39,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1477 [2018-10-26 19:45:39,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:39,642 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:39,642 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:39,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:39,643 INFO L82 PathProgramCache]: Analyzing trace with hash 579603313, now seen corresponding path program 1 times [2018-10-26 19:45:39,643 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:39,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:39,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:39,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:39,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:40,535 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-26 19:45:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2036 backedges. 1348 proven. 0 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-10-26 19:45:41,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:41,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:45:41,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:45:41,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:45:41,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:41,965 INFO L87 Difference]: Start difference. First operand 78109 states and 80857 transitions. Second operand 4 states. [2018-10-26 19:45:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:46,722 INFO L93 Difference]: Finished difference Result 165888 states and 172052 transitions. [2018-10-26 19:45:46,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:45:46,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1476 [2018-10-26 19:45:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:46,809 INFO L225 Difference]: With dead ends: 165888 [2018-10-26 19:45:46,809 INFO L226 Difference]: Without dead ends: 88472 [2018-10-26 19:45:46,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:45:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88472 states. [2018-10-26 19:45:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88472 to 87781. [2018-10-26 19:45:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87781 states. [2018-10-26 19:45:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87781 states to 87781 states and 90700 transitions. [2018-10-26 19:45:47,566 INFO L78 Accepts]: Start accepts. Automaton has 87781 states and 90700 transitions. Word has length 1476 [2018-10-26 19:45:47,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:47,567 INFO L481 AbstractCegarLoop]: Abstraction has 87781 states and 90700 transitions. [2018-10-26 19:45:47,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:45:47,567 INFO L276 IsEmpty]: Start isEmpty. Operand 87781 states and 90700 transitions. [2018-10-26 19:45:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1576 [2018-10-26 19:45:47,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:47,604 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:47,604 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:47,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:47,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1856553544, now seen corresponding path program 1 times [2018-10-26 19:45:47,605 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:47,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:47,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:47,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:47,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:45:48,694 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-26 19:45:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 1781 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2018-10-26 19:45:50,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:45:50,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 19:45:50,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:45:50,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:45:50,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:45:50,348 INFO L87 Difference]: Start difference. First operand 87781 states and 90700 transitions. Second operand 6 states. [2018-10-26 19:45:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:45:58,832 INFO L93 Difference]: Finished difference Result 185384 states and 191356 transitions. [2018-10-26 19:45:58,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:45:58,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1575 [2018-10-26 19:45:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:45:58,934 INFO L225 Difference]: With dead ends: 185384 [2018-10-26 19:45:58,935 INFO L226 Difference]: Without dead ends: 98296 [2018-10-26 19:45:58,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:45:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98296 states. [2018-10-26 19:45:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98296 to 88890. [2018-10-26 19:45:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88890 states. [2018-10-26 19:45:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88890 states to 88890 states and 91669 transitions. [2018-10-26 19:45:59,669 INFO L78 Accepts]: Start accepts. Automaton has 88890 states and 91669 transitions. Word has length 1575 [2018-10-26 19:45:59,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:45:59,670 INFO L481 AbstractCegarLoop]: Abstraction has 88890 states and 91669 transitions. [2018-10-26 19:45:59,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:45:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 88890 states and 91669 transitions. [2018-10-26 19:45:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1609 [2018-10-26 19:45:59,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:45:59,710 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:45:59,711 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:45:59,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:45:59,712 INFO L82 PathProgramCache]: Analyzing trace with hash -627640212, now seen corresponding path program 1 times [2018-10-26 19:45:59,712 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:45:59,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:45:59,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:59,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:45:59,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:45:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 2459 trivial. 0 not checked. [2018-10-26 19:46:02,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:46:02,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:46:02,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:46:02,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:46:02,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:02,160 INFO L87 Difference]: Start difference. First operand 88890 states and 91669 transitions. Second operand 4 states. [2018-10-26 19:46:06,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:06,961 INFO L93 Difference]: Finished difference Result 176393 states and 181950 transitions. [2018-10-26 19:46:06,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:46:06,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1608 [2018-10-26 19:46:06,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:07,048 INFO L225 Difference]: With dead ends: 176393 [2018-10-26 19:46:07,048 INFO L226 Difference]: Without dead ends: 86121 [2018-10-26 19:46:07,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86121 states. [2018-10-26 19:46:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86121 to 85430. [2018-10-26 19:46:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85430 states. [2018-10-26 19:46:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85430 states to 85430 states and 87793 transitions. [2018-10-26 19:46:07,765 INFO L78 Accepts]: Start accepts. Automaton has 85430 states and 87793 transitions. Word has length 1608 [2018-10-26 19:46:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:07,942 INFO L481 AbstractCegarLoop]: Abstraction has 85430 states and 87793 transitions. [2018-10-26 19:46:07,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:46:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 85430 states and 87793 transitions. [2018-10-26 19:46:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2018-10-26 19:46:07,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:07,990 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:07,990 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:07,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:07,991 INFO L82 PathProgramCache]: Analyzing trace with hash -604763930, now seen corresponding path program 1 times [2018-10-26 19:46:07,991 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:07,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:07,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:07,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:07,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2557 backedges. 1966 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-26 19:46:10,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:46:10,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:46:10,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:46:10,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:46:10,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:10,608 INFO L87 Difference]: Start difference. First operand 85430 states and 87793 transitions. Second operand 4 states. [2018-10-26 19:46:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:14,697 INFO L93 Difference]: Finished difference Result 180673 states and 185697 transitions. [2018-10-26 19:46:14,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:46:14,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1635 [2018-10-26 19:46:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:14,780 INFO L225 Difference]: With dead ends: 180673 [2018-10-26 19:46:14,780 INFO L226 Difference]: Without dead ends: 95936 [2018-10-26 19:46:14,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:14,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95936 states. [2018-10-26 19:46:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95936 to 92481. [2018-10-26 19:46:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92481 states. [2018-10-26 19:46:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92481 states to 92481 states and 94894 transitions. [2018-10-26 19:46:15,586 INFO L78 Accepts]: Start accepts. Automaton has 92481 states and 94894 transitions. Word has length 1635 [2018-10-26 19:46:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:15,587 INFO L481 AbstractCegarLoop]: Abstraction has 92481 states and 94894 transitions. [2018-10-26 19:46:15,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:46:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 92481 states and 94894 transitions. [2018-10-26 19:46:15,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1762 [2018-10-26 19:46:15,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:15,631 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:15,631 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:15,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:15,632 INFO L82 PathProgramCache]: Analyzing trace with hash 710325529, now seen corresponding path program 1 times [2018-10-26 19:46:15,632 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:15,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:15,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:15,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:15,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2914 backedges. 2306 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2018-10-26 19:46:18,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:46:18,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:46:18,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:46:18,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:46:18,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:18,125 INFO L87 Difference]: Start difference. First operand 92481 states and 94894 transitions. Second operand 4 states. [2018-10-26 19:46:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:23,388 INFO L93 Difference]: Finished difference Result 211216 states and 217012 transitions. [2018-10-26 19:46:23,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:46:23,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1761 [2018-10-26 19:46:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:23,505 INFO L225 Difference]: With dead ends: 211216 [2018-10-26 19:46:23,505 INFO L226 Difference]: Without dead ends: 119428 [2018-10-26 19:46:23,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:46:23,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119428 states. [2018-10-26 19:46:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119428 to 98006. [2018-10-26 19:46:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98006 states. [2018-10-26 19:46:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98006 states to 98006 states and 100417 transitions. [2018-10-26 19:46:24,416 INFO L78 Accepts]: Start accepts. Automaton has 98006 states and 100417 transitions. Word has length 1761 [2018-10-26 19:46:24,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:46:24,417 INFO L481 AbstractCegarLoop]: Abstraction has 98006 states and 100417 transitions. [2018-10-26 19:46:24,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:46:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 98006 states and 100417 transitions. [2018-10-26 19:46:24,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1797 [2018-10-26 19:46:24,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:46:24,466 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:46:24,466 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:46:24,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:46:24,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2099010267, now seen corresponding path program 1 times [2018-10-26 19:46:24,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:46:24,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:46:24,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:24,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:24,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:46:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:25,563 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:46:25,846 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-26 19:46:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 2615 proven. 108 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-10-26 19:46:27,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:46:27,571 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:46:27,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:46:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:46:27,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:46:32,130 WARN L179 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 1877 DAG size of output: 26 [2018-10-26 19:46:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 2413 proven. 93 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2018-10-26 19:46:34,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:46:34,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-26 19:46:34,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:46:34,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:46:34,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:46:34,637 INFO L87 Difference]: Start difference. First operand 98006 states and 100417 transitions. Second operand 7 states. [2018-10-26 19:46:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:46:59,732 INFO L93 Difference]: Finished difference Result 208944 states and 214249 transitions. [2018-10-26 19:46:59,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 19:46:59,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1796 [2018-10-26 19:46:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:46:59,843 INFO L225 Difference]: With dead ends: 208944 [2018-10-26 19:46:59,843 INFO L226 Difference]: Without dead ends: 111631 [2018-10-26 19:46:59,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1804 GetRequests, 1797 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-26 19:46:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111631 states. [2018-10-26 19:47:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111631 to 106528. [2018-10-26 19:47:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106528 states. [2018-10-26 19:47:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106528 states to 106528 states and 108736 transitions. [2018-10-26 19:47:00,759 INFO L78 Accepts]: Start accepts. Automaton has 106528 states and 108736 transitions. Word has length 1796 [2018-10-26 19:47:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:47:00,760 INFO L481 AbstractCegarLoop]: Abstraction has 106528 states and 108736 transitions. [2018-10-26 19:47:00,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:47:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 106528 states and 108736 transitions. [2018-10-26 19:47:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1826 [2018-10-26 19:47:00,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:47:00,802 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:47:00,803 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:47:00,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:47:00,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1391706655, now seen corresponding path program 1 times [2018-10-26 19:47:00,803 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:47:00,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:47:00,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:00,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:00,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:47:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3405 backedges. 2639 proven. 69 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-10-26 19:47:03,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:47:03,577 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:47:03,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:47:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:47:03,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:47:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3405 backedges. 1730 proven. 93 refuted. 0 times theorem prover too weak. 1582 trivial. 0 not checked. [2018-10-26 19:47:09,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 19:47:09,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-26 19:47:09,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:47:09,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:47:09,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:47:09,414 INFO L87 Difference]: Start difference. First operand 106528 states and 108736 transitions. Second operand 7 states. Received shutdown request... [2018-10-26 19:47:16,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:47:16,620 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:47:16,626 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:47:16,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:47:16 BoogieIcfgContainer [2018-10-26 19:47:16,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:47:16,627 INFO L168 Benchmark]: Toolchain (without parser) took 226721.40 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 38.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-26 19:47:16,629 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:47:16,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1637.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:47:16,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 489.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -934.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-26 19:47:16,631 INFO L168 Benchmark]: Boogie Preprocessor took 200.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:47:16,632 INFO L168 Benchmark]: RCFGBuilder took 7729.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 532.9 MB). Peak memory consumption was 532.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:47:16,632 INFO L168 Benchmark]: TraceAbstraction took 216658.59 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 1.4 GB in the end (delta: 263.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-26 19:47:16,639 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1637.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 489.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -934.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 200.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7729.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 532.9 MB). Peak memory consumption was 532.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216658.59 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 1.4 GB in the end (delta: 263.5 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was constructing difference of abstraction (106528states) and FLOYD_HOARE automaton (currently 6 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (6605 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 216.5s OverallTime, 17 OverallIterations, 8 TraceHistogramMax, 158.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10210 SDtfs, 41972 SDslu, 1994 SDs, 0 SdLazy, 95154 SolverSat, 14082 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 127.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6733 GetRequests, 6648 SyntacticMatches, 14 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106528occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 158916 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 26.9s InterpolantComputationTime, 25013 NumberOfCodeBlocks, 25013 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 24990 ConstructedInterpolants, 582 QuantifiedInterpolants, 91649491 SizeOfPredicates, 1 NumberOfNonLiveVariables, 7626 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 23 InterpolantComputations, 15 PerfectInterpolantSequences, 33895/34954 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown